Severity scale:  
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System ransomware. How to remove? (Uninstall guide)

removal by Ugnius Kiguolis - - | Type: Ransomware

System ransomware – a dangerous program that locks personal files by adding .SYSTEM file extension to each of them

Ransom note by System CryptoMix

System ransomware is another version of CryptoMix malware that emerged at the beginning of 2018. The file-encrypting virus uses AES cryptography and .System file extension to make data on the affected system unable to open. After the encryption, _HELP_INSTRUCTION.TXT file with data recovery instructions appears on the computer.

The System virus follows the same ransom-demanding scheme. In the ransom note, criminals provide a few contact email addresses for victims to send their unique ID. Developers of Cryptomix are known for changing contact emails with each new version. This time they use:

  • systempc1@keemail.me
  • systempc18x@protonmail.com
  • hashby@yandex.com
  • ashbyh@yandex.com
  • helen.a@iname.com

Although this virus is rather new, its developers are not slacking. At the beginning of February 2018, cyber security researcher Michael Gillaspie has discovered a second variant of System Cryptomix virus. Although its behavior, including encryption model, ransom note, decryption methods, etc. coincide with the ancestor, for the most part, there's a couple of changes. The new variant now attaches a .SYSTEM file extension, so the encrypted file will now occur as 0D0A516824060636C21EC8BC280FEA12.SYSTEM. Besides, its developers have switched from the above-listed emails to the following: 

  • systemwall@keemail.me
  • systemwall@protonmail.com
  • systemwall@yandex.com
  • systemwall1@yandex.com
  • emily.w@dr.com

Security experts are aware of the true intentions of the System CryptoMix ransomware virus. They will tell how much dollars in Bitcoins victims have to transfer to the specific Bitcoin wallet address in order to obtain a decryptor. However, after receiving the money, they may forget about their side of the deal.

Therefore, we highly recommend not trusting authors of System malware and do not follow their orders provided in the _HELP_INSTRUCTION.TXT file:

Hello!
Attention! All Your data was encrypted!
For specific informartion, please send us an email with Your ID number:
systempc1@keemail.me
systempc18x@protonmail.com
hashby@yandex.com
ashbyh@yandex.com
helen.a@iname.com
Please send email to all email addresses! We will help You as soon as possible!
IMPORTANT: DO NOT USE ANY PUBLIC SOFTWARE! IT MAY DAMAGE YOUR DATA FOREVER!
DECRYPT-ID-[redacted]

After ransomware attack, you should focus on System ransomware removal. Unfortunately, neither the first nor the second variant of this pest can be decrypted for free. It means that the only way to get the unique decryption code is to pay the ransom, which is not recommended due to various reasons. 

Instead of paying the ransom, security experts recommend people to remove System Cryptomix using a reputable malware removal software, such as Reimage or Malwarebytes Anti Malware. Before running the system scan, you should disable the crypto-virus by rebooting the system to Safe Mode (the guide is below).

Keep in mind that it’s not enough to remove System ransomware virus to get access to your files back. Malware removal tools are not capable of restoring corrupted data. Nevertheless, you can restore data from backups or try third-party software. Don’t worry, they cannot damage your data as criminals' threatened.

Volume Shadow Copies, which is one of the helps after ransomware attack can help those whose PC's are infected with the first System ransomware version. The second variant executes the C:\Windows\System32\cmd.exe” /C vssadmin.exe Delete Shadows /All /Quiet command, which deletes all Volume Shadow Copies permanently. Generally, the virus is currently not decryptable.

Spam emails remain the main ransomware distribution strategy

Malicious spam emails with attachments remain are the most common way how file-encrypting viruses spread.[1] Cyber criminals use advanced social engineering tactics to trick people into opening the attachment that contains malware payload.

Thus, people should be extremely careful with received emails from unknown senders. We also recommend opening attached files only if you are 100% that it is sent from a trusted people.

Specialists from the utanvirus.se[2] note that hackers might use other methods as well. They might include malware executable in malicious ads[3] that might be placed on any visited website or present it that it’s an important update or useful program. Thus, before downloading or clicking any content online, you should double-check the information.

Delete System CryptoMix virus from the computer

To remove System CryptoMix entirely, you have to employ malware removal software, such as Reimage, Plumbytes Anti-MalwareWebroot SecureAnywhere AntiVirus or Malwarebytes Anti Malware. The malicious application consists of numerous different files that might be placed on various directories. Additionally, crypto-malware can inject malicious code into the legitimate processes. Thus, only the professional software can help to get rid of the virus safely.

We do not recommend opting for the manual System CryptoMix removal. You might accidentally delete safe system files and leave malicious entries. Therefore, you might suffer from the even bigger damage.

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What to do if failed?
If you failed to remove infection using Reimage, submit a question to our support team and provide as much details as possible.
Reimage is recommended to uninstall System ransomware. Free scanner allows you to check whether your PC is infected or not. If you need to remove malware, you have to purchase the licensed version of Reimage malware removal tool.
More information about this program can be found in Reimage review.
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Manual System virus Removal Guide:

Remove System using Safe Mode with Networking

To delete System ransomware from the PC without any problems, you have to disable malware first:

  • 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 System

    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 System removal.

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

Remove System using System Restore

This method also helps to terminate malware from the computer.

  • 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 System. 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 System removal is performed successfully.

Bonus: Recover your data

Guide which is presented above is supposed to help you remove System from your computer. To recover your encrypted files, we recommend using a detailed guide prepared by 2-spyware.com security experts.

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

Try Data Recovery Pro to restore files with .System extension

Data Recovery Pro is not a professional decryptor. However, it's a helpful tool when you need to restore corrupted data. Thus, some of the encrypted files can be recovered as well.

Windows Previous Versions feature might help after ransomware attack

If System Restore was enabled before ransomware attack, you can copy individual files using Windows Previous Versions feature:

  • Find an encrypted file you need to restore and right-click on it;
  • Select “Properties” and go to “Previous versions” tab;
  • Here, check each of available copies of the file in “Folder versions”. You should select the version you want to recover and click “Restore”.

ShadowExplorer might help for the lucky ones

As we have already pointed out, the first version of the System CryptoMix ransomware usually does not delete Shadow Volume Copies, so this software can help you to rescue files. Unfortunately, you won't be able to recover files encrypted by System ransomware variant two. 

  • Download Shadow Explorer (http://shadowexplorer.com/);
  • 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.

Decryptor for System ransomware is not available yet.

Finally, you should always think about the protection of crypto-ransomwares. In order to protect your computer from System and other ransomwares, use a reputable anti-spyware, such as Reimage, Plumbytes Anti-MalwareWebroot SecureAnywhere AntiVirus or Malwarebytes Anti Malware

About the author

Ugnius Kiguolis
Ugnius Kiguolis - The mastermind

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References