Unlock92 Ransomware - How To Remove?

 

The 30th of June became the marked date when the Unlock92 ransomware emerged from a virus production machine. It mostly targets Russian-speaking countries. Why is the name of this ransomware so straightforward? Probably because the contact, provided in the letter of demands, suggest to contact unlock92@india(.)com email address. Actually, the constructed message resembled the one, provided by Kozy.Jozy virus. Unfortunately, Shadow Volume Copies are said to be potentially threaten by Unlock92 ransomware. Also, this virus design a 64-symbol hexademical passwords for every infected individual.

About Unlock92 ransomware

Unlock92 virus has been regarded to be a little different from other ransomware viruses. It chose to proceed with the AES algorithm for encryption of the files, but also employs the powerful RSA-2048 encryption code, which can be found in the file called Key.bin. This file is created in every folder. Furthermore, Unlock92 ransomware creates a file called qqq.jpg that stands as the ransom note for victims. It looks like this in Russian:

ВАШИ ФАЙЛЫ БЫЛИ ЗАШИФРОВАНЫ!
Если вы хотите их восстановить то отправьте один из пострадавших файлов и файл Key.bin (из любой папки с зашифрованными файлами) на e-mail: UNLOCK92@INDIA.COM Если вы не получили ответа в течение суток то скачайте с сайта https://www.torproject.org/download/download-easy.html.en TOR 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!

Translation of this message:

‘Your files have been encrypted!
If you want to restore them, send one of the affected files and Key.bin file (from any folder with encrypted files) to e-mai1: UNLOCK92@INDIA.COM If you have not received a response within a day then download from the site [homepage for the TOR Browser] TOR browser and use it to open the website [site on the TOR network] – there will be indicated the current mailbox.
Attempts to decrypt the files independently will lead to irreparable damages!’

But before Unlock92 virus can start claiming and demanding, it has to encrypt files. It proceeds with the detailed scan of your computer system and tries to determine which files should be corrupted. Then, virus starts to encrypt the selected data with the AES algorithm. Text files might be the first to go as it has been reported that Unlock92 targets them firstly. However, the ransomware can encode various types of files: CD, .LDF, .MDF, .MAX, .DBF, .EPF, .1CD, .MD, .DB, .PDF, .PPT, .XLS, .DOC, .ARJ, .TAR, .7Z, .RAR, .ZIP, .TIF, .JPG, .AI, .BMP, .PNG, .CDR, .PSD, .JPEG, .DOCX, .XLSX, .PPTX, .ACCDB, .MDB, .RTF, .ODT, .ODS, .ODB, .ODG. The unavailable pieces of data will have an extension, appended to them: .CRRRT.

How to Decrypt Files Encrypted by Unlock92 Ransomware?

Hackers will ask to contact them via the provided email address. They will demand people to send one encrypted file, together with the Key.bin. All in order to give you an unique decryption key. The amount of ransom is not identified but our guess is that the sum of money differs for individual victims. We do not recommend to pay the ransom: you might not even get your files back and spend money completely without any purpose. Usually, ransomware infections like Unlock92 virus demands 1 BITCOIN (about 670 dollars). Our advice would be to store personal data in backup storages for the future. Now you can use the free Unlock92Decrypter application by Michael Gillespie that helps victims to revive their files.

How is Unlock92 Ransomware Spread?

Unlock92 virus might have been distributed via infected spam emails. These letters usually contain attachments that might implant malicious codes into your computer system. Avoid opening and downloading the content that is distributed through your email accounts as they are not enough secured. Also, social media sites might also have something to do with the distribution of Unlock92 ransomware. Do not open random entries that you might have been tagged at. Develop a more immune browsing habits as infections are lurking on every corner. To make your life a little easier, security researchers have created such anti-malware tools: Reimage, SpyHunter and Hitman. They will efficiently take care of your intruder.

Update of the 13th of March, 2017. Unlock92 ransomware has emerged with a slightly different sample: now, instead of the old ransom note, it features a file called READ_ME_!.txt.

How to recover Unlock92 ransomware encrypted files and remove the virus

Step 1. Restore system into last known good state using system restore

1. Reboot your computer to Safe Mode with Command Prompt:


for Windows 7 / Vista/ XP
  • Start Shutdown RestartOK.
  • Press F8 key repeatedly until Advanced Boot Options window appears.
  • Choose Safe Mode with Command Prompt. Windows 7 enter safe mode

for Windows 8 / 10
  • Press Power at Windows login screen. Then press and hold Shift key and click Restart. Windows 8-10 restart to safe mode
  • Choose TroubleshootAdvanced OptionsStartup Settings and click Restart.
  • When it loads, select Enable Safe Mode with Command Prompt from the list of Startup Settings. Windows 8-10 enter safe mode

2.Restore System files and settings.

  • When Command Prompt mode loads, enter cd restore and press Enter.
  • Then enter rstrui.exe and press Enter again. CMD commands
  • Click “Next” in the windows that appeared. Restore point img1
  • Select one of the Restore Points that are available before Unlock92 virus has infiltrated to your system and then click “Next”. Restore point img2
  • To start System restore click “Yes”. Restore point img3

Step 2. Complete removal of Unlock92 ransomware

After restoring your system, it is recommended to scan your computer with an anti-malware program, like Reimage and remove all malicious files related to Unlock92 virus. You can check other tools here.


Step 3. Restore Unlock92 ransomware affected files using Shadow Volume Copies

If you do not use System Restore option on your operating system, there is a chance to use shadow copy snapshots. They store copies of your files that point of time when the system restore snapshot was created. Usually Unlock92 virus tries to delete all possible Shadow Volume Copies, so this methods may not work on all computers. However, it may fail to do so.

Shadow Volume Copies are only available with Windows XP Service Pack 2, Windows Vista, Windows 7, and Windows 8. There are two ways to retrieve your files via Shadow Volume Copy. You can do it using native Windows Previous Versions or via Shadow Explorer.

a) Native Windows Previous Versions

Right-click on an encrypted file and select PropertiesPrevious versions tab. Now you will see all available copies of that particular file and the time when it was stored in a Shadow Volume Copy. Choose the version of the file you want to retrieve and click Copy if you want to save it to some directory of your own, or Restore if you want to replace existing, encrypted file. If you want to see the content of file first, just click Open.


Previous version
b) Shadow Explorer

It is a program that can be found online for free. You can download either a full or a portable version of Shadow Explorer. Open the program. On the left top corner select the drive where the file you are looking for is a stored. You will see all folders on that drive. To retrieve a whole folder, right-click on it and select “Export”. Then choose where you want it to be stored.
Shadow explorer

Step 4. Use Data Recovery programs to recover Unlock92 ransomware encrypted files

There are several data recovery programs that might recover encrypted files as well. This does not work in all cases but you can try this:

  • We suggest using another PC and connect the infected hard drive as slave. It is still possible to do this on infected PC though.
  • Download Data Recovery Pro (commercial)
  • Install and scan for recently deleted files. Data Recovery Pro

Note: In many cases it is impossible to restore data files affected by modern ransomware. Thus I recommend using decent cloud backup software as precaution. We recommend checking out Carbonite, BackBlaze, CrashPlan or Mozy Home.

       
 

About the author

 - Main Editor
I have started 2-viruses.com in 2007 after wanting to be more or less independent from single security program maker. Since then, we kept working on this site to make internet better and safer place to use.
 
July 4, 2016 06:57, March 13, 2017 02:46
   
 

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