Moqs Virus Ransomware (.moqs File)

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

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About Moqs Ransomware:

NameMoqs Virus
File Extension.moqs
Contact[email protected], [email protected]
FamilySTOP/Djvu Ransomware
Offline IDCatwRkqdYh2Jomn6DqwFoGgcSbDsle1xlE1NPtt1
Last seenJune 09, 2022
AlgorithmSalsa20 encryption. If Moqs 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 .moqs 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, 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----- MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA1JnXUvYSI7xHYUsI7fH6 jvtXhhyxmxKGiy8VH8a2HXQkTron84LIB8sRhX0SADueDS7YrU5Xrbz+jXdxuRFu 8crvAT2jDlDOu9W5DHB1q6x4fXL8o1FzNNBxsiULuaq1umohD5/tirTGaMexHmNA gnqYI5BVLygOSmXBDydY+tq1SrgWPdgtYKiXq8xSMLR+nE+4pO7MpjqhcdkMJDhq x69X2cEfPAlTCeU6MOY+lnFchZ3fCa3XaqeetchX0YstnCz2EzR4RaVNaKIJlmV0 2bwYsn+WvOPTzyOhdpjPgjCLQkFSRtDnDixxTOozdiP+F/RVVzcWoJwd67tpgbLu BwIDAQAB -----END PUBLIC KEY-----
Other variants
  • Gujd Ransomware (.gujd encrypted files)
  • Iqll Ransomware (.iqll encrypted files)
  • Sspq Ransomware (.sspq encrypted files)
  • Moqs Virus Ransomware (.moqs) File - How does it work?

    What is Moqs ransomware?

    Ransomware has a lot of faces. In the case of Moqs 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.

    Moqs ransomware is distributed through pretty standard channels, used by various other viruses. “Free” 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 Moqs 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 - ".moqs". Then, ransomware creates a _readme.txt file in the folder where the encrypted file is located, and goes to the next folder.

    .MOQS 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 Moqs 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]

    Your personal ID:

    Indicators of Compromise(IOC)

    File NameMD5File Size
    📜 SAMPLE.EXE579d6e44ca1a31c9fd59b2be609fc338715776
    📜 SAMPLE.EXE295b636a33123c6637710a85f81521a3724992