AutoEncryptor Ransomware - How To Remove?

 

AutoEncryptor ransom-demanding virus is an especially avaricious sample. While other ransomware infections demand 1 or 2 bitcoins (some variants fall out of this range, but the most common versions fit into it), AutoEncryptor indicates that it requires a fee of 10 000 BTC. Either developers of this ransomware sample have very little knowledge about the value of bitcoins or they are naive enough to assume that their victims will have a sum of 11769800 US dollars just laying around. .ENCR extension is the mark that AutoEncryptor virus chooses to tag on each distorted file. AutoEncryptor crypto-virus will choose its victims not only from English-speaking users, but from people of Slovakia and Czech Republic.

Changes that AutoEncryptor ransomware inflicts on its victims

AutoEncryptor crypto-virus explains the way files are encrypted: and the technique did not surprise us. Like many similar infections around, currently active or not, AutoEncryptor sample prefers to use a double encryption to complicate a free decryption option. First, once AutoEncryptor manages to insert itself into a device, the virus will generate an original AES-256 encryption key for each victim. Then, once the files are spoiled, ransomware will take the other key generated in the process (key for decryption) and encrypt it with RSA-2048 cipher. This is a very common procedure that hackers adopt as their main strategy.

AutoEncryptor ransomware

AutoEncryptor virus uses a table, called FileLocker to display its demands. There are four different sections that victims are expected to familiarize with before deciding on how to proceed. The recommended Step 1 is to purchase bitcoins and send them to the controllers of AutoEncryptor infection. However, only wealthy people could even consider sending the required sum of bitcoins. Others will definitely find 10 000 BTC as an unreachable ransom to pay.

AutoEncryptor ransomware Step 1

Even though there is almost no chance that victims will pay the demanded sum, hackers introduce two actions that should follow a process of making a successful transaction to a bitcoin wallet. They are required to inform victims of the exact sum they paid and also, send a unique encrypted key. It is presumably displayed in the Step 2. These details are to be send to a babis@mfcr.cz email address. It might be a coincidence, but one of the targeted countries, Czech Republic, has a political figure with the last name of Babis.

AutoEncryptor ransomware Step 2

The last section, Step 3, is to be implemented after hackers respond to the email letter that victims have send to babis@mfcr.cz address. If the payment satisfies crooks, they will supposedly provide a key for decryption. This combination is supposed to be inserted into the blank green field. After that, files with .ENCR extension should be accessible once again. However, we do not trust hackers and believing that they will actually provide you with a legitimate key for decryption is more than naive. After crooks realize that victims have already paid the demanded price, they might simply ignore the letter.

AutoEncryptor ransomware Step 3

Decipher your files that AutoEncryptor ransomware encoded

Currently, there is no tool that would recover files that are appended with .ENCR extension. This variant is yet to receive a solution. We assume that even if people become infected with this sample, paying the ransom won’t even be an option. Where would ordinary citizens get this kind of money? Are the creators of AutoEncryptor virus targeting mainly the wealthy part of society? These questions remain unanswered. We can offer victims that they try to restore files while using methods that have been recognized to recover them. At the end of this article, you will find recommendations that should help you recover files.

If you have stored your files in backup storages, the process of file-decryption should not give you a headache. First, you should copy all of the files that this ransomware encrypted: place them in an USB. Then, please get rid of AutoEncryptor virus. This can be either done manually, or with anti-malware applications like Spyhunter, Plumbytes and Malwarebytes. Then, once your system is clean, you can simply retrieve files from the backup storage.

AutoEncryptor ransomware: how does it spread?

AutoEncryptor crypto-virus will presumably exploit the usual opportunities to infect computer devices. It could be that malicious spam campaigns are designed to transmit AutoEncryptor.exe file. Do not feel eager to download executables from unknown sources, especially if it happens to be an email letter from an unrecognized sender. Additionally, vulnerable websites, even legitimate ones, could be affected by exploit kits. This means that without your knowledge, malicious executables could be inserted.

How to recover AutoEncryptor 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 AutoEncryptor 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 AutoEncryptor 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 AutoEncryptor virus. You can check other tools here.


Step 3. Restore AutoEncryptor 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 AutoEncryptor 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 AutoEncryptor 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.
 
April 14, 2017 06:37, April 14, 2017 06:37
 
   
 

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