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Crypton - exposing malware's deepest secrets
 
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This presentation by Julia Karpin and Anna Dorfman (F5 Networks) was delivered at VB2017 in Madrid, Spain. A significant part of the malware research process is dedicated to reversing cryptographic algorithms in order to extract the decrypted content. Revealing this content provides access to the heart of the malware: all the strings, Windows API calls, DGA algorithms, communication protocols, and when focusing on financial malware, the list of targeted institutions and webinjects. Malware authors know that we're after this data, which is why they put considerable effort into constantly changing their encryption routines and designing customized implementation algorithms. Even the smallest change requires significant work on the part of the malware researcher: reversing has to be applied to reconstruct the encryption scheme. Over the years, numerous plug-ins and tools have been developed to solve this problem. Some have been highly academic endeavours that relied on complicated algorithms to identify cryptography, but which were not adapted for real-world usage; others relied on signature checks to locate specific algorithms. We wanted to find a lightweight and practical implementation that would effectively speed up the research process. That’s why we developed an automated approach, based on a heuristic way of detecting such cryptographic algorithms regardless of the type of algorithm used, that extracts their plain text output. The implementation of this approach saves a lot of valuable research time. Our implementation, "Crypton", works by unpacking the malware, then following injected code and memory allocations in order to identify blocks of cryptographic code, and inspecting the allocations for decrypted data. Our tool will follow all the processes created and injected by the malware as the decryption may happen in any one of them - therefore we must follow any execution flow. We plan to give some insights into our work with the latest financial malware, their internals and their usage of cryptographic algorithms, compression routines and pseudo random generators. We will describe the idea and the architecture of the Crypton tool and present a demo with live malware and our complementary IDA-python script that identifies all crypto blocks inside a memory dump. https://www.virusbulletin.com/conference/vb2017/abstracts/crypton-exposing-malwares-deepest-secrets
Views: 550 Virus Bulletin
How do I remove CryptoWall virus and get my files back without pay for CryptoWall decrypter
 
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(CryptoWall removal guide) What is CryptoWall? How to decrypt encrypted files? CryptoWall is a new variant of the ransomware CryptoLocker virus. Crypto Wall is for the most part the same as CryptoDefense, CryptorBit and Cryptolocker other than the name change and different filenames for the ransom instructions. When Crypto Wall is installed it will scan your computer for data files and encrypt them. When CryptoWall is installed it will scan your computer for data files and encrypt them. It will then create files containing ransom instructions in every folder that it had encrypted a file. These ransom notes are DECRYPT_INSTRUCTION.HTML, DECRYPT_INSTRUCTION.TXT, and the DECRYPT_INSTRUCTION URL shortcut to the decryption service. DECRYPT_INSTRUCTION: What happened to your files ? All of your files were protected by a strong encryption with RSA-2048 using CryptoWall. More information about the encryption keys using RSA-2048 can be found here: http://en.wikipedia.org/wiki/RSA_(cryptosystem) What does this mean ? This means that the structure and data within your files have been irrevocably changed, you will not be able to work with them, read them or see them, it is the same thing as losing them forever, but with our help, you can restore them. How did this happen ? Especially for you, on our server was generated the secret key pair RSA-2048 - public and private. All your files were encrypted with the public key, which has been transferred to your computer via the Internet. Decrypting of your files is only possible with the help of the private key and decrypt program, which is on our secret server. What do I do ? Alas, if you do not take the necessary measures for the specified time then the conditions for obtaining the private key will be changed. If you really value your data, then we suggest you do not waste valuable time searching for other solutions because they do not exist. ... Message presented in the CryptoWall ransom payment page: You did not pay in time for decryption, that's why the decryption price increases 2 times. At the moment, the cost of decrypting your files is 1000 USD/EUR. In case of failure to 04/06/14 - 11:36 your key will be deleted permanently and it will be impossible to decrypt your files. ... CryptoWall virus removal: Reboot your computer into Safe Mode. Delete the related file. How do I get my files back(decrypt) without pay for CryptoWall decrypter? Use Previous Versions to restore your files. Watch More virus removal videos at:https://www.youtube.com/user/MrRemoveVirus
Views: 515368 Mr. RemoveVirus
[WanaKiwi] WannaCry Ransomware Decryption Tool [Unlock Files Without Paying Ransom]
 
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WannaCry Ransomware Decryption Tool Released Free; Unlock Files Without Paying Ransom If your PC has been infected by WannaCry – the ransomware that wreaked havoc across the world last Friday – you might be lucky to get your locked files back without paying the ransom of $300 to the cyber criminals. ► [PES 2018] Full CPY REPACK Download & Install [Tutorial] https://youtu.be/8x_TcjTs3gY ► PTE Patch 7.0 Download + Install [Tutorial] https://youtu.be/Ixe4wWDK2i4 ► PES 2017 Download & Install [Tutorial] https://youtu.be/XXIo-K-NvXk Adrien Guinet, a French security researcher from Quarkslab, has discovered a way to retrieve the secret encryption keys used by the WannaCry ransomware for free, which works on Windows XP, Windows 7, Windows Vista, Windows Server 2003 and 2008 operating systems. WannaCry Ransomware Decryption Keys The WannaCry's encryption scheme works by generating a pair of keys on the victim's computer that rely on prime numbers, a "public" key and a "private" key for encrypting and decrypting the system’s files respectively. To prevent the victim from accessing the private key and decrypting locked files himself, WannaCry erases the key from the system, leaving no choice for the victims to retrieve the decryption key except paying the ransom to the attacker. But here's the kicker: WannaCry "does not erase the prime numbers from memory before freeing the associated memory," says Guinet. Based on this finding, Guinet released a WannaCry ransomware decryption tool, named WannaKey, that basically tries to retrieve the two prime numbers, used in the formula to generate encryption keys from memory, and works on Windows XP only. Note: Below I have also mentioned another tool, dubbed WanaKiwi, that works for Windows XP to Windows 7. "It does so by searching for them in the wcry.exe process. This is the process that generates the RSA private key. The main issue is that the CryptDestroyKey and CryptReleaseContext does not erase the prime numbers from memory before freeing the associated memory." says Guinet So, that means, this method will work only if: The affected computer has not been rebooted after being infected. The associated memory has not been allocated and erased by some other process. "In order to work, your computer must not have been rebooted after being infected. Please also note that you need some luck for this to work, and so it might not work in every case!," Guinet says. "This is not really a mistake from the ransomware authors, as they properly use the Windows Crypto API." While WannaKey only pulls prime numbers from the memory of the affected computer, the tool can only be used by those who can use those prime numbers to generate the decryption key manually to decrypt their WannaCry-infected PC’s files. WanaKiwi: WannaCry Ransomware Decryption Tool ► download link: http://j.gs/16891485/wkd OR http://j.gs/16891485/wktool Good news is that another security researcher, Benjamin Delpy, developed an easy-to-use tool called "WanaKiwi," based on Guinet's finding, which simplifies the whole process of the WannaCry-infected file decryption. All victims have to do is download WanaKiwi tool from Github and run it on their affected Windows computer using the command line (cmd). WanaKiwi works on Windows XP, Windows 7, Windows Vista, Windows Server 2003 and 2008, confirmed Matt Suiche from security firm Comae Technologies, who has also provided some demonstrations showing how to use WanaKiwi to decrypt your files. Although the tool won't work for every user due to its dependencies, still it gives some hope to WannaCry's victims of getting their locked files back for free even from Windows XP, the aging, largely unsupported version of Microsoft's operating system. Music: Alan Walker - Fade [NCS Release] #TAG #TAGS Pemerintah Antisipasi Serangan Ransomware Wanna Cry WANNACRY RANSOMWARE SPREADS LIKE PLAGUE - WANNA CRY Decryptor - WHAT IS RANSOMWARE? Global Cyber Attack Chaos Wanna Cry Ransomware Live Demo of Wana Cry/WanaCrypt v2 Ransomware propagation on Windows Client Cyber Retas 74 Negara Termasuk Indonesia Dengan Virus Wanna Cry Wanna cry virus in action Apa Itu Virus Ransomware Wanna Cry How do I get rid of WannaCry 2.0 popup?(Wana Decrypt0r2.0 REMOVAL) How to Prevent infect WannaCry Ransomware WannaCry on Linux WannaCry ransomware attack: Bigliest ever cyberattack affects over 200,000 Ransomware virus 'WannaCry' plagues 10k organizations 200k computers across 150 countries WannaCry ransomware which recently infected 10k organizations and 200k individuals in over 150 countries ANONYMOUS - CYBER MASSIVE ATTACK of May 12, 2017 #WannaCry protects wanna cry ransomeware pc tutorial windows fear mongering wiredzero Shadow Brokers DOUBLEPULSAR ransomware wannacrypt tutorial cara how to update auto update offline manual window windows xp windows 7 windows 8 window 10 security center firewall kaspersky internet sucurity anti virus anti ransomware
Views: 2539 WOLeZ 212
Remove DeriaLock Ransomware and Decrypt Your Files
 
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Remove DeriaLock Ransomware and Decrypt Your Files Ransomware is a real security threat to your computers data and personal information. Please backup your computer on a regular basis and use common sense when downloading and click files. Your System has Locked! If you try to restart you PC, ALL data will delete. If you want your data back, pay 30 USD. Instuctions: Is give no other way to get you computer/data back exdcept to pay a special Key. You can buy the Key at the following Skype account: "arizonacode". If you contact the bellow named Skype account send him you HWID the bottom left is to be seen. If you Spamming the skype account, you can’t get you data back After you buy the key, paste him into the textbox. If you need the decrypter tool, please contact Michael Gillespie below. The DeriaLock decrypter https://twitter.com/demonslay335 More info about this ransomware can be found here. https://www.bleepingcomputer.com/news/security/new-derialock-ransomware-active-on-christmas-includes-an-unlock-all-command/ hope this video helps you out, if you want to join my foum, link is below: http://www.briteccomputers.co.uk/forum
Views: 4673 Britec09
HOW TO FIX " Your personal files are encrypted! " popup from CryptoLocker ransomware
 
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Remove CryptoLocker Ransomware and Restore Encrypted files. Cryptolocker (also known as "Trojan/Ransom-ACP", "Trojan.Ransomcrypt.F") is a Ransomware. After infected, -- usually following the opening of a malicious email. You will see a Cryptolocker - "Your personal files are encrypted!" windows popup Your important files encryption produced on this computer: photos, videos, documents, etc. Here is a complete list of encrypted files, and you can personally verify this. Encryption was produced using a unique public key RSA-2048 generated for this computer. To decrypt files you need to obtain the private key.(...) -- CryptoLocker takes control of the user's system and locks up all files How to remove CryptoLocker Ransomware & Restore Cryptolocker Encrypted files. Start your computer in "Safe Mode with Networking" To do this, 1. Shut down your computer. 2. Start up your computer (Power On) and, as your computer is booting up, press the "F8" key before the Windows logo appears. Follow the video,Good luck for you.
Views: 323851 Anti Computer Virus
How to Decrypt the Encrypted Files and Folders in Windows 10
 
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By using this method you can decrypt the files and folders for windows 10. Encrypted files and folders are meant to protect any intrusion or unwanted access for other users on your system. If you want to learn how to Encrypt the files and folders, then visit the following URL : https://www.youtube.com/watch?v=uF_ewHntpeg Once your files and folders are encrypted then no other user than you, can access them. Again in order to decrypt them you can use the method used in this tutorial. If you like the video, keep sharing it and post your valuable comments in the below comment box. Thank You :)
Views: 53061 Techno Math
Nemesis Ransomware Removal Guide + File Recovery Help
 
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Nemesis Ransomware decryption and removal help - http://bestsecuritysearch.com/nemesis-ransomware-virus-removal-steps-protection-updates/ This video guides you through the manual removal process Nemesis ransomware. The Nemesis is a vicious data locker ransomware. It encrypts target data utilizing strong encipher algorithm and renders it completely unusable. The trait of an encrypted file is a malicious extension of four random symbols after the original filename. You can avoid the ransom payment and try alternative data recovery approaches. Enter the link above and find some of them in step six of the removal instructions in the end. Like and share this video. Be part of our mission to spread cybersecurity awareness! Subscribe to our channel for more malware removal guides and security tips. Do you find this video helpful? Don't hesitate to leave us a comment in case that you have any questions or need further help. BSS Team Disclaimer: All apps seen in the video are used only for demonstration purposes of the existing removal methods. Best Security Search does not hold any responsibility for any consequences associated with the programs.
Views: 1239 Best Security Search
WannaCry  Unlock Files Without Paying Ransom, Wannakey Ransomware Decryption Tool Released;
 
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WannaCry Unlock Files Without Paying Ransom, Wannakey Ransomware Decryption Tool Released; If your PC has been infected by WannaCry – the ransomware that wreaked havoc across the world last Friday – you might be lucky to get your locked files back without paying the ransom of $300 to the cyber criminals. Adrien Guinet, a French security researcher from Quarkslab, has discovered a way to retrieve the secret encryption keys used by the WannaCry ransomware for free, which works on Windows XP, Windows 7, Windows Vista, Windows Server 2003 and 2008 operating systems. https://github.com/aguinet/wannakey https://thehackernews.com/2017/05/wannacry-ransomware-decryption-tool.html?m=1
Views: 1144 Defango
How to remove CryptoWall 3.0 virus (New version CryptoWall removal guide)
 
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CryptoWall3.0 removal guide. CryptoWall 3.0 (new version CryptoWall) is one of many ransomware trojans that encrypt the personal files on your computer and demand a bitcoin payment before you can restore them. Victims of the ransomware are given 168 hours (7 days) to pay $500 in Bitcoins if they want to recover their files. After the 7-day deadline, the amount increases to $1,000. The CryptoWall3.0 malware, distributed via spam and malvertising campaigns, helped cybercriminals make a lot of money. What is CryptoWall? CryptoWall is a file-encrypting ransomware program that was released around the end of April 2014 that targets all versions of Windows including Windows XP, Windows Vista, Windows 7, and Windows 8. In 2015, the malware developers released a new version of CryptoWall called CryptoWall 3.0, there aren’t any major differences between CryptoWall 3.0 and the previous variant. CryptoWall 3.0 will also create 3 files:HELP_DECRYPT.PNG, HELP_DECRYPT.URL, HELP_DECRYPT.HTML, HELP_DECRYPT.TXT. If infected with CryptoWall 3.0, HELP_DECRYPT.PNG, HELP_DECRYPT.URL, HELP_DECRYPT.HTML, HELP_DECRYPT.TXT files in each folder that files were encrypted and in the Windows desktop. The HELP_DECRYPT.TXT file contain information: What does this mean ? This means that the structure and data within your files have been irrevocably changed, you will not be able to work with them, read them or see them,it is the same thing as losing them forever, but with our help, you can restore them. How did this happen ? Especially for you, on our server was generated the secret key pair RSA-2048 - public and private. All your files were encrypted with the public key, which has been transferred to your computer via the Internet. Decrypting of your files is only possible with the help of the private key and decrypt program, which is on our secret server. ... For more specific instructions, please visit your personal home page, there are a few different addresses pointing to your page below: 1.http://paytoc4gtpn5czl2.torforall.com/xxx 2.http://paytoc4gtpn5czl2.torman2.com/xxx 3.http://paytoc4gtpn5czl2.torwoman.com/xxx How to remove CryptoWall 3.0? Reboot your computer into Safe Mode remove associated CryptoWall Files. How to decrypt files encrypted by CryptoWall3.0? Unfortunately at this time there is no way to retrieve the private key that can be used to decrypt your files without paying the ransom. You can try to restore the files encrypted by CryptoWall Using Windows Previous Versions.Good luck for you :) Learn more about how to remove computer virus ►https://www.youtube.com/user/MrRemoveVirus
Views: 402044 Mr. RemoveVirus
How to Decrypt Drive
 
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Learn how to decrypt an encrypted drive. Learn how to turn off the bitlocker option and remove encryption from a drive. Don't forget to check out our site http://howtech.tv/ for more free how-to videos! http://youtube.com/ithowtovids - our feed http://www.facebook.com/howtechtv - join us on facebook https://plus.google.com/103440382717658277879 - our group in Google+ In this tutorial, we will teach you how to decrypt drive. For the purpose of this tutorial, we have already encrypted a removable disk. We will teach you how to decrypt it and remove encryption from this removable disk in this tutorial. Step 1 -- Open Computer Follow this step by step guide in order to learn how to decrypt drive. First of all, click on the start button and from the start menu, open the Computer. Step 2 -- Unlock drive For the purpose of this tutorial, we have already created an encrypted removable disk. We will right click on the drive and from the drop down menu, select the unlock drive option. Step 3 -- Enter password in drive encryption As a result, the bitlocker drive encryption window will open. Over there, you'd have to enter the password for the drive. Once you are done, hit the enter key in order to unlock. Step 4 -- Open bitlocker Now go back to the start menu and open the control panel. From there, go to system and security and then click on the bitlocker drive encryption option. Step 5 -- Turn off bitlocker Once there, go to the removable drive region and click on the turn off bitlocker option. As a result, a pop up will appear on your screen informing you that your drive will be decrypted. Click on the decrypt drive button in order to proceed. Step 6 -- Decrypt drive As a result, the decryption will begin. You can monitor the decryption process from the bitlocker dialog box. Once the decryption has completed, click on the close button to exit the dialog box. Step 7 -- Encryption removed Now open computer and locate the removable drive that was just decrypted. Right click on it and select the eject option. You'd be prompted with a warning message. Click on the continue button to eject the drive. Once done, we will plug in the removable drive again and will open it. You will notice that there is no encryption anymore and the contents of the drive will be visible to you. In this manner, you can decrypt a drive.
How to recover your system from a Ransomware attack
 
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After infecting a system with Locky Ransomware, CSO attempted to recover it using basic tools and backups. Click here to subscribe to IDG.tv: https://www.youtube.com/user/IDGTV/subscribe Check out our website for our full video collection: http://www.idg.tv Like IDG.tv on Facebook: https://www.facebook.com/idgtv.us Follow IDG.tv on Twitter: https://twitter.com/IDGtv_US Follow us on Instagram: http://instagram.com/IDGtv
Views: 7528 CSO
How to Encrypt & Decrypt Files or Folders Using Command Prompt
 
