Byaa Ransomware Joins Army of Djvu Clones

A new strain of an old and very familiar family of ransomware was recently detailed by researchers. The new threat is called the Byaa ransomware and it belongs to the large family of Djvu ransomware variants.

The ransomware will encrypt most commonly used file types and make the data inside them unusable. The newly scrambled files get the ".byaa" extension appended after their original one, hence the name of the new threat. This means that a file that was called "essay.docx" prior to encryption will turn into "essay.docx.byaa" once it has been encrypted by Byaa.

The ransomware uses a familiar template - the victim is urged to pay within the first 72 hours and only send $490 to supposedly get their files back. Beyond that period of time, the hackers hike the price up to $980. Of course, there is zero guarantees that victims will ever receive the decryptor if they decide to pay up.

The Byaa ransomware drops its note in the format seen with other Djvu variants - inside a plain text file called "_readme.txt". Here is the full text of the note:


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:

manager at time2mail dot ch

Reserve e-mail address to contact us:

supportsys at airmail dot cc

Your personal ID:

Sadly, there is currently no working free decryption tool for the newest iterations and clones of the Djvu ransomware family, so backups remain the only viable option to restore files affected by the Byaa ransomware.

May 13, 2022