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Enigma ransomware virus. How to remove? (Uninstall guide)

removal by Gabriel E. Hall - - | Type: Ransomware

Enigma virus was detected at the end of April 2016. It is obvious that it uses a name similar to a well-known software developer called Enigma Software. However, we would like to add some clarity and warn you that the company and its virus remover SpyHunter is NOT related to Enigma ransomware in any way. Most probably, the name of this virus was selected according to a first cryptographic machine called “Enigma machine.” However, there is no guarantee that people behind Enigma ransomware are not seeking to manipulate the name of the reputable anti-spyware maker and discredit its product. If you are infected with this cyber threat, you can always rely on Reimage and use it for malicious files’ removal.

How does Enigma virus operate?

Enigma virus, which falls into ransomware category, seems to be hostile to the Russian-speaking computer users. Once installed on the computer system, it checks what is the default language of the computer. If it is Russian, Enigma malware starts its activities right away. If it’s not, it simply terminates itself. Once it determines that the computer user speaks Russian language, it starts scanning the entire computer system and searches for audio, video files, images, documents, and basically all types of victim’s files. Then it encrypts them using AES crypto-algorithm. Once it encrypts a file, it also adds .enigma extension to the filename. In the beginning of October 2016, new versions of Enigma virus has been spotted, and these add a different file extension to encrypted files – .1txt file extension. Once Enigma ransomware finishes with the encryption process, it launches enigma.hta file, which opens up in Internet Explorer. This file is the so-called ransom note, which informs the user about what has happened to the computer and what needs to be done in order to recover the encrypted data.
Enigma ransomware encrypts files using AES encryption algorithm

Questions about Enigma ransomware virus

The ransom note is written in the Russian language, and it instructs the victim to install the Tor Browser, enter a particular website and upload .RSA file that came with the virus. When the victim uploads this file, he enters an Internet site that introduces him/her with the cost of the decryption key that is required for data decryption. An interesting fact is that Enigma virus provides a chat box to speak with the cyber criminals directly. However, no matter how valuable your files are, do not rush to pay the ransom (crooks ask for 0.4273 BTC, which is approximately 200 USD).

The developers of this malware have left a flaw in this virus – if the user has enabled Windows UAC on the computer, the virus will show a “User Account Control” prompt, which gives the user two options – either agree or disagree on allowing the “following program” make changes on the computer. In case the victim clicks No, the virus encrypts files but leaves Volume Shadow Copies untouched, and these copies can be used for data recovery. Therefore, if you have clicked “No,” all you need to do now is to remove Enigma ransomware. If you are not a skillful computer user, we do not recommend you to deal with this virus on your own. You can quickly eliminate this virus with a help of anti-malware software like Reimage.

How did Enigma ransomware infect your computer?

Ransomware viruses mostly spread via spam emails. Cyber criminals usually send mass emails including malicious attachments, so we advise you to stay away from emails that are sent by people you do not know in person. If you open such malicious email attachment, Enigma virus will be immediately installed on your computer system. We have discovered that Enigma ransomware arrives in a form of HTML document, which, once the victim opens it, launches in default Internet browser and executes a JavaScript file. Then it drops Свидетельство о регистрации частного предприятия.js file on victim’s computer system and asks the victim to open it. If the victim opens this file, the malware starts the encryption process. However, downloading malicious email attachments is not the only way to infect your PC with Enigma ransomware. Crooks also spread this virus via malvertising, so you should stay away from untrustworthy download websites, and especially from suspicious pop-up ads that suggest you to update Adobe Flash Player, Adobe Acrobat or other well-known programs. These bogus updates usually include malicious attachments. If your computer has been affected by Enigma malware already, do not waste any time and eliminate it. To find out how to remove this virus and recover your files, follow Enigma removal guide (given below).

UPDATED on October 11: It seems that scammers use even more advanced techniques to distribute ransomware, and in this case, it has been spotted that such malicious software can be dropped on the computer after one of the most infamous adware-type programs installs it. Adware programs suspected for malware distribution are these: OpenCandy and Dealphy. 

Uninstall Enigma ransomware and decrypt your files

As we have mentioned on page 1, you can delete Enigma virus with an automatic malware removal software (for instance, Reimage). For users who do not want to obtain a malware removal tool, we have prepared a manual Enigma removal tutorial. You can find it below this article. Make sure you completely remove this computer infection before you attempt to recover your files using Volume Shadow Copies.

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To remove Enigma virus, follow these steps:

Remove Enigma using Safe Mode with Networking

  • Step 1: Reboot your computer to Safe Mode with Networking

    Windows 7 / Vista / XP
    1. Click Start Shutdown Restart OK.
    2. When your computer becomes active, start pressing F8 multiple times until you see the Advanced Boot Options window.
    3. Select Safe Mode with Networking from the list Select 'Safe Mode with Networking'

    Windows 10 / Windows 8
    1. Press the Power button at the Windows login screen. Now press and hold Shift, which is on your keyboard, and click Restart..
    2. Now select Troubleshoot Advanced options Startup Settings and finally press Restart.
    3. Once your computer becomes active, select Enable Safe Mode with Networking in Startup Settings window. Select 'Enable Safe Mode with Networking'
  • Step 2: Remove Enigma

    Log in to your infected account and start the browser. Download Reimage or other legitimate anti-spyware program. Update it before a full system scan and remove malicious files that belong to your ransomware and complete Enigma removal.

If your ransomware is blocking Safe Mode with Networking, try further method.

Remove Enigma using System Restore

  • Step 1: Reboot your computer to Safe Mode with Command Prompt

    Windows 7 / Vista / XP
    1. Click Start Shutdown Restart OK.
    2. When your computer becomes active, start pressing F8 multiple times until you see the Advanced Boot Options window.
    3. Select Command Prompt from the list Select 'Safe Mode with Command Prompt'

    Windows 10 / Windows 8
    1. Press the Power button at the Windows login screen. Now press and hold Shift, which is on your keyboard, and click Restart..
    2. Now select Troubleshoot Advanced options Startup Settings and finally press Restart.
    3. Once your computer becomes active, select Enable Safe Mode with Command Prompt in Startup Settings window. Select 'Enable Safe Mode with Command Prompt'
  • Step 2: Restore your system files and settings
    1. Once the Command Prompt window shows up, enter cd restore and click Enter. Enter 'cd restore' without quotes and press 'Enter'
    2. Now type rstrui.exe and press Enter again.. Enter 'rstrui.exe' without quotes and press 'Enter'
    3. When a new window shows up, click Next and select your restore point that is prior the infiltration of Enigma. After doing that, click Next. When 'System Restore' window shows up, select 'Next' Select your restore point and click 'Next'
    4. Now click Yes to start system restore. Click 'Yes' and start system restore
    Once you restore your system to a previous date, download and scan your computer with Reimage and make sure that Enigma removal is performed successfully.

Bonus: Recover your data

Guide which is presented above is supposed to help you remove Enigma from your computer. To recover your encrypted files, we recommend using a detailed guide prepared by security experts.

If your files have been locked by ransomware virus, do not rush to pay up. Ransomware are humans, and they make mistakes, too, and it would simply be wrong not to take advantage of these mistakes. There is a slight chance that you can recover your files from Volume Shadow Copies, so remove Enigma malware first and then follow instructions provided below:

If your files are encrypted by Enigma, you can use several methods to restore them:

Recover encrypted data using ShadowExplorer

If you’re lucky, the virus hasn’t deleted Volume Shadow Copies, which are essential for those who wish to restore their precious files charge-free. To find out if there are any remains of these copies, follow these instructions:

  • Download Shadow Explorer (;
  • Follow a Shadow Explorer Setup Wizard and install this application on your computer;
  • Launch the program and go through the drop down menu on the top left corner to select the disk of your encrypted data. Check what folders are there;
  • Right-click on the folder you want to restore and select “Export”. You can also select where you want it to be stored.

About the author

Gabriel E. Hall
Gabriel E. Hall - Passionate web researcher

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