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Get certified after completion on of Certificate Authority (ADCS) Server 2016 Course: https://www.udemy.com/complete-certificate-authority-adcs-server-2016-course/ Learn more: http://vincenttechblog.com
Views: 38927 Vincent's Tech Blog
How do I remove RSA-4096 cryptosystem encrypt ransomware? (Crypto Virus Removal Guide)
 
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What is RSA-4096 encrypt virus? Are you infected with RSA-4096 encrypt virus? And a ransom of $500 was asked for decypt files. What is RSA-4096 encrypt virus? How to remove RSA-4096 encrypt virus (Cryptosystem virus) ? RSA-4096 encrypt virus (New TeslaCrypt 3.0 .xxx, .vvv, .ttt, .micro, or .mp3 variants ) is a file-encrypting ransomware, which will encrypt the personal documents found on victim’s Computer using RSA-4096 key and extorts money from the victims. The ransom is $500 for decrypt your files. Once RSA-4096 infecte your computer, it will scan the the computer for data files that match a particular extension. If it detects a targeted extension it will encrypt the files using AES encryption and encrypt the personal documents found on victim's computer using RSA-4096 key. Then the RSA 4096 Ransomware will pop up the following message on the victim's computer(The RSA-4096 encrypt ransom note filenames are now in the format _ReCoVeRy_+xxx.txt, _ReCoVeRy_+xxx.png, _ReCoVeRy_+[5-characters].HTML ): NOT YOUR LANGUAGE? USE https://translate.google.com What's the matter with your files? Your data was secured using a strong encryption with RSA4096. Use the link down below to find additional information on the encryption keys using RSA4096:https://en.wikipedia.org/wiki/RSA_(cr...) What exactly that means? It means that on a structural level your files have been transformed. You won't be able to use, read, see or work with them anymore. In other words they are useless, however, there is a possibility to restore them with our help. What exactly happened to your files? *** Two personal RSA4096 keys were generated for your PC/Laptop; one key is public, another key is private. *** All your data and files were encrypted by the means of the public key, which you received over the web. *** In order to decrypt your data and gain access to your computer you need a private key and a decryption software, which can be found on one of our secret servers. What should you do next? There are several options for you to consider: 1. You can wait for a while until the price of a private key will raise, so you will have to pay twice as much to access your files or 2. You can start getting BitCoins right now and get access to your data quite fast. In case you have valuable files, we advise you to act fast as there is no other option rather than paying in order to get back your data. In order to obtain specific instructions, please access your personal homepage by choosing one of the few addresses down below... Your files are encrypted. To get the key to decrypt files you have to pay 500 USD. If payment is not made ​​before (date) the cost of decrypting files will increase 2 times and will be 1000 USD Prior to increasing the amount left... How to get rid of RSA-4096 encrypt virus? Remove RSA-4096 encrypt virus manually 1. Restart your computer into Safe Mode 2. Remove associated RSA-4096 encrypt virus Files. Remove associated RSA-4096 encrypt virus Registry Information. How to get my files back(Decrypt files)? Unfortunately at this time there is still no way to decrypt the newew variants of RSA-4096 encrypt virus.
Views: 68639 Mr. RemoveVirus
Manually Remove "Your personal files are encrypted" by  Cryptowall/Cryptorbit/Cryptolocker & others
 
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Remove Cryptorbit, Cryptolocker, Cryptowall & others manually. No software required. I show you how to remove Cryptorbit but its the same exact steps to remove Cryptolocker as well as other similar infections. Follow me step by step. Pause this video if you need to. We will go into the registry but i will go slowly so pay attention. -First thing to do is go into you control panel and uninstall anything to do with Crypt. Some of you will have something in there, others will not. -Next we restart computer into "safe mode". Once your your computer starts to reboot back up, keep pressing the F8 key to get it in safe mode. Once there highlight and click "safe mode". -Once your computer is booted up and in safe mode click on the start button and type in "regedit" - Now, follow this exact path.. Hkey_current_User--software--microsoft--windows--current version--run- now look for Cryptorbit, right click it and press delete. And click yes to the prompt asking if you are sure you want to delete it. - Now click on the Start menu then click on "Administrator", then Appdata--Roaming-- then find and delete Cryptorbit. - Restart your computer as normal. And there you go. Congrats to you, you just did actually what these free programs will do except for adding additional malware on your computer. Please sub and Like if this worked for you. Thank you! Cyyptorbit Your personal files are encrypted. All files including videos, photos and documents, etc. on computer are encrypted. Encryption was produced using a unique public key generated for this computer. To decrypt files, you need to obtain the private key. The single copy of the private key, which will allow you to decrypt the files, located on a secret server on the Internet; the server will destroy the key after a time specified in this windows. After that, nobody and never will be to restore files. File decryption cost ~ $50. (some will say $200) In order to decrypt the files, open site 4sfxctgp53imlvzk.onion.to/index.php and follow the instruction. If 4sfxctgp53imlvzk.onion.to is not opening, please following steps below: 1. You must download and install this browser: http://www.torproject.org/projects/torbrowser.html.en 2. After installation, run the browser and enter the address: 4sfxctgp53imlvzk.onion.to/index.php 3. Follow the instructions on the web-site. We remind you that the sooner you do, the more changes are left to recover the files. Guaranteed recovery is provided within 10 days. http://barnegat-manahawkin.patch.com/groups/police-and-fire/p/prosecutor-warns-of-latest-home-computer-virus Prosecutor Warn of Latest Computer Virus
Views: 194369 iLuvTrading
Beware Ransomware Called Venus Locker
 
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Beware Ransomware Called Venus Locker VenusLocker What happened to my files? Your personal files, including your photos, documents, videos and other important files on this computer, have been encrypted with RSA-4096, a strong encryption algorithm. RSA algorithm generates a public key and a private key for your computer. The public key was used to encrypt your files a moment ago. The private key is necessary for you to decrypt and recover your files. Now, your private key is stored on our secret Internet server. And there is no doubt that no one can recover your files without your private key. There is no way to decrypt the files as of yet unless you pay and even then there is no guarantee they will send you the decryption key. NEVER pay for decryption. 1. Back up your data regularly and store backup away from any computer. 2. Be very careful when opening email attachments and DON’T open attachments from unknown source. 3. Have a good antivirus security setup. Example: SecureAPlus Malarebytes Pro, Firewall. 4. Keep your computer fully updated with the latest security updates. 5. Don’t use you Administrator account as default, use standard account. 6. Show hidden file extensions of files, example: .exe 7. Don’t download programs from untrusted sites. 8. Don’t update via a popup message, go to manufactures webs site and check update there first. 9. Block .exe files in email. There is no need to receive .exe files via email. 10. Don’t open suspicions files, upload them to virustotal.com. 11. Don’t install cracked or pirated software. 12. Do NOT pay the ransom! Need help and support with computer problems? join our forum http://www.briteccomputers.co.uk/forum
Views: 8911 Britec09
Decrypt CryptON Ransomware for Free
 
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Fabian Wosar of Emsisoft released a free CryptON decrypter. Watch the video on how to decrypt CryptON ransomware for free Download free CryptON decrypter here: https://decrypter.emsisoft.com/crypton
Views: 4076 Virus Guides
How to remove CryptoWall 2.0 ransomware (CryptoWall 2.0 virus removal guide)
 
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Paytordmbdekmizq.tor4pay.com pop up virus is the NEW version of CryptoWall 2.0 ramsomware. This malware has been around for quite a while and was aimed to infect almost every version of Windows starting from Windows XP operating system. The paytordmbdekmizq.tor4pay.com virus were distributed through drive-by download attacks launched from popular websites via malicious advertisements. Onece infected, paytordmbdekmizq.tor4pay.com virus scans the PC for targeted files and encrypts all files so that it remains unusable, and a bunch of files seem to have been changed to DECRYPT_INSTRUCTION.HTML files. Then, the tor4pay virus will promote a website called Paytordmbdekmizq.tor4pay.com that can be use to return your control to all encrypted files. paytordmbdekmizq.tor4pay.com asking us to pay $500 for the decryption software. Every time restart your computer a txt document opens and browser opens and displays this stupid website http://paytordmbdekmizq.tor4pay.com asking to pay. The DECRYPT_INSTRUCTION.TXT which are instructions on how to do, Here is an excerpt: What happened to your files ? All of your files were protected by a strong encryption with RSA-2048 using CryptoWall 2.0. More information about the encryption keys using RSA-2048 can be found here: http://en.wikipedia.org/wiki/RSA_(cryptosystem) What does this mean ? This means that the structure and data within your files have been irrevocably changed, you will not be able to work with them, read them or see them, it is the same thing as losing them forever, but with our help, you can restore them. How did this happen ? Especially for you, on our server was generated the secret key pair RSA-2048 - public and private....... For more specific instructions, please visit your personal home page, there are a few different addresses pointing to your page below: 1.https://paytordmbdekmizq.tor4pay.com/1te9k1j 2.https://paytordmbdekmizq.pay2tor.com/1te9k1j 3.https://paytordmbdekmizq.tor2pay.com/1te9k1j 4.https://paytordmbdekmizq.pay4tor.com/1te9k1j 5.Paytordmbdekmizq.torsona.com IMPORTANT INFORMATION: Your personal page: https://paytordmbdekmizq.tor4pay.com/1te9k1j ... Ways to recover files encrypted by Paytordmbdekmizq.tor4pay.com(CryptoWall): Use Previous Versions to recover files without having to pay for the private key. Paytordmbdekmizq.tor4pay.com virus removal guide: Step1: Boot in Safe Mode. Step2: Remove tor4pay.com associated Files. Learn more about how to remove computer virus at:https://www.youtube.com/user/MrRemoveVirus
Views: 15160 Mr. RemoveVirus
Remove CryptoWall  virus
 
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Download Anti CryptoWall : http://formatlux.blogspot.com/ Download Anti CryptoWall : http://formatlux.blogspot.com/ CryptoWall Decrypter What happened to your files ? All of your files were protected by a strong encryption with RSA-2048 using CryptoWall. More information about the encryption keys using RSA-2048 can be found here: http://en.wikipedia.org/wiki/RSA_(cry...) What does this mean ? This means that the structure and data within your files have been irrevocably changed, you will not be able to work with them, read them or see them, it is the same thing as losing them forever, but with our help, you can restore them. How did this happen ? Especially for you, on our server was generated the secret key pair RSA-2048 - public and private. All your files were encrypted with the public key, which has been transferred to your computer via the Internet. Decrypting of your files is only possible with the help of the private key and decrypt program, which is on our secret server. What do I do ? Alas, if you do not take the necessary measures for the specified time then the conditions for obtaining the private key will be changed. If you really value your data, then we suggest you do not waste valuable time searching for other solutions because they do not exist. If you have important files and want them back you have to decrypt with this tool. I can provide you this program together with the secret key. All i need is the character ids that found on your infected files.. This tool if for the old version of cryptowall i can also generate keys for new version (cryptowall 3.0) with brute force.. pm me with your fb email address if interested. virus shortcut virus raccourci virus cryptolocker virus cryptowall
Views: 839 Format Lux
AppCheck Anti-Ransomware : Amnesia Ransomware (.amnesia) Block Video
 
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AppCheck Anti-Ransomware (www.checkmal.com) 제품이 파일을 .amnesia 확장명으로 암호화하는 Amnesia Ransomware 행위를 차단/제거 및 일부 훼손된 파일을 자동 복원하는 영상입니다.
Views: 503 CheckMAL Inc.
WanaKiwi- WannaCry Ransomware Decryption Tool
 
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If your PC has been infected by WannaCry – the ransomware that wreaked havoc across the world last Friday – you might be lucky to get your locked files back without paying the ransom of $300 to the cyber criminals. Adrien Guinet, a French security researcher from Quarkslab, has discovered a way to retrieve the secret encryption keys used by the WannaCry ransomware for free, which works on Windows XP, Windows 7, Windows Vista, Windows Server 2003 and 2008 operating systems. WannaCry Ransomware Decryption Keys The WannaCry's encryption scheme works by generating a pair of keys on the victim's computer that rely on prime numbers, a "public" key and a "private" key for encrypting and decrypting the system’s files respectively. To prevent the victim from accessing the private key and decrypting locked files himself, WannaCry erases the key from the system, leaving no choice for the victims to retrieve the decryption key except paying the ransom to the attacker. But here's the kicker: WannaCry "does not erase the prime numbers from memory before freeing the associated memory," says Guinet. Based on this finding, Guinet released a WannaCry ransomware decryption tool, named WannaKey, that basically tries to retrieve the two prime numbers, used in the formula to generate encryption keys from memory. "It does so by searching for them in the wcry.exe process. This is the process that generates the RSA private key. The main issue is that the CryptDestroyKey and CryptReleaseContext does not erase the prime numbers from memory before freeing the associated memory." says Guinet So, that means, this method will work only if: The affected computer has not been rebooted after being infected. The associated memory has not been allocated and erased by some other process. "In order to work, your computer must not have been rebooted after being infected. Please also note that you need some luck for this to work (see below), and so it might not work in every case!," Guinet says. "This is not really a mistake from the ransomware authors, as they properly use the Windows Crypto API." While WannaKey only pulls prime numbers from the memory of the affected computer, the tool can only be used by those who can use those prime numbers to generate the decryption key manually to decrypt their WannaCry-infected PC’s files. WannaKiwi Decryption Tool: https://github.com/gentilkiwi/wanakiwi/releases Good news is that another security researcher, Benjamin Delpy, developed an easy-to-use tool called "WanaKiwi," based on Guinet's finding, which simplifies the whole process of the WannaCry-infected file decryption. All victims have to do is download WanaKiwi tool from Github and run it on their affected Windows computer using the command line (cmd). WanaKiwi works on Windows XP, Windows 7, Windows Vista, Windows Server 2003 and 2008, confirmed Matt Suiche from security firm Comae Technologies, who has also provided some demonstrations showing how to use WanaKiwi to decrypt your files. Although the tool won't work for every user due to its dependencies, still it gives some hope to WannaCry's victims of getting their locked files back for free even from Windows XP, the aging, largely unsupported version of Microsoft's operating system.
Views: 1225 KarZan iT
How to remove .Cerber Ransomware (.CERBER File virus removal guide)
 
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How to Remove Cerber Ransomware and Restore .CERBER Encrypted Files? What is Cerber Ransomware? Cerber Ransomware is a file ecrypt virus, a ransomware called Cerber. This ".cerber" Ransomware may use a malicious exploit script do download itself on a computer. This method increases the probability of infecting the user successfully. First run, Cerber will encrypts all your data using AES-256 encryption, when encrypting your data, Cerber Ransomware will append the .cerber extension to all encrypted files. All your files' Type are change to CERBER File. Your computer will speak a message stating that your computer's files were encrypted: Attention! Attention! Attention!" Your documents, photos, databases and other important files have been encrypted!" The ".cerber" Ransomware will create 3 instructions on your desktop as well as in every folder that is encrypted. These files are called # DECRYPT MY FILES #.html, # DECRYPT MY FILES #.txt, and # DECRYPT MY FILES #.vbs. "DECRYPT MY FILES.txt" content: CERBER RANSOMWARE -------------------------------------------------------------------------------- Cannot you find the files you need? Is the content of the files that you looked for not readable? It is normal because the files' names, as well as the data in your files have been encrypted. Great!!! You have turned to be a part of a big community #CerberRansomware. -------------------------------------------------------------------------------- If you are reading this message it means the software "Cerber Ransomware" has been removed from your computer. -------------------------------------------------------------------------------- What is encryption? Encryption is a reversible modification of information for security reasons but providing full access to it for authorized users. To become an authorized user and keep the modification absolutely reversible (in other words to have a possibility to decrypt your files) you should have an individual private key. But not only it. It is required also to have the special decryption software (in your case "Cerber Decryptor" software) for safe and complete decryption of all your files and data. -------------------------------------------------------------------------------- ... Everything is clear for me but what should I do? The first step is reading these instructions to the end. Your files have been encrypted with the "Cerber Ransomware" software; the instructions ("# DECRYPT MY FILES #.html" and "# DECRYPT MY FILES #.txt") in the folders with your encrypted files are not viruses, they will help you. After reading this text the most part of people start searching in the Internet the words the "Cerber Ransomware" where they find a lot of ideas, recommendations and instructions. It is necessary to realize that we are the ones who closed the lock on your files and we are the only ones who have this secret key to open them. Any attempts to get back your files with the third-party tools can be fatal for your encrypted files. The most part of the third-party software change data within the encrypted file to restore it but this causes damage to the files. Finally it will be impossible to decrypt your files. When you make a puzzle but some items are lost, broken or not put in its place - the puzzle items will never match, the same way the third-party software will ruin your files completely and irreversibly. You should realize that any intervention of the third-party software to restore files encrypted with the "Cerber Ransomware" software may be fatal for your files. How to Remove Cerber Ransomware? Cerber will install itself in the %AppData%\{2ED2A2FE-872C-D4A0-17AC-E301404F1CBA}\ folder and name itself after a random Windows executable. Boot your computer into Safe Mode then delete this files. Remove Registry entries associated with Cerber Ransomware: HKCU\Software\Microsoft\Windows\CurrentVersion\Run\"random name" "%AppData%\{2ED2A2FE-872C-D4A0-17AC-E301404F1CBA}\[random].exe" How to Restore .CERBER Encrypted Files? Unfortunately there is .cerber decryption tool no way to decrypt the files untill now :(
Views: 130058 Mr. RemoveVirus
How to Stay Protected Against Ransomware
 
