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AGVV Ransomware (.agvv File Extension)

AGVV 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 Agvv:


NameAgvv Virus
Version0737
File Extension.agvv
Contact[email protected], [email protected]
FamilySTOP/Djvu Ransomware
Note_readme.txt
Offline IDIGjpno8dwAKJpBjbvlsxfyQXyNoBoo3dXUtMk6t1
Last seenMarch 13, 2024
AlgorithmSalsa20 encryption. If Agvv 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 .agvv files in the future.
RansomFrom $490 to $980 (in Bitcoins)
Damage
  1. โฎž Can delete Volume Shadow copies to make victimโ€™s attempts to restore data impossible;
  2. โฎž Adds a list of domains to HOSTS file to block access to certain security-related sites;
  3. โฎž 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----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAs2GxC12OwTlWciIhQP94 a3Po2kFcgzbR2KoMtsvkhvYmsdpsYNs31Dfd4wb9/W/USilyGz830xVCzjBSXpzV F1Yb78BvxGT1vCypc3U4Uz3L8Er0xUOcQ5FpXtSoXxMCYOG1uYm7eE7c0O7QLbko CMW4f5gPjE6yw4VkjOx9rkyfzS83GAFghVfpaRMOvNvQeOJ1a1C1eleO8y15GeqH tRhOu7BVyCZ9njwJDw0f2Fxs/Jao7A4a2UmWoOhDB/ANGoQFmKbgpOYJIClz/cEA DXd7jhp8Y5knc0RGKF9oDh40RYqtthO3AmuNCe3SMGuhgdXvmeuzjeD5UbxiYYun vQIDAQAB -----END PUBLIC KEY-----
Other variants
  • Agpo Ransomware (.agpo encrypted files)
  • Aghz Ransomware (.aghz encrypted files)
  • Tgvv Ransomware (.tgvv encrypted files)
  • AGVV Virus Removal Tool

    What is Agvv?

    The Agvv 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 Agvv 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 Agvv 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.

    Agvv Encryption process

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

    .AGVV 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 Agvv 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.

    Agvv note:

    Ransom note is the same for the whole STOP/DJVU 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:

    ATTENTION!

    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:
    https://we.tl/t-3OsGArf4HD
    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]

    Your personal ID:
    ****************

    ๐Ÿ”— HowToFix.Guide: How To Decrypt .agvv Files?

    Indicators of Compromise(IOC)

    File NameMD5File Size
    ๐Ÿ“œ SAMPLE.EXEe7dce44fd1c02623719da154a73530b26172531
    ๐Ÿ“œ SAMPLE.EXE8498a90e5079ab50533e2471231b044e277504
    ๐Ÿ“œ SAMPLE.EXE622e7c9379b9c65e8ac368606586fbec280576
    ๐Ÿ“œ SAMPLE.EXEddb1ec135c4010bba26c01cc82c4b3241273856
    ๐Ÿ“œ SAMPLE.EXE8dd2b3621a602482286f8e3fbd31b5671273856
    ๐Ÿ“œ SAMPLE.EXE0a9e0021bb0cf7315601291d34fa20df799744
    ๐Ÿ“œ SAMPLE.EXE5f01b8d33d1762badb20d4220ac33e0b801280
    ๐Ÿ“œ SAMPLE.EXEd74b78f8e04f9107101ddca79f548998799232
    ๐Ÿ“œ SAMPLE.EXE8afd319994d262137b43aeb6a74ad51e799232
    ๐Ÿ“œ SAMPLE.EXE40b203851c4c24adc848bc6f1f3e7cc2809984