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Crypton ransomware virus. How to delete? (Removal tutorial)

removal by Lucia Danes - - | Type: Ransomware

Crypton – ransomware virus that returned into the wild several days ago

Crypton ransomware virus

Crypton virus is a dangerous ransomware that is targeting Russian, Portuguese and English-speaking computer users. After noticing that your your files cannot be opened and and that they are labeled with specific extensions, you can guess that the ransomware is on your computer. The most popular extension used by Crypton ransomware is “[file_name].id-[victim’s ID]_steaveiwalker@india.com_”. However, having in mind that this virus keeps updating since 2016, you can also see other extensions added to your data as well.

In addition to the encryption procedure, the virus changes computer's desktop background with its ransom note called ”COMO_ABRIR_ARQUIVOS.txt.” Its copies can appear in every single folder on victim's computer. The ransom message typically informs victims about steps that are required to recover encrypted files. From now on, Crypton removal becomes a must-to-do task because new files can also be encrypted if it is kept on the system.

According to the developer of this ransomware, victims must pay 1 Bitcoin if they want to get the decryption key and restore their files. Cybercriminals trick people into paying them by saying that these files are encrypted with high-risk ransomware. However, note that after you fall for their commands and send the ransom, these hackers can vanish away. Keep in mind that there is no guarantee that you will get the decryption key from cyber criminals after making a payment.

To protect yourself, you should discuss no details with hackers and remove Crypton from your computer system with the help of Reimage or similar security software. While you may be convinced that keeping this virus on the system cannot change anything because your files are already encrypted, we must warn you that ransomware may start another round and encrypt another portion of your files. Yet, you can avoid this issue by eliminating this infection without any delay.

Unfortunately, at the moment there are no official tools that could help you restore files encrypted by Crypton. You can try restoring them from backup or by using third party software that is mentioned below this article. To protect yourself in the future, you need to take care of backups of your most important files and also launch occasional system scans to make sure that your system is virus-free.

Fake software updates and spam emails are used for the distribution of malware

Unsafe download websites, file hosting and sharing sites, and fake software updates, to name the few, are methods used for spreading ransomware around the globe. Also, hackers often employ spam bots to distribute millions of phishing emails that contain malicious attachments. DO NOT open these attachments as malicious payload will be executed straight away. To be particularly safe, delete spam emails without even opening them.

Another helpful habit keeping your software up-to-date. Cybercriminals often use software vulnerabilities to inject their malicious programs into weakened machines. Software developers often release patches that fix these bugs and prevent hackers from using exploit kits.

If your computer is infected with potentially unwanted programs or you often visit suspicious websites, you can encounter fake updates which pretend to belong to legitimate software. Be careful, as these pop-ups might seem real. Therefore, we advise you to enable automatic updates or download them from official websites only.  

Finally, don't forget that every computer should be protected by a certified anti-spyware software with a real-time scanning function. 

Remove Crypton from your computer now

The Crypton virus is a malicious program and needs to be eliminated from your computer as soon as possible. You should be aware that you can easily infect your computer with other malware. Even after you remove Crypton ransomware, your files will remain encrypted. Nevertheless, you can restore them from a backup, using third-party software or trying a free decryptor from Emsisoft. Always start with malware removal – otherwise decrypted files will get contaminated again.

We recommend you use Reimage, Malwarebytes or Plumbytes Anti-MalwareNorton Internet Security for full Crypton removal. Before you proceed, however, you should enter Safe mode with networking, as explained below (malware can prevent security software from starting). Anti-spyware tools are useful not only for getting rid of malware and PUPs but can also prevent malicious applications from entering your machine in the future.

