Kolz Ransomware

Kolz Ransomware Description

The Kolz Ransomware is designed to target all popular files and encrypt them with cryptographic algorithms that cannot be brute-forced. This ensures that the hackers behind the ransomware threat are the only ones that possess the decryption key needed for the restoration of the files. When the Kolz Ransomware encrypts a file, it appends the extension '.kolz' to the original filename. The instructions left by the hackers are dropped in the form of a text file named '_readme.txt' that is created in every folder containing locked data. The Kolz Ransomware is a newly discovered ransomware threat that belongs to the STOP/Djvu Ransomware family. 

Victims of the Kolz Ransomware are provided with two email addresses for contact with the cybercriminals. The primary address is helpmanager@mail.ch, while the reserve email is 'restoremanager@airmail.cc.' The ransom specifies that the sum demanded by the hackers in exchange for the decryption tool and key is $980. If the users affected by the Kolz Ransomware establish contact within the first 72 hours of the infection, they would be offered a 50% reduction and the price goes to $490. They also can send one file to be decrypted for free. The note doesn't mention any restrictions for the file, only that it shouldn't contain valuable information.

Handling the aftermath of a ransomware infection is not easy. Many users might be tempted to make the payment to the hackers. However, it may not be the best unravelment, according to most infosec experts. There are no guarantees that the hackers would honor their end of the bargain and not simply walk away with the money and start working on their next malware threat.

The ransom note of Kolz Ransowmare is:


Don't worry, you can return all your files!

All your files like pictures, databases, documents and other important are encrypted with strongest encryption and unique key.

The only method of recovering files is to purchase decrypt tool and unique key for you.

This software will decrypt all your encrypted files.

What guarantees you have?

You can send one of your encrypted file from your PC and we decrypt it for free.

But we can decrypt only 1 file for free. File must not contain valuable information.

You can get and look video overview decrypt tool:


Price of private key and decrypt software is $980.

Discount 50% available if you contact us first 72 hours, that's price for you is $490.

Please note that you'll never restore your data without payment.

Check your e-mail "Spam" or "Junk" folder if you don't get answer more than 6 hours.

To get this software you need write on our e-mail:


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