Kruu ransomware is a newly discovered strain of file-encrypting malware. The new ransomware variant is the latest member of the ever-growing Djvu ransomware family.
The ransomware works as expected, without any big surprises. It encrypts popular file types including the most commonly used media, document and database formats. Once files are encrypted, they get the extension ".kruu" appended after their original one. In effect, this means that a file named "ledger.xlsx" will turn into "ledger.xlsx.kruu" once it has been encrypted by the ransomware.
The ransom note is dropped inside a plain text file called "_readme.txt", as is customary for almost all Djvu variants. The ransomware uses a little social engineering trick, offering a "discount" to the ransom payment if it's made within the first 72 hours after the encryption. The ransom gets a twofold hike up from $490 to $980 if payment is attempted after this timeframe.
Of course, there is no guarantee that the victim will ever receive a working decryption tool even if they pay up, even though the hackers offer to decrypt a single file "for free", as proof they have a working decryptor.
The full text of the ransom note is as follows:
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: