Bowd Ransomware (.bowd Files)

Bowd Ransomware uses the Salsa20 encryption algorithm. This STOP/Djvu family is one of the most popular infection!

You may be interested in taking a look at our other antivirus tools:
Trojan Killer, Trojan Scanner.

About Bowd Ransomware:


NameBowd Virus
Version0594
File Extenstion.bowd
Contact[email protected], [email protected]
FamilySTOP/Djvu Ransomware
Note_readme.txt
Offline IDoHp5e4SJxdFtxfvKYmeX06F4C5cn0EcsF5Ak9Wt1
Last seenDecember 03, 2022
AlgorithmSalsa20 encryption. If Bowd 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 .bowd 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, 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----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAl4vKVxPlvsnqzFmOtApr PDoEZeIQxPLPwmXjNinTlraVIIr80Yx0cF+Uq24WBSBwVOmpVj/QxFE5d/JmMbH5 mZulvDo5gMb3LZo2TdKESrcW5rxaJhT43Ci3ZxI9xv3eHlVFDg++1kJVFlWQEqkK dMgUflyDA8AUZPasbxao4WT6qaAQ3nhR0mmwSTaJ14dKHH5zFpIjzznofpoyVrv/ 7YvHzq4vkGtylJaPNG9QGPnukRttjC1Xo/cT5UO7NMhpcYt14fjanIvb9Y0F6Ur0 MweM7exj7iPD70TSc5/itT9B+jKKTQH2+UbPKMo+cjuCgwu3E1Wvpx4cHoIIEzAA mQIDAQAB -----END PUBLIC KEY-----
Other variants
  • Pozq Ransomware (.pozq encrypted files)
  • Powd Ransomware (.powd encrypted files)
  • Nury Ransomware (.nury encrypted files)
  • Bowd Ransomware (.bowd Files) - What is it? Keep Your Privacy Well

    Ransomware has a lot of faces. In the case of Bowd ransomware, it is a virus that targets individual users and, like any other ransomware, encrypts the files it can reach on the infected computer. In addition, it disables your security tools and makes networking quite hard.

    The files it encrypts are very hard to get back. Malware uses a robust encryption algorithm - Salsa20, which is likely impossible to hack with brute force. Then, the virus sends the decryption keys to its command server, which is controlled by cybercriminals. Those guys will give you the decryption key only after the ransom payment or after being captured by the police.

    Bowd ransomware is distributed through pretty standard channels, used by various other viruses. โ€œFreeโ€ software, which you can get through the peering networks (eMule, ThePirateBay), is a perfect shell for ransomware because the user will likely ignore all alerts from the security systems. After the attack, they will not even see any signs of life from the antivirus program.

    Encryption process

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

    .BOWD 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 Bowd 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:

    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-dyi5UcwIT9
    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:
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    Indicators of Compromise(IOC)

    File NameMD5File Size
    ๐Ÿ“œ SAMPLE.EXE9a164cede19b9203c508c386fabb2a45839680
    ๐Ÿ“œ SAMPLE.EXE46f62af31b9d5acfb159c0f95c95fc54841216
    ๐Ÿ“œ SAMPLE.EXEa6b2ff8696cdf252594424d9f340e345840192
    ๐Ÿ“œ SAMPLE.EXEa2194b65140e588424731169c7eb8174840704
    ๐Ÿ“œ SAMPLE.EXE537ecc10bd947a0dd5d9088bf6474fa2840192
    ๐Ÿ“œ SAMPLE.EXE683716645ccd5866870caf64f21951b2840704
    ๐Ÿ“œ SAMPLE.EXE4a399bbce7a83483767712b5f4f1b080841216
    ๐Ÿ“œ SAMPLE.EXE1552564d0af2fa30bbb740b1a0ad54a2840192
    ๐Ÿ“œ SAMPLE.EXE1af44914e2340ab6da17a3a61609a2e4840704
    ๐Ÿ“œ SAMPLE.EXE7118c586495dc286e36ed4b2572953b2858112