Unlock92 Ransomware [Updated]

Also Known As: unlock92 virus
Distribution: Low
Damage level: Severe

Unlock92 ransomware removal instructions

What is Unlock92?

Unlock92 is a ransomware-type virus identical to Kozy.Jozy. After system infiltration, unlock92 employs the RSA-2048 asymmetric algorithm to encrypt various files (for example, pptx, .rar, .jpg, etc.) stored on computers. After successful file encryption, Unlock92 modifies the desktop wallpaper with an image containing a ransom demand message. This ransomware adds ".[random]@LOCKED", ".cdrpt", ".block", ".kukaracha", ".blocked", ".CRRRT" or ".CCCRRRPPP" extensions to each encrypted file.

The message (in Russian) claims that files have been encrypted and that victims must pay to restore them. To pay, victims must send one encrypted file with the key.bin file (which is placed in each folder containing encrypted files) to the email address provided (un92@protonmail.com, UNLOCK92@INDIA.COM or unlckr@protonmail.com). They will then supposedly receive further payment instructions. It is also stated that if no reply is received, victims should visit a link (provided) to a Tor website. As mentioned, Unlock92 uses an asymmetric algorithm and, thus, public (encryption) and private (decryption) keys are generated during the encryption process. The private key is stored on remote servers controlled by cyber criminals. Developers of Unlock92 attempt to sell this key to victims. At time of writing, the size of the ransom is unknown, however, many ransomware-type viruses demand around 1 Bitcoin (currently equivalent to $666.52). Research shows, however, that developers of these viruses often ignore victims, despite payments made. Paying will not deliver any positive result - you will simply support cyber criminals' malicious businesses and probably lose your money. Therefore, we strongly advise you to ignore all demands to pay or contact these people. At time of research, there were no tools capable of restoring files encrypted by Unlock92 - you can only restore your system and/or files from a backup.

Screenshot of a message encouraging users to contact the developers of Unlock92 ransomware to decrypt their compromised data:

Unlock92 decrypt instructions

Research shows that Unlock92 is identical to Kozy.Jozy and also very similar to hundreds of other ransomware-type viruses such as CTB-Locker, Cerber, CryptoWall, Locky, etc. All have identical behavior - they encrypt files and make ransom demands to restore them. Even the distribution methods are identical. Developers often distribute ransomware using fake software updaters, malicious email attachments, peer-to-peer (P2P) networks, and trojans. Therefore, you should have legitimate anti-virus/anti-spyware software installed, keep all installed applications up-to-date, and never open files attached to messages sent from unrecognized/suspicious email addresses. Finally, download your files/programs from trusted sources only (such as official download websites). Remember: the key to computer safety is caution.

Screenshot of Unlock92 .txt ransom-demand message:

unlock92 ransomware .txt

Update 1 July, 2016 - Michael Gillespie has created a tool capable of decrypting files encrypted by this ransomware free of charge. Download it HERE.

Screenshot of Unlock92 ransomware decrypter:

unlock92 ransomware decrypter

Ransom demand message:

Если вы хотите их восстановить то отправьте один из пострадавших файлов и файл Кеу.Ып (из любой папки с зашифрованными файлами) на е-mai1: UNLOCK92@INDIA.COM Если вы не получили ответа в течение суток то скачайте с сайта https://www.torproject.org/download/download-easy.html.en ТОВ браузер и зайдите с его помощью на сайт http://fnjmegsn7tbrrnkl.onion - там будет указан действующий почтовый ящик.
Iопытки самостоятельно расшифровать файлы приведут к их безвозвратной порче!

 Screenshot of Unlock92 ransomware website (used to display a working contact email address):

Website of unlock92 ransomware

Types of files targeted by Unlock92 ransomware:

.cd, .ldf, .mdf, .max, .dbf, .epf, .1cd, .md, .pdf, .ppt, .xls, .doc, .arj, .tar, .7z, .rar, .zip, .tif, .jpg, .bmp, .png, .cdr, .psd, .jpeg, .docx, .xlsx, .pptx, .accdb, .mdb, .rtf, .odt, .ods, .odb, .odg

Update 2017, 25 October - Cyber criminals have released an updated variant of this ransomware. It now adds a random extension for encrypted files (for example ".i25fx10") and uses unlckr@protonmail.com email to communicate with the victims.

Screenshot of files encrypted by the updated variant of Unlock92 ransomware:

unlock92 ransomware updated variant - encrypted files

Screenshot of a Tor (.onion) website used to inform victims of an email address that should be used to contact Cyber criminals to receive the ransom payment instructions:

unlock92 ransomware updated variant Tor .onion website

Update: 20 July, 2018 - Cyber criminals have released a variant of this ransomware that instead of encrypting the files, compresses them with a .zip extension. This variant also has a new ransom demanding message:

Если хотите вернуть ваши файлы отправьте один небольшой архив и файл KEY.VL на e-mail: un92@protonmail.com
Если вы не получили ответа в течение суток то скачайте с сайта www.torproject.con браузер  TOR
и с его помощью зайдите на сайт: http://n3r2kuzhw2h7x6j5.onion  -  там будет указан действующий почтовый ящик.
Пароль для архива состоит более чем из 50 символов. На самостоятельный подбор уйдёт не один год.

