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Crypto-Blocker ransomware virus. How to remove? (Uninstall guide)

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

Crypto-Blocker ransomware is blackmailing people and threatening to damage their computers

Crypto-Blocker is a new file-encrypting virus that uses AES[1] ciphers to make files on the targeted computer inaccessible. Malware appends .corrupted file extension to encrypted files and delivers a ransom note on the lock screen. The ransom-demanding message informs about necessity to pay 10 euros, dollars or pounds within 5 hours. Otherwise, affected computer might crash. However, if you see this threatening message, you should not panic and focus on Crypto-Blocker removal. Cyber criminals often use psychological terror to make people pay the ransom. Though, they usually are unable to damage the device or delete encrypted files. However, you should not waste your time and employ professional malware removal program. We suggest scanning your device with Reimage and remove Crypto-Blocker with the help of it.

Ransom note delivered by Crypto-Blocker

In the ransom note, developers of the Crypto-Blocker ransomware presents themselves as the “hacker company.” These shady people use a vivid language to scare victims. The threatening message informs that if users want to keep their computers “alive” they need to pay 10 euros, dollars or pounds. However, hackers are understanding and allow victims to choose other currency if they need to pay the ransom. Indeed, it’s unusual behavior because crooks often are strict about ransoms. However, they give a short amount of time to make the payment – only 5 hours. Once victims transfer the money, they receive a code that they need to enter into the box at the bottom of the lock screen. Then, all their files should be decrypted, and Crypto-Blocker deleted from the system. Otherwise, people might face even more problems. According to the crooks, if they will not receive a ransom on time, the affected computer might crash or become “unusable.” Undoubtedly, the payment is small, and you might feel that it’s worth to take the risk. However, we do not recommend spending such money and sponsoring further cyber crimes. Even one dollar is a motivation for cyber criminals to work harder and create bigger illegal projects, and your files might be still left encrypted.

Ransomware distribution and infiltration strategies

It’s unknown what specific technique is used for the circulation of Crypto-Blocker virus. Probably, cyber criminals use traditional ways to spread it, for instance, malicious spam emails, malvertising,[2] fake updates, and exploit kits. Thus, if you want to avoid ransomware, you should take precautions, make data backups and be careful when browsing the Web. First of all, do not rush opening attachments or clicking links (or buttons) provided in the unknown email. Crooks might send emails where they pretend to be from banks, online shops and other reputable companies or organizations, and easily trick you into opening an infected content. Crypto-Blocker might be installed on the device as soon as you click on obfuscated word or pdf document, amazing shopping offer or any online ad. Bear in mind that this content might look legitimate and safe, so you should be critical and do not take any harsh actions. Finally, you should keep your software updated and strengthen your computer’s security with professional security program.

Deleting Crypto-Blocker ransomware virus from the computer

We recommend victims to remove Crypto-Blocker as soon as they receive a ransom demanding message. Virus elimination is completed using a powerful malware removal programs, such as Reimage, Malwarebytes or Plumbytes Anti-MalwareNorton Internet Security. However, you might not be able to install such programs easily. Malware might prevent you from simply downloading it. Thus, you may need to disable the ransomware first by rebooting computer to the Safe Mode with Networking as explained in the instructions below. Then, you should be able to install your chosen software, update it and run a full system scan. Automatic Crypto-Blocker removal assures that all ransomware-related entries are deleted from the computer entirely, and cyber criminals cannot cause any other damage to you.

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To remove Crypto-Blocker virus, follow these steps:

Remove Crypto-Blocker using Safe Mode with Networking

If Crypto-Blocker prevents from installing or accessing malware removal program, reboot your device to the Safe Mode with Networking and then try again.

  • 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 Crypto-Blocker

    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 Crypto-Blocker removal.

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

Remove Crypto-Blocker using System Restore

System Restore is another method to disable the virus. Bear in mind that disabling is not the same as removing malware. Thus, you need to scan the device with security program as well.

  • 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 Crypto-Blocker. 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 Crypto-Blocker removal is performed successfully.

Bonus: Recover your data

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

Currently, the only safe and effective way to restore files is to use data backups. If you do not have them, please try alternative methods presented below. Hopefully, they will help you!

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

Data Recovery Pro tool might help to restore files encrypted by Crypto-Blocker

This professional software is designed to restore accidentally deleted, corrupted and some of the encrypted files. Thus, it might help to rescue your files as well.

  • 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 Crypto-Blocker ransomware;
  • Restore them.

Windows Previous Versions feature might also be useful in data recovery

Windows Previous Versions feature allows traveling back in computer's time and accessing previously saved versions of the encrypted files. However, this method only works if System Restore function has been enabled before ransomware attack, and you need to restore only a few files.

  • 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 to restore files encrypted by Crypto-Blocker ransomware

It's unknown whether malware can delete Shadow Volume Copies of the encrypted files or not. If these files are left on the system, you could use the help of the ShadowExplorer.

  • 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.

Crypto-Blocker Decryptor is not available yet

About the author

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

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