Mmnn Virus


Mmnn is a ransomware cryptovirus representative. The main goal of Mmnn is to get money from its victims by taking hostage of their files through encryption. The creators of the ransomware demand a ransom payment in order to decrypt the locked information.

Mmnn Virus

The Mmnn Virus will start encrypting your files as soon as it infects your system.

Ransomware viruses, which many web users fear, are extremely dangerous computer threats that cannot be dealt with easily. In the past couple of years, the representatives of this software category have increased and new advanced infections have started to target Internet users. One of the Ransomware’s latest versions is known as Mmnn and on this page, you will learn more about it. This online infection belongs to the so-called cryptovirus subcategory. Such viruses usually cause damage to their victims by encrypting their files without their knowledge. This allows hackers to threaten the victims afterward to pay a ransom for accessing their personal data again. Unfortunately, it is difficult to remove the applied file encryption so the victims often do not see any alternative to the ransom payment if they really want to recover their locked data.

Luckily, certain alternative solutions exist and they may help you save your money and some of your files. You’ll learn more about them if you stay with us. Below, our “How to remove” team has prepared a detailed removal guide to help those who have been attacked by the Mmnn deal with it in the best possible manner. The removal guide contains manual deletion steps, a professional tool for removing the cryptovirus, and guidance on how to potentially retrieve encrypted files without sending money to the hackers.

The Mmnn virus

The Mmnn virus is a harmful computer threat that aims at encrypting user files and keeping them unavailable until a ransom is paid. Users who have the Mmnn virus on their computer will normally be greeted by a ransom-demanding notification that provides instructions for a money transfer.

Most Ransomware viruses, like Mmnn, Ooss and Alka have a range of stealthy methods that help them to secretly infect the device and perform the malicious action they have been created for. These infections can avoid being detected by most antivirus programs. This is because the file encryption that they use to cause harm is a method, which is not malicious or harmful by itself. It simply makes the files on the system inaccessible without a particular key that can decrypt them. The problem is that the only people who possess the key are the cybercriminals who threaten you to.

Mmnn file extension

The Mmnn file extension is a special encoding format that keeps you from opening your files and makes them unrecognizable by any software. If you see the Mmnn file extension in some of your files, turn the computer off immediately and seek help.

Many of the victims of Ransomware also ask us what actions they may take once the malware has encrypted all their images, videos, archives and other files of great value to them. Sadly, we must be honest here and say that there can be no guarantee that your information will be fully retrieved. In this context, it’s a good start to try every option that could help you. This includes giving a try to the removal guide below, recovering files from personal backups or even contacting a specialist.


Name Mmnn
Type Ransomware
Danger Level High (Ransomware is by far the worst threat you can encounter)
Symptoms Very few and unnoticeable ones before the ransom notification comes up.
Distribution Method From fake ads and fake system requests to spam emails and contagious web pages.
Data Recovery Tool [banner_table_recovery]
Detection Tool

Mmnn Ransomware Removal

Mmnn Virus

Some of the steps will likely require you to exit the page. Bookmark it for later reference.

Reboot in Safe Mode (use this guide if you don’t know how to do it).

Mmnn Virus


Press CTRL + SHIFT + ESC at the same time and go to the Processes Tab. Try to determine which processes are dangerous. 

Mmnn Virus

Right click on each of them and select Open File Location. Then scan the files with our free online virus scanner:

Mmnn Virus
Drag and Drop Files Here to Scan
Maximum file size: 128MB.

This scanner is free and will always remain free for our website's users. You can find its full-page version at:

Scan Results

Virus Scanner Result
Mmnn VirusClamAV
Mmnn VirusAVG AV
Mmnn VirusMaldet

After you open their folder, end the processes that are infected, then delete their folders. 

Note: If you are sure something is part of the infection – delete it, even if the scanner doesn’t flag it. No anti-virus program can detect all infections.

Mmnn Virus

Hold the Start Key and R –  copy + paste the following and click OK:

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

A new file will open. If you are hacked, there will be a bunch of other IPs connected to you at the bottom. Look at the image below:

Mmnn Virus

If there are suspicious IPs below “Localhost” – write to us in the comments.

Type msconfig in the search field and hit enter. A window will pop-up:

Mmnn Virus

Go in Startup —> Uncheck entries that have “Unknown” as Manufacturer.

  • Please note that ransomware may even include a fake Manufacturer name to its process. Make sure you check out every process here is legitimate.

Mmnn Virus

Type Regedit in the windows search field and press EnterOnce inside, press CTRL and F together and type the virus’s Name. 

Search for the ransomware  in your registries and delete the entries. Be extremely careful –  you can damage your system if you delete entries not related to the ransomware.

Type each of the following in the Windows Search Field:

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

Delete everything in Temp. The rest just check out for anything recently added. Remember to leave us a comment if you run into any trouble!

Mmnn Virus 

How to Decrypt Mmnn files

We have a comprehensive (and daily updated) guide on how to decrypt your files. Check it out here.

If the guide doesn’t help, download the anti-virus program we recommended or try our free online virus scanner. Also, you can always ask us in the comments for help!


About the author


Lidia Howler

Lidia is a web content creator with years of experience in the cyber-security sector. She helps readers with articles on malware removal and online security. Her strive for simplicity and well-researched information provides users with easy-to-follow It-related tips and step-by-step tutorials.

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