Cdaz Virus Ransomware (.cdaz File) Removal

Cdaz 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 $999 to $1999 in Bitcoins for the decryption key.

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About Cdaz Ransomware:

NameCdaz Virus
File Extension.cdaz
Contact[email protected], [email protected]
FamilySTOP/Djvu Ransomware
Offline IDdSwr1XNNi5cIitB5eDPbMANcusB1dWGDB8ToUnt1
Last seenApril 17, 2024
AlgorithmSalsa20 encryption. If Cdaz 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 .cdaz files in the future.
RansomFrom $999 to $1999 (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----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAyXWm14pk+XkPQG6eHgMw j34n7A5O+GjkfacyhhbOjmrgHm/RsnGHz2qTcZeJi6I1gAAqKlWXXmEL3TGiHyWM 1STrX4caQJXDKWmGspm6nVAl5Lpxy4bBiD8JI00NOuFUBF+n5OMRxdUgrKtWehsz JLxM0tN4mFIUrSfmw6dFkQv/jmnNlJRtR9xA3mCrDVdyJot206r4kTzNArHlyWQn r7NI45pYbJA2sltfWb81s9XJWDxP1CPZEql/7V6tANX6odKPH/TrUvPTHh2AEv5A lVIDpYc8q5Z1yJxEa6AYBYW+z83sTaf+SeprwXz5bq2Vrp+9zUjkwhIETfSL6eAC PQIDAQAB -----END PUBLIC KEY-----
Other variants
  • Cdwe Ransomware (.cdwe encrypted files)
  • Cdmx Ransomware (.cdmx encrypted files)
  • Cdqw Ransomware (.cdqw encrypted files)
  • Cdaz Virus (.cdaz File): How Does Ransomware Works & What To Do?

    What is Cdaz ransomware?

    Ransomware manifests in numerous forms, with Cdaz ransomware representing a particularly insidious variant. This virus specifically targets individual users, encrypting any accessible files on the infected device. Moreover, it incapacitates your security defenses and significantly complicates networking activities.

    Recovering the encrypted files is an arduous task. The malware employs the formidable Salsa20 encryption algorithm, rendering brute-force hacking attempts futile. Subsequently, it transfers the decryption keys to a command server under cybercriminal control. These adversaries will only relinquish the decryption key upon receiving a ransom payment or if they are apprehended by law enforcement.

    The distribution of Cdaz ransomware follows conventional pathways common to many viruses. Software obtained from peer-to-peer networks (such as eMule or ThePirateBay), often touted as "free," serves as an ideal vector for ransomware dissemination. Users are likely to dismiss security warnings during download and installation, leaving them oblivious to the antivirus's incapacitation following the attack.

    Encryption process

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

    .CDAZ 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 Cdaz 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 $1999.
    Discount 50% available if you contact us first 72 hours, that's price for you is $999.
    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 .cdaz Files?

    Indicators of Compromise(IOC)

    File NameMD5File Size
    📜 SAMPLE.EXE4ab7f99ee2a21823a94f2faaab068c7b720384
    📜 SAMPLE.EXE04e5a89b821ecc2d6715c98a4e75e168656110