Fatp Virus Ransomware (.fatp File) Removal

Fatp Virus is a strain within the STOP/Djvu Ransomware family, employing the Salsa20 encryption algorithm to encrypt files on compromised systems. Victims are coerced into paying a ransom ranging from $490 to $980 in Bitcoins for the decryption key.

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About Fatp Ransomware:

NameFatp Virus
File Extension.fatp
Contact[email protected], [email protected]
FamilySTOP/Djvu Ransomware
Offline ID5IRhyFuF3rXlXBvF6jAWjHEAnAb432icDCcvZyt1
Last seenNovember 12, 2022
AlgorithmSalsa20 encryption. If Fatp cannot establish a connection to crooks server before starting the encryption process, it uses the offline key. This key is the same for all victims(!), making it possible to decrypt .fatp files in the future.
RansomFrom $490 to $980 (in Bitcoins)
  1. ⮞ Can delete Volume Shadow copies to make victim’s attempts to restore data impossible;
  2. ⮞ Adds a list of domains to HOSTS file to block access to certain security-related sites;
  3. ⮞ Installs password-stealing trojan virus, like Redline Stealer, Vidar Stealer, Smokeloader, Azorult and others;
DistributionThird-party downloaders, installers, peer-to-peer networks, RDP exploits, etc.,
RSA Public Key-----BEGIN PUBLIC KEY----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAuS0M8VCLGWVhBLGo2pqB SGYfvgUYDE8JiTANheryvrGXhVxzGE/On0JE4oBXwJKtLw9NHLNF3qlQZMUcaE01 Y8b2ZLvS7it9R/r2jT+TMCdkh1T0qKXL0/6JAZ+E2gckUAx9C76+1tJfCPYEADcA 7tYrQCU4AD3LAlLR/izuvsWsoqKriptkbLbDwTTp1+LM+BGbdQeUeTAkr6zJCpdl 7GJwiBqbC9Uqe3AvNbWTAwsG/aNlTNY+VuVXXdKpo/RC35K/0vlZY4rDwqIuQQ/M Kptge3fXRLyDaVhi+ww30F2/f19Wx8gjNNLv6rDhtoLDguhZY4wSwImGSHX3WKu4 EwIDAQAB -----END PUBLIC KEY-----
Other variants
  • Zate Ransomware (.zate encrypted files)
  • Zatp Ransomware (.zatp encrypted files)
  • Bozq Ransomware (.bozq encrypted files)
  • Fatp Virus (.fatp File): How Does Ransomware Works & What To Do?

    What is Fatp ransomware?

    Fatp ransomware exemplifies a "classic" ransomware infection. This virus infiltrates your PC, encrypts your files, and then demands payment for decryption. The average ransom amount is $980, accompanied by threats of permanent file deletion or non-decryption if payment isn't made. Crucially, it also modifies numerous system settings.

    The malware changes your system's configurations to weaken defenses and hinder early virus detection efforts. It specifically deactivates Microsoft Defender and obstructs the installation of antivirus software. These alterations not only compromise your security but also affect your ability to install other software and must be promptly reversed.

    Fatp ransomware employs the Salsa20 encryption algorithm, a common choice among the STOP/Djvu ransomware family. The strength of this cipher, with 1.158x10^77 (a 78-digit number) possible decryption keys, makes conventional hacking attempts futile. Brute-forcing this encryption would take over two unvigintillion years, highlighting the impracticality of such an approach for recovery.

    Encryption process

    The Fatp ransomware uses the Salsa20 encryption algorithm. That is not the strongest method, but it still provides an overwhelming amount of possible decryption keys. To brute force the 78-digit number of keys, you need 3.5 unvigintillion years (1*10^65), even if you use the most powerful regular PC. Quantum computers can show a bit better results, but it is still too slow to get your files back while you are alive.

    The exact algorithm of encryption is next: malware scans each folder for the files it is able to encrypt. Then, when it finds the target, it makes a copy of your file, removes the original one, encrypts the copy and leaves it instead of the removed original. Such a procedure is done to prevent the situation when you have already opened the file, so ransomware is not able to read it because of the Windows restrictions. To each encrypted copy, the virus adds the specific extension - ".fatp". Then, ransomware creates a _readme.txt file in the folder where the encrypted file is located, and goes to the next folder.

    .FATP Files

    Such an encryption method can be exploited for file recovery. Since the original file is deleted, you may try to recover it using the file recovery tools. The less time is passed - the bigger the chance to get your files back, so hurry up!

    Another specific moment that can help you to use the files even after the encryption is the fact that Fatp ransomware encrypts only the first 150KB of each file. Hence, you can try to run a big file, such as video or music, without the encryption. Similar feature also works with other ransomware families - Dharma, Conti and Makop encrypt the same 150KB.

    Ransom note: _readme.txt

    Ransom note is the same for the whole ransomware family. In fact, it is one of the main signs of to which family the certain ransomware belongs. Here is the typical note for STOP/Djvu family:


    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:
    [email protected]

    Reserve e-mail address to contact us:
    [email protected]

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    🔗 HowToFix.Guide: How To Decrypt .fatp Files?

    Indicators of Compromise(IOC)

    File NameMD5File Size
    📜 SAMPLE.EXE3c160e504076c690b7a1f577d703e665729600
    📜 SAMPLE.EXE3e264c34afbd4a6a10ea1931023846bf729088
    📜 SAMPLE.EXE1195113a1b6399f0fae76f809526a6c6729088
    📜 SAMPLE.EXE709b1942cf3e72377360b756160b747c729088
    📜 SAMPLE.EXE2391465ff49f63a1e3d0f706780a75ec729088
    📜 SAMPLE.EXEbc61264ac2c5e2665df415cb70a1326a728576
    📜 SAMPLE.EXE5a2391b77f51ac80fbaa3bc1fae75010729600
    📜 SAMPLE.EXE6c555735096ea462b10873f54d7a21f7728576
    📜 SAMPLE.EXEdd48e3880d41cd5bbf59aa4e4a178196729600
    📜 SAMPLE.EXE0f9e2b0273b5b50ba6dcc106e0223666728064