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How to Stay Protected Against Ransomware Ransomware is on the rise, so it’s very important to stay protected, the software which will be taking a look at today is renowned for its strength in security and protecting your personal computer from malware and ransomware. It’s of course Kaspersky Internet Security 2016, its one of my go to software companies when I am dealing with malware and want a good solid bit of software with great support, with regular security updates, it’s not a free product, but with ransomware on the rise, it’s important to get the right protection and I think Kaspersky Internet Security 2016 gives that in abundance, we will be testing the power of this software against some of the most nastiest crypto ransomware out there today. CBT Locker, Locky, Zepto, Petya, Satana, Fontom, CryptoWall, CrytoLocker, Cerber, FileLocker, TeslaCrypt, Torrent Locker, Venus Locker and more. Some of these ransomware can’t be decrypted, so if you are hit by any of these you are in big trouble and so is your valuable data, photo’s, music, documents, video, you name it these ransomware encrypts it. So sit back and enjoy the video. Need help with computer problems? Join my forum http://www.briteccomputers.co.uk/forum
Views: 6667 Britec09
Safehouse Explorer - free windows encryption software to hide, lock and protect files or folders
 
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How to easily protect and hide the secret files or folders on your USB Flash drive or memory stick. This video shows how to make your files invisible using the free SafeHouse Explorer security software. This very popular privacy software is fast, simple and free. Download from http://www.SafeHouseEncryption.com or http://www.safehousesoftware.com. [NB: Where you have the programme installed, and you have local admin rights, you can edit the content in the volume. With CD/DVDs (read-only) with the application and the volume, you can only read the contents but not edit.] Only constructive, positive feedback welcome!
Views: 3430 amrikw
How to Remove ".Locky" ransomware (Cryptosystem virus removal guide)
 
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Locky virus is a new ransomware that encrypts your data using AES encryption and then ransom 0.5 BTC (approximately US$210) bitcoins to pay for Locky Decryptor™ to decrypt your files. Locky virus is currently being distributed via email that contains Word document attachments with malicious macros. The email message will contain a subject similar to ATTN: Invoice J-98223146 and a message such as "Please see the attached invoice (Microsoft Word Document) and remit payment according to the terms listed at the bottom of the invoice". Once Locky virus is infect your PC, Locky will then scan all local drives and unmapped network shares for data files to encrypt. It appends the .locked extension to the encrypted files. It makes sure you see the following message by changing your desktop wallpaper: !!! IMPORTANT INFORMATION !!!! All of your files are encrypted with RSA-2048 and AES-128 ciphers. More information about the RSA and AES can be found here: http://en.wikipedia.org/wiki/RSA_(cryptosystem) http://en.wikipedia.org/wiki/Advanced_Encryption_Standard Decrypting of your files is only possible with the private key and decrypt program, which is on our secret server. To receive your private key follow one of the links: 1. http://i3ezlvkoi7fwyood.tor2web.org/34535A980... 2. http://i3ezlvkoi7fwyood.onion.to/34535A98023C... 3. http://i3ezlvkoi7fwyood.onion.cab/34535A98023... If all of this addresses are not available, follow these steps: 1. Download and install Tor Browser: https://www.torproject.org/download/download-easy.html 2. After a successful installation, run the browser and wait for initialization. 3. Type in the address bar: i3ezlvkoi7fwyood.onion/34535A9802... 4. Follow the instructions on the site. !!! Your personal identification ID: 34535A98023C9... !!! On the Windows desktop and in each folder where a file was encrypted, Locky will create ransom notes called _Locky_recover_instructions.txt. _Locky_recover_instructions.bmp How to remove Locky Cryptor virus? Removal guide: Remove Locky related Files: %UserpProfile%\Desktop\_Locky_recover_instructions.bmp %UserpProfile%\Desktop\_Locky_recover_instructions.txt %Temp%\random.exe How to get my files back after infected Locky Crypto virus? Unfortunately, at this time, there is no known way to decrypt files encrypted by Locky. What do I do? How to avoid infect Locky Crypter Ransomware 1.Backup regularly and keep a recent backup copy off-site. 2.Don’t enable macros in document attachments received via email. 3.Be cautious about unsolicited attachments.
Views: 58966 Mr. RemoveVirus
How WanaCrypt Encrypts Your Files - Computerphile
 
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Wanacrypt works super fast and even when you're offline. Dr Pound explains how hybrid ransomware systems work. Original Wana Decrypt0r video: https://youtu.be/88jkB1V6N9w The Perfect Code: https://youtu.be/WPoQfKQlOjg http://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: http://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com
Views: 256293 Computerphile
Hacks Weekly #5: Ransomware Protection – Top 3 Prevention Techniques to Use
 
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In this video, we are going to be discussing a pretty popular subject: ransomware protection. Ransomware is an extremely popular subject. It affects most of the organizations by encrypting data and asking for payment to get it back. You can also find this tutorial on our blog: cqu.re/5CQhacksweekly
Views: 3455 CQURE Academy
Prevent Ransomware Now
 
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Prevent Ransomware Now When it comes to protecting your computer and data against ransomware WinAntiRansom is another layered security step that you can use in preventing ransomware from getting onto your computer and encrypting your data. As you see in this latest video it does an awesome job at blocking Teslacrypt, Cryptowall, CryptoLocker, Torrent Locker, KillerLocker, Petya, Zepto, Lockey, Vinus Lock, Santana, Cerber 1, 2 and 3, Holly Crypt, Cry Ransom, Hitler 1 & 2, Ransom File Locker, CBT Locker and many more. WinAntiRansom recent update now has the ability to block Malware and Zero Day Attack. As you well know, being hit by ransomware can be devastating to anyone. Once it drops its payload onto the computer, it will encrypt all your data, then you will be held to ransom for a fee to decrypt your files. This can cripple small businesses and even bring the biggest companies to their knees. So why take the chance? WinAntiRansom is here to help and block ransomware before it strikes. Need help and advice with computer problems? join my fourm http://www.briteccomputers.co.uk/forum
Views: 7557 Britec09
RANSOMWARE
 
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WannaCry ransomware has attacked computers across the world but how does it work? Is this the World's Smallest Smartphone? https://www.youtube.com/watch?v=6gW7UqHyPyY Subscribe! http://www.youtube.com/austinevans More info: https://www.theguardian.com/society/2017/may/12/hospitals-across-england-hit-by-large-scale-cyber-attack https://www.nytimes.com/2017/05/15/business/china-ransomware-wannacry-hacking.html https://arstechnica.com/security/2017/04/nsa-leaking-shadow-brokers-just-dumped-its-most-damaging-release-yet/ https://technet.microsoft.com/en-us/library/security/ms17-010.aspx Instagram: http://instagram.com/austinnotduncan Twitter: http://twitter.com/austinnotduncan Facebook: https://www.facebook.com/austinnotduncan
Views: 1243871 Austin Evans
Fastest Way to Remove: Cryptorbit &  Cryptolocker-- "YOUR PERSONAL FILES ARE ENCRYPTED"
 
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Get rid of that annoying scam message "YOUR PERSONAL FILES ARE ENCRYPTED" right now"!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Easiest Way to Remove: Cryptorbit on Google Chrome, Mozilla, and Internet Explorer. Please note that the virus Cryptolocker is removed the same exact way. These easy steps should work for about 80% of you. However, if you are badly infected then you may need to go into your registry and/or system configuration (msconfig) and/or programs files, etc. You can also do a system restore for those of you that backed up your computer prior to infection. ----------------GOOGLE CHROME:-------------- 1- Go into your control panel and uninstall Cryptorbit You may want to do search with the word fox just in case its named something else.. eg. browserfox, fox updater, etc 2- Open Chrome, click the 3-bar or wrench (top right hand corner) select "settings" and look under "On startup" and select "open a specific page or set of pages" delete all instances of Cryptorbit 3- Same page, look for "Appearance" Make sure your "home button" is not set on Cryptorbit 4- Same page, under "Search" click "Manage search engines" delete Cryptorbit if its in there. 6- On the same page, click on "Extensions" on the top left under "History" and delete anything with the word Cryptorbit if its in there. 7- Restart your browser and surf freely! Sub, Likes, and comment will be greatly appreciated. Should these steps not work, please thumbs down and comment so i can assist further---eg.. Registry! ------------INTERNET EXPLORER (IE):------------ 1- Uninstall any instances of "Cryptorbit" in your control panel if you have any. 2- Open IE and click the Tools or Wrench (top right hand corner) and scroll down and select "Internet Options" and under "Home page" delete Cryptorbit its in there. 3- Go back to your tools or wrench on the top right hand corner and scroll down to "Manage add-ons". Then select "Toolbars and Extensions". Disable any instances of Cryptorbit 4- Same page, under "Search Providers" click remove anything that has to do with Cryptorbit if its in there. 5- Close and restart IE..And there you go! ------------------MOZILLA FIREFOX------------------ 1- Uninstall any instances of "Cryptorbit" in your control panel if you have any. 2- Open Firefox and click the Tools-Options. Under "Home Page" delete Cryptorbit if it is present and replace it with something else of you liking, eg. www.google.com 3- On the same page, click the "Applications" and make sure Cryptorbit is not present 4- Next step, click on tools, then click "add-ons", then click "Extensions" and check to see if Cryptorbit is in there. 5- Close and reopen FireFox.. there you have it. This exactly what the banner says------ Cyyptorbit Your personal files are encrypted. All files including videos, photos and documents, etc. on computer are encrypted. Encryption was produced using a unique public key generated for this computer. To decrypt files, you need to obtain the private key. The single copy of the private key, which will allow you to decrypt the files, located on a secret server on the Internet; the server will destroy the key after a time specified in this windows. After that, nobody and never will be to restore files. File decryption cost ~ $50. In order to decrypt the files, open site 4sfxctgp53imlvzk.onion.to/index.php and follow the instruction. If 4sfxctgp53imlvzk.onion.to is not opening, please following steps below: 1. You must download and install this browser: http://www.torproject.org/projects/torbrowser.html.en 2. After installation, run the browser and enter the address: 4sfxctgp53imlvzk.onion.to/index.php 3. Follow the instructions on the web-site. We remind you that the sooner you do, the more changes are left to recover the files. Guaranteed recovery is provided within 10 days.
Views: 5400 WorldofTech
How to Encrypt and Decrypt Files and Folders in Windows 10
 
