Mmuz Virus

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*Mmuz is a variant of Stop/DJVU. Source of claim SH can remove it.


Mmuz is a blackmailing virus program that will put encryption on your files to keep them inaccessible and will then demand that you pay a ransom for the private key. If the user doesn’t pay the Mmuz ransom, her/she is threatened to never get the chance to open their file again.

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The Mmuz virus file ransom note

A group of anonymous cyber criminals have recently come up with a new computer threat which is based on Ransomware code. The infection goes under the name of Mmuz and uses a complex data-encryption algorithm that can secretly lock the files that are stored inside the compromised computer. Various camouflaged transmitters help this new Ransomware spread all over the Internet but most of the contaminations happen when the users click on malicious emails, spam messages, infected attachments, fake ads or low-quality software installers. A quick interaction with the harmful payload is enough to activate Mmuz and, sadly, there are no visible symptoms or unusual activities which can give the malware away before it completes its criminal agenda. When all the targeted files get encrypted, however, the Ransomware automatically generates a ransom-demanding message and places it on the desktop or inside the folders with sealed data. 

The Mmuz virus

The Mmuz virus is a malicious Ransomware program that will data-encrypt your files, making them unavailable to you. To open the files that the Mmuz virus has encrypted, you are required to pay a ransom to the hackers following the instructions provided in a message generated by the Ransomware.

The message clearly informs the victims that, if they want to access and use their personal files again, they need to quickly release a ransom payment to a given cryptocurrency wallet. The hackers who are in control of this sneaky infection may offer special discounts off the ransom amount if you pay immediately and promise to send you a special decryption key the moment they receive the money. If you fail to fulfill their ransom demands, however, they may threaten to delete all the encrypted data and its corresponding key forever. Unfortunately, if you decide to enter into negotiation with them, nobody can give you any guarantees about the future of your computer and your files. The criminals may continue to blackmail you in various ways while keeping your data hostage. That’s why, instead of risking the safety of your system and all the valuable things that you store on it, we suggest you remove Mmuz and opt for alternative file-recovery methods, such as the ones that we describe in the removal guide below.

The Mmuz file decryption

The Mmuz file decryption is the effective reversal of the locking process and it can normally be completed only with the help of the decryption key. To get the corresponding key for the Mmuz file decryption, the user is required to pay a sizable amount of money to the hackers.

Mmuz File
The .mmuz file virus

Paying big amounts of money to anonymous crooks and hoping for them to keep their promises is never a reliable solution in such situations. For this reason, we always advise the victims of Ransomware infections to seek other methods that can help them bypass the criminal schemes. In the case with Mmuz and Rguy, indeed, there aren’t many options to choose from, but in the removal guide above, we’ve done our best to provide you with some suggestions on file-recovery as well as detailed steps on how to remove the infection. If you start with removing the malware, you will at least have a clean computer and a safe system which you can use because keeping the active cryptovirus inside the OS can lead to much more trouble. For instance, if not fully removed, Mmuz may encrypt every new file that you create or lock the data on every external device that you connect, in this way blocking you from using any data and making it impossible to recover anything.


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*Mmuz is a variant of Stop/DJVU. Source of claim SH can remove it.

Remove Mmuz Ransomware


Step 1 of this instruction describes how to restart the computer in Safe Mode. Our recommendation is that you begin by clicking on the Safe Mode link and completing the steps there, so that the malware may be removed from your system more easily.

To avoid having to look for Mmuz removal instructions again when you restart your computer, please save this page to your browser’s favorite bookmarks.



*Mmuz is a variant of Stop/DJVU. Source of claim SH can remove it.

It’s tough to identify ransomware like Mmuz because this danger may lie unnoticed for a long time, and it could do a lot of damage to the system during that time.

One of the most difficult things you’ll have to do when this ransomware infects your computer is discover and stop its malicious processes. To ensure the safety of your computer, please take the time to properly follow the instructions outlined in the next paragraphs.

On your computer’s keypad, simultaneously press CTRL+SHIFT+ESC. To further narrow the scope of your investigation, look for any processes that could be connected to the hazard. Windows Task Manager displays this information on the Processes tab.

Next, look at the files related to any process that look suspicious. The quick menu may be accessed by right-clicking on the suspicious processes and selecting Open File Location.


You may use the free online scanning tool provided below to ensure that the files associated with this process are clean of any possibly dangerous code.

