Home » Cybersecurity » How to remove CryptoCat (Virus Removal Guide)

How to remove CryptoCat (Virus Removal Guide)

CryptoCat virus is classified as ransomware that encrypts the files on your computer, changes the name of the files, and adds .cryptocat to the files it encrypts. In addition, CryptoCat ransomware will leave various note files (.txt, .html) in every folder it encrypts files in and Windows Desktop. The note files contain a ransom note that explains what happened to the files and how to pay a ransom in order to acquire a key to decode the compromised files.

Ransom note

Support e-mail: mls82@hush.ai mls82@bk.ru Your personal files encryption produced on this computer: photos, videos, documents, etc. Encryption was produced using a unique public key RSA-2048 generated for this computer. To decrypt files you need to obtain the private key. The single copy of the private key, which will allow to decrypt the files, located on a secret server on the Internet; the server will destroy the key after 168 hours. After that nobody and never will be able to restore files. To obtain the private key for this computer, you need pay 1.45 Bitcoin (~611 USD) Your Bitcoin address: 1DoW7ifYKAsGvBzCQR5nvdgt3qcc7M15Do You must send 1.45 Bitcoin to the specified address and report it to e-mail customer support. In the letter must specify your Bitcoin address to which the payment was made. The most convenient tool for buying Bitcoins in our opinion is the site: hxxps://localbitcoins.com/ There you can buy Bitcoins in your country in any way you like, including electronic payment systems, credit and debit cards, money orders, and others. Instructions for purchasing Bitcoins on account localbitcoins.com read here: hxxps://localbitcoins.com/guides/how-to-buy-bitcoins Video tutorial detailing on buying Bitcoins using the site localbitcoins.com here: hxxp://www.youtube.com/watch?v=hroPcR-0zSI How to withdraw Bitcoins from account localbitcoins.com to our bitcoin wallet: hxxps://localbitcoins.com/faq#howto_buy Also you can use to buy Bitcoins these sites: hxxps://www.bitstamp.net/ hxxps://www.coinbase.com/ hxxps://www.247exchange.com/

CryptoCat ransomware is usually distributed via malicious spam email attachments, exploit kits, and instant message spam. The ransomware usually employs social engineering in order to trick unsuspecting victims into downloading a file under the guise that it is something it is not. Once the file is manually executed by the user ransomware will begin to advance on the computer system and carry through it’s various functions.

It is not recommended to pay ransomware authors to decrypt your files. Instead you can use programs like Shadow Explorer, PhotoRec, or Recuva to restore corrupted files.

  • Aliases: CryptoCat virus, CryptoCat ransomware

How to remove CryptoCat virus

1. Download and Install Recuva by Pirform.

download recuva

2. Run the program and start the Recuva Wizard.

3. Select All Files and click Next.

4. Select a file location. Click I’m not sure to search everywhere on your computer.

5. Click Start.

6. Select All Files with your mouse and click the Recover button. If you cannot restore your files with Recuva we recommend to try using Shadow Explorer to restore your files.

7. Download and Install Malwarebytes Anti-Malware software to detect and remove malicious files from your computer.

download malwarebytes

buy now button

8. Open Malwarebytes and click the Scan Now button – or go to the Scan tab and click the Start Scan button.

9. Once the Malwarebytes scan is complete click the Remove Selected button.

10. To finish the Malwarebytes scan and remove detected threats click the Finish button and restart your computer if promoted to do so.

11. Download and Install HitmanPro by Surfright to perform a second-opinion scan.

download hitmanpro

12. Open HitmanPro and click Next to start scanning your computer. *If you are using the free version you may chose to create a copy or perform a one-time scan.

13. Once the HitmanPro scan is complete click the Next button.

14. To activate the free version of HitmanPro: enter your email address twice and click the Activate button.

15. Click the Reboot button.

16. Download and Install CCleaner by Piriform to cleanup junk files, repair your registry, and manage settings that may have been changed.

download ccleaner

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17. Open CCleaner and go to the main Cleaner screen. Click the Analyze button. When the process is complete, click the Run Cleaner button on the bottom right of the program interface.

18. Go to Tools > Startup and search for suspicious entries in each tab starting from Windows all the way to Content Menu. If you find anything suspicious click it and click the Delete button to remove it.

19. Go to the Registry window and click the Scan for Issues button. When the scan is complete click the Fix selected issues… button and click Fix All Selected Issues.

How to stay protected against future infections

The key to staying protected against future infections is to follow common online guidelines and take advantage of reputable Antivirus and Anti-Malware security software with real-time protection.

Real-time security software

Security software like Malwarebytes and Norton Security have real-time features that can block malicious files before they spread across your computer. These programs bundled together can establish a wall between your computer and cyber criminals.

download norton security
Common Online Guidelines

  • Backup your computer and personal files to an external drive or online backup service
  • Create a restore point on your computer in case you need to restore your computer to a date before infection
  • Avoid downloading and installing apps, browser extensions, and programs you are not familiar with
  • Avoid downloading and installing apps, browser extensions, and programs from websites you are not familiar with – some websites use their own download manager to bundle additional programs with the initial download
  • If you plan to download and install freeware, open source software, or shareware make sure to be alert when you install the object and read all the instructions presented by the download manager
  • Avoid torrents and P2P clients
  • Do not open email messages from senders you do not know
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Sean Doyle

Sean is a tech author and engineer with over 20 years of experience in cybersecurity, privacy, malware, Google Analytics, online marketing, and other topics. He is featured in several publications.

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