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In this tutorial, I will guide you how to Encrypt and Decrypt Files and Folders in Windows 10. The Encrypting File System (EFS) is the built-in encryption tool in Windows used to encrypt files and folders on NTFS drives to protect them from unwanted access. Encrypting File System (EFS) is the strongest protection that is available for Windows to help you keep your individual files and folders secure.
Views: 4104 Soft Solutions
GANDCRAB V3  Virus - Remove + Restore  .CRAB Encrypted Files
 
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More information, file recovery methods and removal steps for GANDCRAB V3 .CRAB file extension ransomware: https://sensorstechforum.com/remove-gandcrab-3-virus-restore-crab-files This video is a step by step guide to remove .write File Ransomware completely from an infected PC. Official Microsoft download page for Windows Resource Kits: http://adf.ly/1lPdi8 Script for renewing Registry Editor: subinacl /subkeyreg HKEY_LOCAL_MACHINE /setowner=Administrators subinacl /subkeyreg HKEY_CURRENT_USER /setowner=Administrators subinacl /subkeyreg HKEY_CLASSES_ROOT /setowner=Administrators subinacl /subdirectories %SystemDrive% /setowner=Administrators subinacl /subkeyreg HKEY_LOCAL_MACHINE /grant=system=f subinacl /subkeyreg HKEY_CURRENT_USER /grant=system=f subinacl /subkeyreg HKEY_CLASSES_ROOT /grant=system=f subinacl /subdirectories %SystemDrive% /grant=system=f Data recovery software alternatives: http://adf.ly/1lPdu5 Shadow Explorer download page: http://adf.ly/1lPdj7 We hope this is useful. Feel free to like and comment. Write us if you need further help. Disclaimer: All apps seen in the video are used only for one purpose and that is to demonstrate removal methods. SensorsTechForum does not hold any responsibility with any consequences associated with such names and programs.
Views: 34081 SensorsTechForum
Bypassing Local Windows Authentication To Defeat Full Disk Encryption
 
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by Ian Haken In 2007, starting with Windows Vista, Microsoft began shipping a full disk encryption feature named BitLocker with professional and enterprise versions of Windows. Full disk encryption helps protect users from threats that include physical access. This can, for example, prevent the exposure of proprietary information and account credentials if a company laptop is lost, stolen, or even left temporarily accessible to an attacker. Under the hood, BitLocker utilizes a system's Trusted Platform Module (TPM) to store the secret key used for full disk encryption, and is able to use the features of the TPM to safely provide transparent, passwordless decryption of the disk on boot. Because BitLocker can work transparentlywithout any extra passwords or prompts on bootmany enterprises have opted to enable this form of full disk encryption as a part of their data loss prevention strategy. However, in this presentation, I will demonstrate how one can abuse physical access in order to bypass Windows authenticationthus accessing all of a user's dataeven when the disk is fully encrypted by BitLocker. This platform-independent attack effectively bypasses all of the protection offered by BitLocker, reliably and quickly allowing an attacker to retrieve all of the sensitive data on the machine, all without having to perform any cryptographic brute-forcing or hardware manipulation.
Views: 16119 Black Hat
Cerber 5.0 Virus - Remove and Try to Get The Files Back
 
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In case your files are encrypted with a random file extension and you have the Cerber wallpaper, take your time to review these instructions and learn further how to remove this latest variant of the 5.0 variant of the Cerber virus from your computer. We have also included alternative instructions on how to restore your files. Bear in mind that the file restoring instructions may not work on 100% of the scenarios, and use at your own risk! We advise you to backup all the encrypted data before following those instructions as well. If you want to learn more about Cerber 5.0 ransomware or simply want more detailed instructions and more methods to restore your file, please visit our article about the ".aesir" Locky ransomware variant by clicking on the web link below: http://sensorstechforum.com/cerber-ransomware-5-0-unleashed-remove-restore-files/ If you want more alternative methods on how to safely store your data and protect it from further infections by Cerber 5.0 or other ransomware, please read the following article: http://sensorstechforum.com/safely-store-your-important-files-and-protect-them-from-malware/ More Data Recovery programs: http://sensorstechforum.com/top-5-data-recovery-software-which-program-suits-me-best/
Views: 3265 SensorsTechForum
CryptoPrevent v2.0.1
 
08:39
Cryptolocker malware prevention utility now with whitelisting functionality! Be sure to get the latest updates from my website, currently at v2.1
Encrypt your entire hard drive! - Hak5
 
26:51
What's your best defense against a boot CD that breaks Windows passwords in two keystrokes? Encrypting your entire hard disk. Shannon's got the details on truecrypt drive encryption while Darren brings up plausible deniability with hidden volumes. -~-~~-~~~-~~-~- Please watch: "Bash Bunny Primer - Hak5 2225" https://www.youtube.com/watch?v=8j6hrjSrJaM -~-~~-~~~-~~-~-
Views: 43701 Hak5
Cerber Ransomware Decryptor | Free Download
 
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Finally, there is a free decryption tool for Cerber ransomware! Users, who suffer from this nasty malware can decrypt their files for free. Download the free Cerber decrypter here: https://mega.nz/#!aRoXRZyC!0lgl3V472sLG8qG2o2gkUWsXfwiup2br5AP2KUnuy_w
Views: 1182 Daily News
Removing Tesla crypt Alpha crypt HELP_TO_SAVE_FILES
 
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Here are the details on how to remove Tesla crypt from your computer that renames file extensions to .ezz extension. Here is the batch file which will help you find and rename all the file extensions with ezz to ecc, and a link to tool for decrypting files. http://labs.snort.org/files/TeslaDecrypt_exe.zip If you need help cleaning this, please let me know. Below is the sample of the message from the TXT FILE HELP_TO_SAVE_FILES -------------------------------------------------------------------- All your documents, photos, databases and other important files have been encrypted with strongest encryption RSA-2048 key, generated for this computer. Private decryption key is stored on a secret Internet server and nobody can decrypt your files until you pay and obtain the private key. If you see the main encryptor red window, examine it and follow the instructions. Otherwise, it seems that you or your antivirus deleted the encryptor program. Now you have the last chance to decrypt your files. Open http://qcuikaiye577q3p2.jjeyd2u37an30.com or http://qcuikaiye577q3p2.s24f53mnd7w31.com , https://qcuikaiye577q3p2.s5.tor-gateways.de/ in your browser. They are public gates to the secret server. Copy and paste the following Bitcoin address in the input form on server. Avoid missprints. 18EoD9wcxb8jMj3wxpL1zgJaiYDng5m6aq Follow the instructions on the server. If you have problems with gates, use direct connection: 1. Download Tor Browser from http://torproject.org 2. In the Tor Browser open the http://qcuikaiye577q3p2.onion/ Note that this server is available via Tor Browser only. Retry in 1 hour if site is not reachable. Copy and paste the following Bitcoin address in the input form on server. Avoid missprints. 18EoD9wcxb8jMj3wxpL1zgJaiYDng5m6aq Follow the instructions on the server. ----------------------------------------------------------------- If you copy and paste this information into a blank notepad and rename it to rename.bat it will help you find and rename all the ezz files on your computer to ecc. You do this by going into command prompt, to the folder where you created the rename.bat with the information below and than enter the following command depending on the name of the file for the renaming. I chose filerename.bat Example: c:\cisco\filerename.bat *.ezz *.ecc" This will find and rename just the files with ezz to ecc and than you will be able to use the tool to decrypt the files. For the tool to work, I also copied it to the cisco folder and ran it with the command: c:\cisco\tesladecrypter.exe /scanEntirePc ------COPY PASTE WITHOUT THIS------------------------------------------ : This batch file renames file extensions in bulk. : File extensions are renamed for all matching files in the current folder and in : all subdirectories. @echo off if not [%3]==[] ( goto usage ) if [%2]==[] ( goto usage ) if [%1]==[] ( goto usage ) CALL SET arg=%2% CALL SET ext=%%arg:~1%% if %arg%==* ( forfiles /S /M %1 /C "cmd /c rename @file @fname ) else ( forfiles /S /M %1 /C "cmd /c rename @file @fname%ext%" ) if %ERRORLEVEL%==0 ( echo Successfully renamed the file extensions. ) goto :eof :usage echo Usage: echo TO rename file extension: FileRename.bat *.ezz *.ecc" echo To strip file extension: FileRename.bat *.ext * --------------COPY PASTE WITHOUT THIS------------------------------- After you complete the tasks above: You have to download an app like ultrasearch https://www.jam-software.de/customers/downloadTrial.php?article_no=670&language=EN& Install the application and do search for any files with ezz and ecc extension, also check for files with the name HELP_TO_SAVE_FILES.txt and delete them all. Next: Delete all the history and data in the browsers ! Scan the computer with Spybot START-RUN and than enter %TEMP% and delete all the information in the folder. I would recommend that you start system file check.That is a utility built into the Operating System that will check for system file corruption The sfc /scannow command (System File Check) scans the integrity of all protected operating system files and replaces incorrect, corrupted, changed, or damaged versions with the correct versions where possible. System file check works on Vista, Win 7, Win 8, Win 8.1, and win 10 (see necessary modifications for 9926, 10041, & 10049 below. If you have modified your system files (including Windows DLL files) running sfc /scannow will revert the system files back to the default state. To run a system file check (SFC) Go to start Type CMD Right click and run as Administrator (called an elevated command prompt) If you want to verify and repair the OS type sfc /scannow
Views: 14292 Miha B.
Steganograhy [Please read description]
 