Unlock92 ransomware removal:

Instant automatic removal of unlock92 virus: Manual threat removal might be a lengthy and complicated process that requires advanced computer skills. Spyhunter is a professional automatic malware removal tool that is recommended to get rid of unlock92 virus. Download it by clicking the button below:
▼ DOWNLOAD Spyhunter By downloading any software listed on this website you agree to our Privacy Policy and Terms of Use. Free scanner checks if your computer is infected. To remove malware, you have to purchase the full version of Spyhunter.

Quick menu:

Step 1

Windows XP and Windows 7 users: Start your computer in Safe Mode. Click Start, click Shut Down, click Restart, click OK. During your computer start process, press the F8 key on your keyboard multiple times until you see the Windows Advanced Option menu, and then select Safe Mode with Networking from the list.

Safe Mode with Networking

Video showing how to start Windows 7 in "Safe Mode with Networking":

Windows 8 users: Start Windows 8 is Safe Mode with Networking - Go to Windows 8 Start Screen, type Advanced, in the search results select Settings. Click Advanced startup options, in the opened "General PC Settings" window, select Advanced startup. Click the "Restart now" button. Your computer will now restart into the "Advanced Startup options menu". Click the "Troubleshoot" button, and then click the "Advanced options" button. In the advanced option screen, click "Startup settings". Click the "Restart" button. Your PC will restart into the Startup Settings screen. Press F5 to boot in Safe Mode with Networking.

Windows 8 Safe Mode with networking

Video showing how to start Windows 8 in "Safe Mode with Networking":

Step 2

Log in to the account infected with the Unlock92 virus. Start your Internet browser and download a legitimate anti-spyware program. Update the anti-spyware software and start a full system scan. Remove all entries detected.

If you cannot start your computer in Safe Mode with Networking, try performing a System Restore.

Video showing how to remove ransomware virus using "Safe Mode with Command Prompt" and "System Restore":

1. During your computer start process, press the F8 key on your keyboard multiple times until the Windows Advanced Options menu appears, and then select Safe Mode with Command Prompt from the list and press ENTER.

Boot your computer in Safe Mode with Command Prompt

2. When Command Prompt mode loads, enter the following line: cd restore and press ENTER.

system restore using command prompt type cd restore

3. Next, type this line: rstrui.exe and press ENTER.

system restore using command prompt rstrui.exe

4. In the opened window, click "Next".

restore system files and settings

5. Select one of the available Restore Points and click "Next" (this will restore your computer system to an earlier time and date, prior to the Unlock92 ransomware virus infiltrating your PC).

select a restore point

6. In the opened window, click "Yes".

run system restore

7. After restoring your computer to a previous date, download and scan your PC with recommended malware removal software to eliminate any remaining Unlock92 ransomware files.

To restore individual files encrypted by this ransomware, try using Windows Previous Versions feature. This method is only effective if the System Restore function was enabled on an infected operating system. Note that some variants of Unlock92 are known to remove Shadow Volume Copies of the files, so this method may not work on all computers.

To restore a file, right-click over it, go into Properties, and select the Previous Versions tab. If the relevant file has a Restore Point, select it and click the "Restore" button.

Restoring files encrypted by CryptoDefense

If you cannot start your computer in Safe Mode with Networking (or with Command Prompt), boot your computer using a rescue disk. Some variants of ransomware disable Safe Mode making its removal complicated. For this step, you require access to another computer.

To regain control of the files encrypted by Unlock92, you can also try using a program called Shadow Explorer. More information on how to use this program is available here.

shadow explorer screenshot

To protect your computer from file encryption ransomware such as this, use reputable antivirus and anti-spyware programs. As an extra protection method, you can use programs called HitmanPro.Alert and Malwarebytes Anti-Ransomware, which artificially implant group policy objects into the registry to block rogue programs such as Unlock92 ransomware.)

HitmanPro.Alert CryptoGuard - detects encryption of files and neutralises any attempts without need for user-intervention:

hitmanproalert ransomware prevention application

Malwarebytes Anti-Ransomware Beta uses advanced proactive technology that monitors ransomware activity and terminates it immediately - before reaching users' files:

malwarebytes anti-ransomware

  • The best way to avoid damage from ransomware infections is to maintain regular up-to-date backups. More information on online backup solutions and data recovery software Here.

Other tools known to remove Unlock92 ransomware: