Hgfu Virus Ransomware (.hgfu File) Removal

Hgfu 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 Hgfu Ransomware:

NameHgfu Virus
File Extension.hgfu
Contact[email protected], [email protected]
FamilySTOP/Djvu Ransomware
Offline IDNk8w6hJsuGrE3s2SYWM3ehMUHvjgVRqqgX84dat1
Last seenSeptember 11, 2023
AlgorithmSalsa20 encryption. If Hgfu 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 .hgfu 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----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAw1e+B7evmv3FQSAV1LbZ ajkNpio2wBxH2z9/+xaw+EoWuAV5BVXZOW38a45FtuAJyocnDeCPGHjpsKD549xI 5ryKrKq1knUaPZQpObzTTvWXILI8blGGpZpB22himH/dAe0AzqvaOE87Aw13OZkH KNi45klV+ySpKKr0CXjjH0z3zO2efL3SlGmdhKoMXozNZ1rkOCXHU1Fimhe6iCC0 jCzGrT1ou7O3wyMfTVm7HGnKRfa7vzpCZ5Ad2OxB9sSZRTOEa2duuMdTfX2ZJseJ T3lysi2dGgqTshpfsogHYQq33OD8C8JACcaaozM7f7ut8JS7BV04SpRJw21yJGrl TQIDAQAB -----END PUBLIC KEY-----
Other variants
  • Hgkd Ransomware (.hgkd encrypted files)
  • Rzml Ransomware (.rzml encrypted files)
  • Rzew Ransomware (.rzew encrypted files)
  • Hgfu Virus (.hgfu File): How Does Ransomware Works & What To Do?

    What is Hgfu ransomware?

    The Hgfu virus, a type of ransomware within the STOP/Djvu family, specifically targets your finances. This malware encrypts your files using a sophisticated cipher and then demands a ransom (approximately $1000) for decryption. To thwart any alternative decryption methods, the Hgfu virus implements various system modifications.

    These alterations primarily affect security settings. Initially, the malware disables Microsoft Defender and blocks any third-party security software present. Subsequently, it modifies Group Policies to prevent the execution of antivirus program installation files. The ultimate maneuver involves restricting access to websites offering insights on file decryption and malware eradication. Such changes can impede future PC operations, underscoring the importance of their prompt reversal.

    Regarding the distribution of Hgfu ransomware, its emergence isn't coincidental; it's often bundled with seemingly innocuous software. "Free" versions of inherently paid applications, crafted by anonymous developers, serve as a common vector. During the modification process, these creators can embed any malicious payload into the program's executable, ranging from spyware and coin miners to ransomware or data stealers. Sidestepping such hazards is advisable, particularly given the legal challenges in holding the culprits accountable.

    Encryption process

    The Hgfu 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 - ".hgfu". Then, ransomware creates a _readme.txt file in the folder where the encrypted file is located, and goes to the next folder.

    .HGFU 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 Hgfu 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 .hgfu Files?

    Indicators of Compromise(IOC)

    File NameMD5File Size
    📜 SAMPLE.EXEd964dc85ce7dd77ffb40e6b38cb77e3f758272
    📜 SAMPLE.EXE7d30d9099185aa1cdc8f0333d3146328731136
    📜 SAMPLE.EXE1742487a8c888f255e19cbf1e34a7823657633