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    If any of the files are flagged as potentially dangerous, make sure that you first end the running processes related to them by right-clicking on it and selecting End Process. After that, go back to the infected files and delete them from their original locations.


    Aside from ending the malicious processes related to Mmuz, it is equally important to disable any harmful startup items that the malware might have introduced to the system without your knowledge. For this, you need to first open System Configuration and then check the Startup tab.

    System Configuration may be found by typing msconfig in the Windows search field. Take a look at the startup items  displayed in the Startup tab:


    Unchecking any starting items associated with the ransomware should be your first concern. Look for startup components that aren’t generally linked with the apps that run when the system boots up. You can deactivate them by unchecking their checkboxes. Don’t deactivate any operating system or trustworthy program components while doing this, though!


    To remove parasite on your own, you may have to meddle with system files and registries. If you were to do this, you need to be extremely careful, because you may damage your system.

    If you want to avoid the risk, we recommend downloading SpyHunter
    a professional malware removal tool.

    More information on SpyHunter, steps to uninstallEULAThreat Assessment Criteria, and Privacy Policy.

    To guarantee, the ransomware is entirely removed, and no destructive components are left behind, you need to delete any malicious registry entries identified in your registry editor in the fourth step of this guide. 

    The Registry Editor may be launched by searching for it in the Windows search field and pressing Enter. Search for ransomware-related files in Registry Editor using the CTRL and F keyboard key combination, and type the name of the ransomware in the Find box. Click on Find Next after that to start the search. Right-clicking on a dangerous entry gives you the option to remove it.

    Attention! Only the ransomware-related registry entries should be deleted. If you alter the registry or remove anything unrelated to the threat, you may corrupt your system and installed programs, so keep this in mind when you are dealing with the registry files. If you’re still unsure, know that this page has a link to a professional malware cleanup application that can assist you in getting rid of Mmuz and other viruses from your PC.

    Close the Registry Editor after you’re done, and then look in the locations listed below for any other possibly malicious files or subfolders. You can search for them in the Windows search field and click Enter to open them one at a time.

    1. %AppData%
    2. %LocalAppData%
    3. %ProgramData%
    4. %WinDir%
    5. %Temp%

    Any suspicious-looking files or subfolders that have recently been added should be properly checked. Remove any potentially malicious temporary files from your computer by deleting everything in the Temp folder.

    The next step is to check your system’s Hosts file for any malicious alterations. Using a Run dialog box (hold down the Windows key and R key at the same time), type the following command in the Run box and then click OK:

    notepad %windir%/system32/Drivers/etc/hosts

    Please let us know if the Hosts file contains suspicious IP addresses under “Localhost” as seen in the figure below, so that we can investigate further. If you have any questions or concerns, do not hesitate to contact us in the comments.

    hosts_opt (1)


    How to Decrypt Mmuz files

    Dealing with the consequences of a ransomware data encryption can be a challenging task even for professionals. However, it is possible to decrypt data that has been encrypted by using some file-restoration options. The first step, however, is to figure out which type of Ransomware you’re dealing with. It’s easy to find this information by looking at the end of the encrypted files and their file extensions.

    New Djvu Ransomware

    STOP Djvu is one of the most recent Djvu Ransomware versions that you may encounter and this specific threat can easily be recognized thanks to the .Mmuz file extension that is typically adds to the files that it encrypts. 

    Those who have had their data encrypted by this new variant may have some hope of recovering it, especially if an offline key has been used to encode their files. This specific ransomware version has a file-decryption program that can assist you decrypt your files. Please click on the link below for more information on how to download it.


    Click “Run as Administrator” on the decryption tool file you’ve downloaded, then click “Yes” to run it. Before continuing, please review the provided instructions and the accompanying license agreement. Clicking the Decrypt button will begin the decryption procedure.

    Use caution if you need to decode files that has been encoded with unknown offline keys or online encryption, as they may not be decryptable with this program. Please feel free to ask any questions or express any concerns in the comments section below this page.

    Important! Be sure to fully scan your computer for ransomware-related files and dangerous registry entries before attempting to decrypt data that has been encrypted. This page’s free online virus scanner and the recommended anti-virus software can both help you eradicate Mmuz-related malware from your computer.



    About the author


    Brandon Skies

    Brandon is a researcher and content creator in the fields of cyber-security and virtual privacy. Years of experience enable him to provide readers with important information and adequate solutions for the latest software and malware problems.

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