Remove Ransomware with .crypt extension (Protection Manual) - How to, Technology and PC Security Forum |

Remove Ransomware with .crypt extension (Protection Manual)

A new type of ransomware believed to be one of the Troldesh variants has appeared amongst others. It employs the .crypt extensions in a file. It is thought to create files, called cconf.txt and cconf.enc. The encrypted files use a specific encryption algorithm, and they are very hard to decrypt. In case you see such files, first immediately disconnect your computer from the internet. After that, experts recommend to export immediately any of the necessary files on the affected that are not yet encrypted with the .crypt extension on a USB stick or another external memory carrier.

Update!More information has been discovered about the .crypt Ransomware. Researchers at Kaspersky have announced that they have created a working decryptor for the files encrypted by this crypto-malware. The .crypt extension files used by CryptXXX are encoded with a strong RSA-4096 encryption cipher but malware researchers have managed to discover a mistake in the code and implement the solution in their decryptors. For more recent and relevant informaiton, please check the following article.

Threat Summary

Name.crypt Extension Ransomware
Short DescriptionEncrypts important files and gives decryption keys upon paying ransom which is usually financial compensation.
SymptomsAppearing of .crypt files in various user folders or the Desktop.
Distribution MethodSpam mails. MiTM attacks, malicious redirects.
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User ExperienceJoin our forum to discuss Ransomware with .crypt Extension.

CryptXXX-cryptxxx-crypt-xxx-black-wallpaper-instructionsImage Source:

What Is .crypt extension Ransomware?

This ransomware is not the most dangerous ransomware variants because it is removable with an advanced anti-malware program. However, the sole decryption of the .crypt extension files may be a very costly process, and measure should be taken to enable defence protocols against future encryptions. This variant of ransomware is believed to insert temporary copies of generated passwords in the %appdata% director (C:\Users\>VictimUserName<\AppData\Roaming).

The .crypt Extension Ransomware – How Did I Get It?

This threat most likely spreads via email. Spoof emailing is a very common strategy if the cyber criminals have decided to target a particular computer that they believe may possess valuable information. This tactic changes the email address of the sender, making it look exactly like one of the user’s e-mail contacts. For example, if your mother’s email address is it may send you a message with this email address along with a file that may be the ransomware itself. Such files may be any of the most widely used document formats – .docx, .pdf, .xml and others.

Once there, the ransomware may attack some of the Windows processes that are in control and running with the highest priority on the PC. From there it may begin to spread its malicious files that may be keyloggers, password sniffers, .dll files and other tools that encrypt data in different algorithms.

It may create files, change desktop wallpaper, change homepage and others to a custom page that aims to inform the victim with instructions on how much time he has left until the files are gone and how to pay the ransom. Experts advise not to comply with cyber-criminals’ demands and seek professional software, dealing with such types of threats.

How To Remove .crypt Extension Ransomware?

Because the situation with ransomware is always individual for every PC and it is often a sophisticated attack, experts strongly advise to download an advanced anti-malware program. It will locate anything out of the ordinary for your OS and eradicate all files associated with .crypt Ransomware.


Malware Removal Tool

Spy Hunter scanner will only detect the threat. If you want the threat to be automatically removed, you need to purchase the full version of the anti-malware tool.Find Out More About SpyHunter Anti-Malware Tool / How to Uninstall SpyHunter

How To Protect Your Files?

The best protection against any threats is the user. Security experts always stay informed on the latest threats and they advise on using active malware detection programs that remove such threats before any damages are done. In case you have machines with relevant information that you believe may eventually become victims of such attacks, be sure to see the ‘how to protect your files’ manual under this article.

Security engineers recommend that you back up your files immediately, preferably on an external memory carrier in order to be able to restore them. In order to protect yourself from .crypt Extension Ransomware (For Windows Users) please follow these simple instructions:
For Windows 7 and earlier:
1-Click on Windows Start Menu
2-Type Backup And Restore
3-Open it and click on Set Up Backup
4-A window will appear asking you where to set up backup. You should have a flash drive or an external hard drive. Mark it by clicking on it with your mouse then click on Next.
5-On the next window, the system will ask you what do you want to backup. Choose the ‘Let Me Choose’ option and then click on Next.
6-Click on ‘Save settings and run backup’ on the next window in order to protect your files from possible attacks by .crypt Extension Ransomware.
For Windows 8, 8.1 and 10:
1-Press Windows button + R
2-In the window type ‘filehistory’ and press Enter
3-A File History window will appear. Click on ‘Configure file history settings’
4-The configuration menu for File History will appear. Click on ‘Turn On’. After its on, click on Select Drive in order to select the backup drive. It is recommended to choose an external HDD, SSD or a USB stick whose memory capacity is corresponding to the size of the files you want to backup.
5-Select the drive then click on ‘Ok’ in order to set up file backup and protect yourself from .crypt Extension Ransomware.
Enabling Windows Defense Feature:
1- Press Windows button + R keys.
2- A run windows should appear. In it type ‘sysdm.cpl’ and then click on Run.
3- A System Properties windows should appear. In it choose System Protection.
5- Click on Turn on system protection and select the size on the hard disk you want to utilize for system protection.
6- Click on Ok and you should see an indication in Protection settings that the protection from .crypt Extension Ransomware is on.
Restoring a file via Windows Defense feature:
1-Right-click on the encrypted file, then choose Properties.
2-Click on the Previous Versions tab and then mark the last version of the file.
3-Click on Apply and Ok and the file encrypted by .crypt Extension Ransomware should be restored.


Berta Bilbao

Berta is a dedicated malware researcher, dreaming for a more secure cyber space. Her fascination with IT security began a few years ago when a malware locked her out of her own computer.

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