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Sorry, if you did not understand things about what I talked in video. I made it in a hotchpotch. Well, here are the thingies about what I wanted to discuss in the video. What is Steganography? Steganography is a means of obscuring data where secret messages are hidden inside computer files such as images, sound files, videos and even executable files so that, no one except the sender and the receiver will suspect the existence of stealth information in it. Steganography may also involve the usage of cryptography where the message is first encrypted before it is concealed in another file. Generally, the messages appear to be something else such as an image, sound or video so that the transfer of secret data remains unsuspected. The main advantage of steganography over other methods such as cryptography is that, it will not arose suspicion even if the files fall in the hands of a third party. Unlike cryptographic messages, stegnographic messages will no way attract the attention of a third party by themselves. Thus stegnanography has an upper hand over cryptography as it involves both encryption and obscurity. What are the Applications of Steganography? Steganography is mainly used to obscure confidential information/data during storage or transmission. For example, one can hide a secret message in an audio file and send this to another party via email instead of sending the message in the textual format. The receiver on the other end will decrypt the hidden message using the private decryption key. In a worst case scenario, even if a third party does manage to gain access to the email, all he can find is the audio file and not the hidden data inside it. Other usage of steganography include digital watermarking of images for reasons such as copyright protection. Even though steganography has many useful applications, some may use this technique for illegitimate purposes such as hiding a pornographic content in other large files. Rumors about terrorists using steganography for hiding and communicating their secret information and instructions are also reported. An article claiming that, al-Queda had used steganography to encode messages in images and transported them via e-mails, was reported by New York Times, in October 2001. How do Steganography Tools Work? Stegnography tools implement intelligent algorithms to carefully embed the encrypted text messages or data inside other larger files such as an image, audio, video or an executable file. Some tools will embed the encrypted data at the end of another file so that there will be enough room for storing larger data. There are many steganography tools available online but only a few are able to work flawlessly. I did not find any tool that worked perfectly on both small and large data. However, I have managed to develop my own tool that can work perfectly on all types of files and all size of data. The tool is called “Stego Magic“. You can download it from the following link. Here is the link as discussed in the video :- http://www.gohacking.com/downloads/resources/StegoMagic.zip The zip file contains two versions of Stego Magic: One for encrypting the text messages and the other for encrypting binary files. StegoMagic_TXT can be used to hide text messages in other files such as an image or a sound file. StegoMagic_BIN can be used to hide one binary file in another such as an executable file inside an image or an image inside a video file. With Stego Magic, there is no limitation on the size and type of the file that you are intending to hide. For example, you can hide a video of size 1 GB in an image of size 1 MB or hide an executable file inside a WORD document. The tool is pretty straightforward to use and requires no special understanding of the concept. At the end of the encryption process, a secret decryption key will be generated and the same is required during the decryption process. How to Use Stego Magic? Suppose you want to hide a text message inside a JPG file: 1. Place the JPG and the text file (.txt) in the same folder as that of StegoMagic_TXT.exe 2. Run StegoMagic_TXT.exe and follow the screen instructions to embed the text message inside the JPG image. Also, as discussed in the video, in Windows 7 and Vista you need to run it as administrator. 3. Note down the secret decryption key. Now you can send this image to your friend via email. To decrypt the hidden message, your friend should load this JPG file onto the Stego Magic tool and use the secret decryption key. I hope you’ve now understood what is steganography and how to use it to hide your secret data. For queries and feedback, please pass your comments.
Views: 1265 Hack Jack
Cerber ransomware infection
 
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Ransomware infects a Windows 7 computer, including a creepy audio demand.
Views: 68 Asher Langton
Avoid Ransomware With Linux PC's
 
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http://goo.gl/x5Sl7H I have not personally tested these but they appear to be highly rated. I have never been attacked in Linux yet :) Total OS Today - Total Technology For Beginners and Beyond. Don’t forget to subscribe. https://www.youtube.com/user/tostoday/about You can help support Total OS Today for more product testing. I prefer to test products sponsored by you. http://www.patreon.com/tostoday Donate with Paypal - http://bit.ly/1lj4uhw Some FREE Audio Downloads - https://archive.org/search.php?query=tostoday
Views: 1029 TOTAL OS TODAY
Hackers "The WannaCry" who infected 200,000 machines have only made $50,000 worth of bitcoin
 
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Hackers who infected 200,000 machines have only made $50,000 worth of bitcoin The WannaCry ransomware hackers have received around $50,000 worth of bitcoin so far. The amount the hackers will demand is expected to double from $300 to $600 on Monday. A window announcing the encryption of data including a requirement to pay appears on an electronic timetable display at the railway station in Chemnitz, eastern Germany, on May 12, 2017. A fast-moving wave of cyberattacks swept the globe, apparently exploiting a flaw exposed in documents leaked from the US National Security Agency. How to protect yourself from the 'WannaCry' ransomware attack 1 Hour Ago | 01:25 Hackers who locked files on 200,000 computers globally and asked for a bitcoin ransom payment to unlock them, have only made around $50,000, an industry source told CNBC, despite the large scale of the attack. On Friday, a virus known as WannaCry infected machines across 150 countries. It's known as ransomware which is a malicious piece of software that encrypts a user's files then demands them pay money to unlock them. In this case, the hackers asked for $300 worth of bitcoin. James Smith, CEO of Elliptic, a London-based start-up that helps law enforcement agencies track criminals using the cryptocurrency, said his company had uncovered that since Friday, around $50,000 worth of bitcoin payments have been made to the hackers by 7 a.m. ET on Monday. This was up from $45,000 at 4 a.m. ET. "We have seen the number of payments start to go up today," Smith told CNBC Monday. After 72 hours from when the attack started on Friday, the hackers said the fine would double to $600, and after seven days, the files would be permanently locked. "We think over the course of today as we approach the first deadline where fines double we will see a bigger increase (in bitcoin payments)," Smith added. The amount paid so far is still a small amount despite the global nature and scale of the attack. Security experts and government agencies have been urging people not to pay the ransom. Why payments have been slow One of the major reasons for the slow payments is perhaps because many people wouldn't know how to obtain and pay in bitcoin. "If a business is told it needs to pay this amount of bitcoin, most companies will be asking what bitcoin is … it's not straightforward," Smith explained. Obtaining large amounts of the cryptocurrency might take some time, and then setting up an account via a bitcoin wallet and exchange would also require a long onboarding process. At the same time, researchers have seen no evidence that paying the cybercriminals necessarily unlocks your files. "The decryption process itself is problematic, to say the least," cybersecurity firm Check Point said in a blog post on Sunday. "Unlike its competitors in the ransomware market, WannaCry doesn't seem to have a way of associating a payment to the person making it. Most ransomware … generate a unique ID and bitcoin wallet for each victim and thus know who to send the decryption keys to. WannaCry, on the other hand, only asks you to make a payment, and then … wait." Tracing bitcoin Hackers who deploy ransomware often ask for payments in bitcoin as it is often believed to be completely anonymous. But law enforcement agencies, working with companies like Elliptic, have figured out ways to trace this. It traces so-called bitcoin addresses back to people. These addresses are required to make payments to other people or organizations. At the moment, Elliptic is working on trying to trace the payments, but Smith said this would become clearer when the hackers try to withdraw their bitcoin in fiat currency. "The attackers haven't moved it. In previous cases we have been able to work with law enforcement to see where the funds move because ultimately the attacker wants to turn it back into a currency they want to spend," Smith explained.
Views: 1018 SECRET OF EARTH
How do I remove CryptoDefense virus (How_Decrypt.txt removal guide)
 
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CryptoDefense is a newest encrypted fiels ransomware. If you computer infected with CryptoDefense Ransomware, the malware infection execute a variety of harmful actions on the computer system, it scan your computer and encrypt data files such as text files, image files, video files, and office documents. CryptoDefense Create a screenshot of your active Windows screen and upload it their Command & Control server. This screen shot will be inserted in your payment page on their Decrypt Service site, This malware also called Cryptolocker creates the following files after it has encrypted all your videos, music and documents: "HOW_DECRYPT.TXT", "HOW_DECRYPT.HTML" and "HOW_DECRYPT.URL" How_Decrypt.txt: All files including videos, photos and documents on your computer are encrypted by CryptoDefense Software. Encryption was produced using a unique public key RSA-2048 generated for this computer. To decrypt files you need to obtain the private key. The single copy of the private key, which will allow you to decrypt the files, located on a secret server on the Internet; the server will destroy the key after a month. After that, nobody and never will be able to restore files. In order to decrypt the files, open your personal page on the site https://rj2bocejarqnpuhm.onion.to/XXX and follow the instructions. If https://rj2bocejarqnpuhm.onion.to/XXX is not opening, please follow the steps below: 1. You must download and install this browser (...) When you open rj2bocejarqnpuhm.onion you will see: Your files are encrypted. You did not pay in time for decryption, that's why the decryption price increases 2 times. At the moment, the cost of decrypting your files is 1000 USD/EUR. In case of failure to 13/04/14 - xxx your key will be deleted permanently and it will be impossible to decrypt your files. We are present a special software - CryptoDefense Decrypter - which is allow to decrypt and return control to all your encrypted files.How to buy CryptoDefense decrypter? What can you do? How to get rid of CryptoDefense/How_Decrypt.txt virus? Step1: Reboot your computer into Safe Mode, remove associated CryptoDefense Files and associated CryptoDefense Registry Information. Step2: update your antivirus and scan your entire system. (This video just a removal guide) More at:http://blog.teesupport.com/do-i-stand-a-chance-to-get-my-files-back-if-infected-with-cryptodefense/ Watch More virus removal videos at:https://www.youtube.com/user/MrRemoveVirus
Views: 38443 Mr. RemoveVirus
Cerber Ransomware v4.1 - What Do We Know So Far
 
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The new version of Cerber ransomware keeps using an extension for encrypted files which is based off of the computer’s MachineGuid value of the HKLM\Software\Microsoft\Cryptography registry key. For instance, the file extension will be AAAA if the MachineGuid value is xxxxxxxx-xxxx-xxxx-AAAA-xxxxxxxxxxxx.
Views: 167 Virus Guides
Encrypt, Decrypt, Shred Your Files with EasyKrypt Data Protection Software
 
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http://www.easykrypt.com The EasyKrypt software application makes it easy to encrypt, decrypt or shred your files by simply dragging them to the appropriate hot-spot. Be safe. Be smart. With advanced data protection from EasyKrypt.
Views: 150 EasyKrypt
Fsociety Crypto Miner Quick Dynamic Analysis
 
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Ring Ø Labs malware report and sample download link here: http://www.ringzerolabs.com/2017/07/fsociety-crypto-miner.html Ring Ø Labs Analysis Environment Setup: https://www.youtube.com/edit?o=U&video_id=Onqql1Zz3OE Ring Ø Labs is a Reverse Engineering site dedicated to analyzing malware, researching emergent security topics, and hacking the planet. www.RingZeroLabs.com Here are some approaches in reverse engineering a malware sample: Reverse engineer: The most obvious approach is to completely reverse engineer a piece of malware. This obviously takes a great amount of time, so other approaches are more practical. Exploitation techniques: Another approach you can take is to focus on the exploitation techniques of a piece of malware. Occasionally you will see a piece of malware that is using a new exploitation technique, or is exploiting a zero-day vulnerability. In this case you may be interested only in the specific exploitation technique so you can timebox your analysis and only look at the exploitation mechanisms. Obfuscation: Malware will often obfuscate itself and make itself difficult to analyze. You might come across malware that you have seen before without obfuscation. In that case you may only want to focus on reverse engineering the new parts. Encryption methods: A common type of malware these days is ransomware. Ransomware essentially encrypts the victim's files and locks them up so that they can't be accessed or read. Oftentimes the authors of ransomware will make mistakes when they implement the encryption mechanisms. So if you focus your research on the encryption mechanisms you might be able to find weaknesses in their implementation and/or you might be able to find hard-coded keys or weak algorithms. C&C communication: This is something that is pretty commonly done when looking at malware. Analysts often want to figure out what the communication protocol is between a piece of malware on the client's side and the server on the command and control side. The communication protocol can actually give you a lot of hints about the malware’s capabilities. Attribution: Murky area - kind of like a dark art. It usually involves a lot of guesswork, knowledge of malicious hacking teams and looking at more than one piece of malware. Categorization and clustering: You can reverse engineer malware from a broader point of view. This involves looking at malware in bulk and doing a broad-stroke analysis on lots of different malware, rather than doing a deep dive. Techniques Now, let’s look at techniques that can be utilized while analyzing malware. First of all, we use static analysis. This is the process of analyzing malware or binaries without actually running them. It can be as simple as looking at metadata from a file. It can range from doing disassembly or decompilation of malware code to symbolic execution, which is something like virtual execution of a binary without actually executing it in a real environment. Conversely, dynamic analysis is the process of analyzing a piece of malware when you are running it in a live environment. In this case, you are often looking at the behavior of the malware and looking at the side effects of what it is doing. You are running tools like process monitor and sysmon to see what kinds of artifacts a piece of malware produces after it is run. We also use automated analysis. Oftentimes if you are looking at malware you want to automate things just to speed up the process to save time. However, use caution, as with automated analysis sometimes things get missed because you are trying to do things generically. If a piece of malware contains things like anti-debugging routines or anti-analysis mechanisms, you may want to perform a manual analysis. You need to pick the right tools for the job. DISCLAIMER: Our videos are strictly for documentary, educational, and entertainment purposes only. Imitation or the use of any acts depicted in these videos is solely AT YOUR OWN RISK. We (including YouTube) will not be held liable for any injury to yourself or damage to others resulting from attempting anything shown in any our videos. We do not endorse any specific product and this video is not an attempt to sell you a good or service. These videos are free to watch and if anyone attempts to charge for this video notify us immediately. By viewing or flagging this video you are acknowledging the above.
Views: 177 H4rM0n1cH4cK
What is Ransomware ? | Kya hota hai ransomware | Online Hafta Wasooli [Hindi]
 
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Encryption Kya hota hai ? : https://www.youtube.com/watch?v=tXR1N_D-9UU&t=14s Cryptography kya hota hai: https://www.youtube.com/watch?v=o_qVBKmXEaE&t=29s Hello Dosto !! aaj hum baat akrenge ransomware ke bare me ki ye kya hota hai aur kaise ye aapke computer ko nuksan pohcha sakta hai aasha karta hu apko ye video pasand ayegi. is video ko like kare aur apne dosto ke sath share kare. agar aap naye hai to mere channel ko subscribe kare. Subscribe to my channel for more videos like this and to support my efforts. Thanks and Love #TechnicalSagar LIKE | COMMENT | SHARE | SUBSCRIBE ---------------------------------------------------------------------------------- For all updates : LIKE My Facebook Page https://www.facebook.com/technicalsagarindia Follow Me on Twitter : http://www.twitter.com/iamasagar
Views: 52073 Technical Sagar
Unpacking Cerber ransomware in 5 minutes + dumping the configuration (example #1)
 
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*TURN ON SUBTITLES FOR MORE INFO* Unpacking Cerber packed by the NSIS crypter. Sample: https://www.virustotal.com/en/file/de344b8357f5e4f5fb1190a6172640127decab05b69c88cd441e176f3176c80f/analysis/1481832696/ You can format the dumped json file using i.e.: http://www.freeformatter.com/json-formatter.html See also: https://www.youtube.com/watch?v=r4_Ca4ZgU0I&lc=z12ozb0iosq4vh5oj04cj5oqmybwtp1ynug0k
Views: 2299 hasherezade
Decrypted mails over Gmail that even google and FBI cant themself
 
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This video I show you Thunderbird mail client, where I installed Enigmail w/ PGP. So you can decrype ur messages, only the guy who gets the mail can decrypt the mail. It means if FBI find this decrypted messages they wont be able to read it. Keep this in the mind, if you really are going to do secret things over the computer I would install custom made OS. Since Windows 10 is a spy tool for NSA. Everything you do over windows will be recorded and give to NSA. There is a few ways on youtube how to disable spy tools by microsoft paid by NSA. but it wont make you 100% secure unless you are running an Linux OS. I would recommand you to use a custom made VPN, even Premium VPN that you can buy on the internet wont keep you safe from FBI. if FBI finds out that you use VPN from a site that host VPN premium, the FBI can force them to leak info about you. 1) install linux 2) hide mac adresse 3) make ur own VPN 4) install PGP w/ enigmail 5) Dont use gmail, but other secret mail server like hillary did. 6) Make ur own human decrypting system. like I showed you at the end.
JPEG image decryption using TransCrypt Image
 
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This video shows how previously encrypted JPEG image can be decrypted using new TransCrypt Image. New TransCrypt Image is now being prepared for commercial use and will allow users to encrypt, sign, decrypt JPEG images without changing file format, that means a possibility to post , send and distribute secure JPEG images using normal means (social networks, email) like if it is a normal picture. Only specified will be able to see the content of image and you will not have to be worried about about security or authorship of our images. Demo download: Win 32 bit version http://www.secomsoft.com/en/arc/soft/tcimg112_en_x86.exe Win 64 bit version: http://www.secomsoft.com/en/arc/soft/tcimg112_en_x64.exe
Views: 18513 Buypki