.Maas Virus



.Maas is a representative of the file-encrypting type of ransomware viruses. .Maas acts in near complete stealth and is an expert at avoiding detection.

.Maas Virus

The .Maas Virus will leave this message in a .txt file.

And oftentimes it takes quite some time for a malicious variant of this type to do its dirty job. How this happens is the virus first scans the system for specific files types, and these can be quite numerous including all the most popular and commonly used file formats. Then it begins to create encrypted copies of these files – one by one. And at the same time, it also deletes the originals of the files.

So as a result, the victim users are left with a bunch of encrypted copies of their original files that cannot be read or opened by any existing software. Hence, they’ve ultimately been denied access to their very own data. And to top it all off, they will likely be greeted by a ransom note left open on the desktop of the computer to inform them of the terrible process that has just taken place right under their noses.

The ransom note will usually also include information regarding what the victims are expected to do, should they want to recover their files again. And in most cases, this is the transfer of a rather substantial amount of money to some cryptocurrency wallet – also usually within a given (short) timeframe. The criminals behind the virus promise to send you a decryption key in exchange for this money. And this key, in turn, is what is to solve the encryption.

You are, of course, free to cooperate with them and send them all the money in the world if you choose to. But we would recommend trying alternative file recovery means first and seeing if those might help instead. We have listed several such means in the second part of the removal guide below. However, those must only be attempted after you’ve completed the first part – namely the removal of .Maas itself. This will ensure that no recovered files get encrypted afterwards as well.

The .Maas virus

The .Maas virus targets a wide range of file types and can therefore rob you of a large amount of valuable data. If your computer has been infected with the .Maas virus, it is highly important that you remove it as soon as possible.

.Maas, .Zida and Masodas are among the most dangerous types of malware out there, and there’s good reason for them to be seen as such. Aside from the fact that they typically don’t exhibit any symptoms, on top of that ransomware generally doesn’t even trigger a response from an active antivirus program. And some of the more elaborate versions of this malicious software category can even disable antivirus tools.

The .Maas file encryption

The .Maas file encryption is actually a benign process in and of itself and that’s why most antivirus programs aren’t bothered by it. However, the .Maas file encryption is very complex and used for an evil end, which is why ransomware attacks are best prevented than battled post-infection.

.Maas Virus

Once the .Maas Virus has infected your system it will start encrypting your files.



Name .Maas
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 Not Available
Detection Tool

.Maas Virus Removal

.Maas 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).

.Maas Virus



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

.Maas Virus

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

.Maas 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: https://howtoremove.guide/online-virus-scanner/

Scan Results

Virus Scanner Result
.Maas VirusClamAV
.Maas VirusAVG AV
.Maas 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.

.Maas 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:

.Maas 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:

.Maas 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.

.Maas 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!

.Maas Virus 

How to Decrypt .Maas 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


Violet George

Violet is an active writer with a passion for all things cyber security. She enjoys helping victims of computer virus infections remove them and successfully deal with the aftermath of the attacks. But most importantly, Violet makes it her priority to spend time educating people on privacy issues and maintaining the safety of their computers. It is her firm belief that by spreading this information, she can empower web users to effectively protect their personal data and their devices from hackers and cybercriminals.

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