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Alternative Security Tools
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Crypton ransomware virus screenshot
Crypton claims that all files are encryptedCrypton can show up on the system out of nowhereCrypton ransom noteCrypton can be decrypted with the help of Emsisoft toolCrypton encrypts files with AES encryptionCrypton ransomware relies on Ransomed india email

To remove Crypton virus, follow these steps:

Eliminate Crypton using Safe Mode with Networking

Enter Safe mode with networking by following these steps:

  • Step 1: Restart your computer in Safe Mode with Networking

    Windows 7 / Vista / XP
    1. Go to Start Shutdown Restart OK.
    2. As soon as your computer starts, start pressing F8 key repeatedly before the Windows logo shows up.
    3. Choose Safe Mode with Networking from the list Choose 'Safe Mode with Networking' option

    Windows 10 / Windows 8
    1. Click on the Power button at the Windows login screen, and then press and hold Shift key on your keyboard. Then click Restart.
    2. Then select Troubleshoot Advanced options Startup Settings and click Restart.
    3. Once your computer starts, select Enable Safe Mode with Networking from the list of options in Startup Settings. Choose 'Enable Safe Mode with Networking' option
  • Step 2: Remove Crypton

    Sign in to your account and launch any Internet browser. Download a legitimate anti-malware software, for instance, Reimage. Make sure you update it to the latest version and then run a full system scan with it to detect and eliminate all malicious components of the ransomware to remove Crypton completely.

If your ransomware does not allow you to access Safe Mode with Networking, please follow the instructions provided below.

Eliminate Crypton using System Restore

Eliminate the virus using System Restore:

  • Step 1: Restart your computer in Safe Mode with Command Prompt

    Windows 7 / Vista / XP
    1. Go to Start Shutdown Restart OK.
    2. As soon as your computer starts, start pressing F8 key repeatedly before the Windows logo shows up.
    3. Choose Command Prompt from the list Choose 'Safe Mode with Command Prompt' option

    Windows 10 / Windows 8
    1. Click on the Power button at the Windows login screen, and then press and hold Shift key on your keyboard. Then click Restart.
    2. Then select Troubleshoot Advanced options Startup Settings and click Restart.
    3. Once your computer starts, select Enable Safe Mode with Command Prompt from the list of options in Startup Settings. Choose 'Enable Safe Mode with Command Prompt' option
  • Step 2: Perform a system restore to recover files and settings
    1. When the Command Prompt window appears, type in cd restore and press Enter. Type 'cd restore' without quotes and hit 'Enter'
    2. Then type rstrui.exe and hit Enter.. Type 'rstrui.exe' without quotes and hit 'Enter'
    3. In a new window that shows up, click the Next button and choose a restore point that was created before the infiltration of Crypton and then click on the Next button again. When 'System Restore' wizard comes up, click 'Next'. Choose a preferable restore point and click 'Next'
    4. To start system restore, click Yes. Hit 'Yes' and start system restore
    After restoring the computer system to an antecedent date, install and check your computer with Reimage to uncover any remains of Crypton.

Bonus: Restore your files

Using the tutorial provided above you should be able to eliminate Crypton from the infected device. novirus.uk team has also prepared an in-depth data recovery guide which you will also find above.

We highly discourage users paying ransom. Instead, use the published decryptor or check third-party apps if it does not work for you. As already mentioned, the safest way to recover data is by restoring it from a backup.

There are a couple of methods you can apply to recover data encrypted by Crypton:

Data Recovery Pro

  • Download Data Recovery Pro;
  • Install Data Recovery on your computer following the steps indicated in the software’s Setup;
  • Run the program to scan your device for the data encrypted by Crypton ransomware;
  • Recover the data.

Windows Previous Versions feature

  • Right-click on the encrypted document you want to recover;
  • Click “Properties” and navigate to “Previous versions” tab;
  • In the “Folder versions” section look for the available file copies. Choose the desired version and press “Restore”.


  • Download Shadow Explorer (http://shadowexplorer.com/);
  • Install Shadow Explorer on your computer following the instructions in the software’s Setup Wizard;
  • Run the program. Navigate to the menu on the top-left corner and select a disk containing your encrypted files. Look through the available folders;
  • When you find the folder you want to recover, right-click it and select “Export”. Also, choose where the recovered data will be stored.

Use Emsisoft decryptor tool for file decryption

The decryptor by Emsisoft and virus researcher Fabian Wosar is available to download from here

About the author

Lucia Danes
Lucia Danes - Virus researcher

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Source: https://www.2-spyware.com/remove-crypton-ransomware-virus.html

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