SYSTEM Ransomware

Also Known As: SYSTEM virus
Distribution: Moderate
Damage level: Severe

SYSTEM ransomware removal instructions

What is SYSTEM?

SYSTEM is a new variant of high-risk ransomware called CryptoMix. Once infiltrated, SYSTEM encrypts most stored data. In addition, it renames filenames using the "[32_digit_hexadecimal_number].SYSTEM" pattern. For example, "1.jpg" might be renamed to a filename such as "28B0C4303AC580100F06CA073D3763C4.SYSTEM". From this point, distinguishing files and using them becomes impossible. After successfully encrypting files, SYSTEM creates a text file ("_HELP_INSTRUCTIONS.TXT") and places a copy in every existing folder.

The new text file contains a small amount of information regarding the encryption/decryption. It simply states that files are locked and that the victim must contact SYSTEM's developers (via one of the email addresses provided) to restore them. Although it is currently unknown whether SYSTEM uses symmetric or asymmetric cryptography, the original version (CryptoMix) claimed to use the RSA-2048 (asymmetric) algorithm. In any case, decryption requires a key generated uniquely for each victim. Cyber criminals hide these keys on a remote server and make ransom payment demands for their release. The cost is currently unknown (we did not try to contact these people), however, cyber criminals usually demand $500-$1500 in Bitcoins or another cryptocurrency. Furthermore, these people often ignore victims, once payments are submitted. They cannot be trusted - paying typically gives no positive result. We strongly advise you to ignore all requests to contact these people or pay ransoms. There currently are no tools capable of restoring files encrypted by SYSTEM and the only solution is to restore everything from a backup.

Screenshot of a message encouraging users to pay a ransom to decrypt their compromised data:

SYSTEM decrypt instructions

There are many ransomware-type viruses similar to SYSTEM. The list of examples includes (but is not limited to) Payerranso, LOCKME, MindLost, and GANDCRAB. Research shows that, although these viruses are developed by different cyber criminals, all have identical behavior - they encrypt data and make ransom demands. Ransomware-type viruses typically have just two major differences: 1) size of ransom, and; 2) type of encryption algorithm used. Research also shows that, unfortunately, most employ algorithms that generate unique decryption keys (for instance, AES, RSA, etc.) In most cases, file decryption manually without involvement of developers (contacting these people is not recommended) is impossible. The only possible scenarios are malware being not fully developed or having certain bugs/flaws (e.g., the key is hard-coded, stored locally, or similar). Ransomware-viruses are one of the main reasons for maintaining regular data backups, however, note that you should keep your backup files on a remote server (e.g., Cloud) or unplugged external storage. If not, the backups are encrypted as well.

How did ransomware infect my computer?

To proliferate ransomware, developers typically employ trojans, fake software update tools, third party software download sources (P2P [peer-to-peer] networks, freeware download websites, free file hosting sites, and so on), and spam emails (infectious attachments). In most cases, trojans  open "backdoors" for other high-risk malware to infiltrate. Fake updaters infect the system by exploiting outdated software bugs/flaws or downloading/installing malware rather than updates. Unofficial download sources present viruses as legitimate software. Therefore, users are tricked into downloading and installing malware. Malicious attachments typically come in the format of MS Office documents or JavaScript files. Once opened/executed, these files download and install malware. Ultimately, the main reasons for computer infections are poor knowledge and careless behavior.

How to protect yourself from ransomware infections?

The key to computer safety is caution. Therefore, be careful when browsing the Internet. Never open files received from suspicious email addresses. Delete these emails without reading. Download your applications only from official/trusted sources, preferably using a direct download (third party downloaders/installers often include unwanted/rogue programs). Furthermore, keep installed applications up-to-date, but since criminals proliferate malware via fake updaters, you are advised to use implemented update features or at least tools provided by the official developer. Using a legitimate anti-virus/anti-spyware suite is also paramount.

Text presented in SYSTEM ransomware text file ("_HELP_INSTRUCTIONS.TXT"):


Attention! All Your data was encrypted!

For specific informartion, please send us an email with Your ID number:

Please send email to all email addresses! We will help You as soon as possible!


Screenshot of files encrypted by SYSTEM ("[32_digit_hexadecimal_number].SYSTEM" filename pattern):

Files encrypted by SYSTEM

SYSTEM ransomware removal:

Instant automatic removal of SYSTEM 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 SYSTEM 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":

Windows 10 users: Click the Windows logo and select the Power icon. In the opened menu click "Restart" while holding "Shift" button on your keyboard. In the "choose an option" window click on the "Troubleshoot", next select "Advanced options". In the advanced options menu select "Startup Settings" and click on the "Restart" button. In the following window you should click the "F5" button on your keyboard. This will restart your operating system in safe mode with networking.

windows 10 safe mode with networking

Video showing how to start Windows 10 in "Safe Mode with Networking":

Step 2

Log in to the account infected with the SYSTEM 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 SYSTEM 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 SYSTEM 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 SYSTEM 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 SYSTEM, 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 EasySync CryptoMonitor, which artificially implant group policy objects into the registry to block rogue programs such as SYSTEM ransomware.

Note that Windows 10 Fall Creators Update includes a "Controlled Folder Access" feature that blocks ransomware attempts to encrypt your files. By default, this feature automatically protects files stored in the Documents, Pictures, Videos, Music, Favorites as well as Desktop folders.

Controll Folder Access

Windows 10 users should install this update to protect their data from ransomware attacks. Here is more information on how to get this update and add an additional protection layer from ransomware infections.

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 SYSTEM ransomware: