Gridinsoft Logo

WWZA Ransomware (.wwza File Extension)

WWZA 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.

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

About Wwza:


NameWwza Virus
Version0789
File Extension.wwza
Contact[email protected], [email protected]
FamilySTOP/Djvu Ransomware
Note_readme.txt
Offline IDLtYnlJvK0hICyOCeum6Tv4pbia9jcIGHVgA3Xht1
Last seenMay 31, 2024
AlgorithmSalsa20 encryption. If Wwza 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 .wwza 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----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA8Bq+5pcG5JluDQMfau0S 16TRdM3CsTrz2ULJEBmebaF8WYcYN9m5HL/YjfMbPX4IbySIaInDQ8D0wkZ46J2P R9yYfiezB+GRcdkTLeawKKiumPSAfSdLSaPf+5AnmQtKFQuASBWMfLCYdElnVtx8 pMKVz2RFPoKpmvjizqJXFuC9s1e+LoN/odSZePLYvn50k8fqI5TnrSAfpDR9ZEsC V9V9aQxhNjF+BoUNdimOaWPLBGwyBZSRoU8jH4NTXnWiAFERHEBlIGKi0tTgRiq6 QOB9NgBh+gKnKRVXaTighrttsmA8Wg2ScD+gOB0JCoZ1QQy7vhQZxnivEUEsVB33 zwIDAQAB -----END PUBLIC KEY-----
Other variants
  • Wwhu Ransomware (.wwhu encrypted files)
  • Wwty Ransomware (.wwty encrypted files)
  • Wwpl Ransomware (.wwpl encrypted files)
  • WWZA Virus Removal Tool

    What is Wwza?

    Discovering files with the .wwza extension and _readme.txt notes scattered across various folders is a telltale sign of infection with the Wwza ransomware. This malware is designed to encrypt files on the victim's computer before demanding a ransom. Decrypting these files without specific tools is generally considered impossible.

    The Wwza virus, like others in the STOP/Djvu ransomware family, employs the Salsa20 encryption algorithm, which boasts an astronomical number of potential decryption keys, making brute-force attempts futile. The use of quantum computing wouldn't significantly reduce the decryption time, possibly outlasting the Earth's lifespan. However, there's a glimmer of hope as certain specialized decryption tools can potentially restore your files within hours.

    Wwza ransomware is primarily distributed through third-party websites that tempt users with free access to paid programs or through the use of various dubious tools. Hackers who circumvent program licensing inject malicious codeโ€”or even the entire virusโ€”into their "products," with malware developers compensating them for these actions.

    Dubious tools, designed for illegal activities such as generating license keys for software or activating Windows unlawfully, are particularly susceptible to misuse for distributing malware. Since antivirus solutions typically flag such tools, perpetrators often advise disabling security software or whitelisting the hacking tool. Regrettably, the malicious intent becomes apparent only after the damage is done.

    Wwza Encryption process

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

    .WWZA 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 Wwza 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.

    Wwza 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-xoUXGr6cqT
    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 .wwza Files?

    Indicators of Compromise(IOC)

    File NameMD5File Size
    ๐Ÿ“œ SAMPLE.EXE7afc89b638e5cbd471ec4acf448e79381273856
    ๐Ÿ“œ SAMPLE.EXE3d7732ac58ca3d98f7fba6e40314376e259072
    ๐Ÿ“œ SAMPLE.EXEcf014ab0a3e616d4191e3e3cc58dd447780288
    ๐Ÿ“œ SAMPLE.EXE30258031f3b48750850512a93c4dd2e1780800
    ๐Ÿ“œ SAMPLE.EXE37b7c3c0796772c2c2508d6c32f8b9bc259584
    ๐Ÿ“œ SAMPLE.EXE7c5940c3eb79c3a97f4e98f1a8dac782232448
    ๐Ÿ“œ SAMPLE.EXEbede691f0e866216d9857a94f3c92998753664
    ๐Ÿ“œ SAMPLE.EXEdd8c49d2098e4fbfc33c9a859a8236681273856
    ๐Ÿ“œ SAMPLE.EXE5cc8371d17201d3a40116bf5e723d8a7230912
    ๐Ÿ“œ SAMPLE.EXE6f96690434b5773bf15185f25f0661e5752128