Crypt12 ransomware / virus (Removal Guide) - Dec 2017 update

Crypt12 virus Removal Guide

What is Crypt12 ransomware virus?

Crypt12 ransomware is decryptable

Background picture by Crypt12 ransomware

Crypt12 emerged on the 12th of August operating like a file-encrypting virus.[1] Malware is designed to add filename.extension=id=email.crypt12 file extension to the targeted files. However, cyber security specialists managed to crack ransomware’s code and offered a free decryption software.

Crypt12 is written in .NET[2] programming language and is executed from the crypt12.exe file. Typically, ransomware attacks devices via RDP.[3] On the affected device it not only encrypts files but also replaces desktop's picture.

The new background image informs about encrypted data and provides the contact email message. In order to get back access to the files, victims have to send an email to and wait for the data recovery instructions.

However, doing that is not recommended or needed. Users can restore files using free and safe decryption software. But before data recovery, you have to remove Crypt12 from the computer. While ransomware resides on the system, your files might be encrypted every time you turn on the computer.

Therefore, you should obtain reputable malware removal tool and go for automatic Crypt12 removal. We suggest completing this task with FortectIntego. The instructions how to install and run full system scan are provided at the end of the article.

New version of Crypt12 emerged on November

Cyber criminals released a new variant of Cryp12 at the end of autumn 2017. However, this variant also appends .crypt12 file extension to the targeted data and gives the same data recovery instructions. However, this time crooks leave another contact email address – or

Malware is installed in PDB: C:\Projects\crypt12\crypt12\obj\Release\KristinaCS.pdb directory and ran from KristinaCS.exe. Due to the name of executable, this version of the virus is also known as Kristina ransomware virus.

However, this variant is also decryptable. Thus, you should remove Crypt12 from the computer and download free decryption software without hesitation.

The image of Crypt12 ransomware virusCrypt12 ransomware virus asks victims to contact them in order to get decryption key.

Malware spreads via insecure RDPs

Malware is expected to spread and attack devices using Remote Desktop Protocol (RDP).[4] However, crooks might also take advantage of the most popular ransomware distribution method – malspam. Thus, you should be careful with suspicious or unexpected emails that show up in your inbox and do not open any content provided in them.

Crypt12 has been spotted affected several devices in the United States. However, it might continue spreading in European countries, including Norway,[5] Hungary, and the UK.

Crypt12 ransomware removal and data recovery.

Crypt12 removal is performed using reputable malware elimination software only. We recommend installing FortectIntego or SpyHunter 5Combo Cleaner and let one of these tools to wipe out malicious components from the system.If you cannot install or run security software, please check the instructions below. They will help to disable the virus and get rid of it.

Once you remove Crypt12, you can download the official decryption software from here. However, if some of the files are still corruted, you should check alternative recovery methods presented below.

do it now!
Fortect Happiness
Intego Happiness
Compatible with Microsoft Windows Compatible with macOS
What to do if failed?
If you failed to fix virus damage using Fortect Intego, submit a question to our support team and provide as much details as possible.
Fortect Intego has a free limited scanner. Fortect Intego offers more through scan when you purchase its full version. When free scanner detects issues, you can fix them using free manual repairs or you can decide to purchase the full version in order to fix them automatically.
Alternative Software
Different software has a different purpose. If you didn’t succeed in fixing corrupted files with Fortect, try running SpyHunter 5.
Alternative Software
Different software has a different purpose. If you didn’t succeed in fixing corrupted files with Intego, try running Combo Cleaner.

Getting rid of Crypt12 virus. Follow these steps

Manual removal using Safe Mode

If Crypt12 prevents from installing malware removal software, please follow these steps to disable malware first.

Important! →
Manual removal guide might be too complicated for regular computer users. It requires advanced IT knowledge to be performed correctly (if vital system files are removed or damaged, it might result in full Windows compromise), and it also might take hours to complete. Therefore, we highly advise using the automatic method provided above instead.

Step 1. Access Safe Mode with Networking

Manual malware removal should be best performed in the Safe Mode environment. 

Windows 7 / Vista / XP
  1. Click Start > Shutdown > Restart > OK.
  2. When your computer becomes active, start pressing F8 button (if that does not work, try F2, F12, Del, etc. – it all depends on your motherboard model) multiple times until you see the Advanced Boot Options window.
  3. Select Safe Mode with Networking from the list. Windows 7/XP
Windows 10 / Windows 8
  1. Right-click on Start button and select Settings.
  2. Scroll down to pick Update & Security.
    Update and security
  3. On the left side of the window, pick Recovery.
  4. Now scroll down to find Advanced Startup section.
  5. Click Restart now.
  6. Select Troubleshoot. Choose an option
  7. Go to Advanced options. Advanced options
  8. Select Startup Settings. Startup settings
  9. Press Restart.
  10. Now press 5 or click 5) Enable Safe Mode with Networking. Enable safe mode

Step 2. Shut down suspicious processes

Windows Task Manager is a useful tool that shows all the processes running in the background. If malware is running a process, you need to shut it down:

  1. Press Ctrl + Shift + Esc on your keyboard to open Windows Task Manager.
  2. Click on More details.
    Open task manager
  3. Scroll down to Background processes section, and look for anything suspicious.
  4. Right-click and select Open file location.
    Open file location
  5. Go back to the process, right-click and pick End Task.
    End task
  6. Delete the contents of the malicious folder.

Step 3. Check program Startup

  1. Press Ctrl + Shift + Esc on your keyboard to open Windows Task Manager.
  2. Go to Startup tab.
  3. Right-click on the suspicious program and pick Disable.

Step 4. Delete virus files

Malware-related files can be found in various places within your computer. Here are instructions that could help you find them:

  1. Type in Disk Cleanup in Windows search and press Enter.
    Disk cleanup
  2. Select the drive you want to clean (C: is your main drive by default and is likely to be the one that has malicious files in).
  3. Scroll through the Files to delete list and select the following:

    Temporary Internet Files
    Recycle Bin
    Temporary files

  4. Pick Clean up system files.
    Delete temp files
  5. You can also look for other malicious files hidden in the following folders (type these entries in Windows Search and press Enter):


After you are finished, reboot the PC in normal mode.

Remove Crypt12 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 Crypt12. 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 FortectIntego and make sure that Crypt12 removal is performed successfully.

Bonus: Recover your data

Guide which is presented above is supposed to help you remove Crypt12 from your computer. To recover your encrypted files, we recommend using a detailed guide prepared by security experts.

If your files are encrypted by Crypt12, you can use several methods to restore them:

Data Recovery Pro – professional software that can help to restore files

Data Recovery Pro helps to restore files after system wreckage or accidental deletion. However, it might help after ransomware attack too.

  • Download Data Recovery Pro;
  • Follow the steps of Data Recovery Setup and install the program on your computer;
  • Launch it and scan your computer for files encrypted by Crypt12 ransomware;
  • Restore them.

Windows Previous Versions feature

If System Restore has been enabled before the Crypt12 attack, you can access individual files by following the steps below: 

  • 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”.

Try ShadowExplorer for data recovery

If malware failed to delete Shadow Volume Copies of the targeted files, this tool can help you to get back your files without paying the ransom.

  • 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.

Crypt12 decryptor

You can download a free and safe to use Cryp12 Decrypter from this link.

Finally, you should always think about the protection of crypto-ransomwares. In order to protect your computer from Crypt12 and other ransomwares, use a reputable anti-spyware, such as FortectIntego, SpyHunter 5Combo Cleaner or Malwarebytes

How to prevent from getting ransomware

Protect your privacy – employ a VPN

There are several ways how to make your online time more private – you can access an incognito tab. However, there is no secret that even in this mode, you are tracked for advertising purposes. There is a way to add an extra layer of protection and create a completely anonymous web browsing practice with the help of Private Internet Access VPN. This software reroutes traffic through different servers, thus leaving your IP address and geolocation in disguise. Besides, it is based on a strict no-log policy, meaning that no data will be recorded, leaked, and available for both first and third parties. The combination of a secure web browser and Private Internet Access VPN will let you browse the Internet without a feeling of being spied or targeted by criminals. 

No backups? No problem. Use a data recovery tool

If you wonder how data loss can occur, you should not look any further for answers – human errors, malware attacks, hardware failures, power cuts, natural disasters, or even simple negligence. In some cases, lost files are extremely important, and many straight out panic when such an unfortunate course of events happen. Due to this, you should always ensure that you prepare proper data backups on a regular basis.

If you were caught by surprise and did not have any backups to restore your files from, not everything is lost. Data Recovery Pro is one of the leading file recovery solutions you can find on the market – it is likely to restore even lost emails or data located on an external device.

About the author
Lucia Danes
Lucia Danes - Virus researcher

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