Lmas Virus


Lmas is a stealthy computer infection which belongs to the Ransomware family of viruses. Threats of Lmas make their victims files inaccessible via encryption and demand payment for the release of the affected data.


The Lmas Virus ransom note

If you are among the numerous Lmas or Urnb victims, you are probably aggravated and frustrated by the fact that you are no longer able to open any of your personal data present on the infected machine. We understand your frustration – it can be very unpleasant to get your data locked by a Ransomware, especially if the files that it has targeted are important to your work or education, or if they hold high sentimental value for you. However, acting out of desperation is never the answer – in most cases, all this would do is make things even worse for you. Therefore, it is essential that you stay collected and read the information from this post in order to learn what you options are, what pros and cons they have, and how you could make the optimal decision with regard to what to do in your particular case.

The Lmas virus

Lmas is a virus program intended to keep your files inaccessible unless you pay to get them released. Infections like the Lmas virus are known as Ransomware, and they employ file-encryption to keep your data sealed.

After a Ransomware attacks the computer, it initially stays hidden in the system and it takes its time to locate and lock all files in the computer that belong to certain predefined formats. Usually, most Ransomware threats targeted data formats that are commonly used, and oftentimes hold sensitive and important info. Those could be different text document formats, image files, audio and video files, spreadsheets, presentations, schematics, 3d models, and so on. 

Once the virus locates those files, it starts an encryption process that quickly converts the files into unreadable pieces of data. The only way to make the files accessible again is by applying a special key that is unique for each encryption instance. What this means is that you cannot use another victim’s key – only the key generated for your computer specifically will allow you to open your files. Of course, this key is in possession of the hackers, and they want you to pay money to get it.

The Lmas file extension

The Lmas file extension is a suffix that renames your files during the encryption process. Regular programs dont recognize the Lmas file extension, which is what renders all affected data inaccessible.

Lmas Virus File

The Lmas Virus File

We, as well as most other security researchers, would advise Ransomware victims like you to hold off the payment. Sending the requested money might indeed get you the key for your files, but it may also turn out to be an utter and pointless waste of resources. You got to keep in mind that there is nothing you could do if the hackers decide not to send you the key after you pay them. Indeed, there are quite a few instances of this happening to Ransomware victims, so we advise you to at least try some of the other options that might be available to you. 

Of course, if nothing else works, you can still pay the ransom if you are willing to risk your money in this way. However, you must remember to still remove the virus from your computer, and the instructions below will show you how. Keep in mind that if you don’t get rid of Lmas, it might encrypt new files you download or create in your computer. Furthermore, it might also infect external devices you connect to the PC. If you have external backups, make sure to only connect them to the machine after you are hundred percent certain the malware is gone. In case you cannot find any backed up data, you should try the suggestions from the recovery section of the guide – we cannot guarantee they will be effective, but you should still try them before you think about paying the ransom.


Name Lmas
Type Ransomware
Detection Tool

Remove Lmas Ransomware


For the easy and flawless completion of the instructions in this guide, we recommend that you Bookmark this page and enter your computer in Safe Mode.



Ransomware threats like Lmas tend to run dangerous processes on the computer. In order to remove the virus, you have to detect these processes, stop them, and delete their related files from their file locaiton. This can be done by going to the Windows Task Manager (press CTRL + SHIFT + ESC keys simultaneously to open the Manager) and opening the Processes Tab.

Once you get there, carefully look at the listed processes and detect those that operate oddly, use too many system resources or look dangerous and unrelated to anything that you are normally running on your computer.


Right-click on every questionable process and from the menu that pops up click on Open File Location. Drag the files from that location in the free online virus scanner that is available here and run a file check:

Each file will be scanned with up to 64 antivirus programs to ensure maximum accuracy
This scanner is free and will always remain free for our website's users.
This file is not matched with any known malware in the database. You can either do a full real-time scan of the file or skip it to upload a new file. Doing a full scan with 64 antivirus programs can take up to 3-4 minutes per file.
Drag and Drop File Here To Scan
Drag and Drop File Here To Scan
Analyzing 0 s
Each file will be scanned with up to 64 antivirus programs to ensure maximum accuracy
    This scanner is based on VirusTotal's API. By submitting data to it, you agree to their Terms of Service and Privacy Policy, and to the sharing of your sample submission with the security community. Please do not submit files with personal information if you do not want them to be shared.

    When the check completes, end the processes whose files get flagged are infected and delete their folders from the file location. 


    Many ransomware infections don’t come alone. They typically sneak into the computer with the help of other malware. That’s why it is a good idea to check if your computer is hacked. To do that, you need to open the Hosts file by pressing the Start Key and R and pasting the following line in the Run window that appears:

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

    Don’t forget to click the OK button to run the command that you have pasted. If your computer is hacked, when you reach Localhost, you will see a lot of questionable IPs below just as it is explained on the image here:

    hosts_opt (1)

    Important! Please leave us a comment below this post if you see suspicious IPs below “Localhost” in your Hosts file.

    Next, go to the windows search field and type msconfig. Hit the Enter key and the System Configuration app will open immediately. 


    Select the Startup tab and look for entries that seem to be related to Lmas or look suspicious and have “Unknown” as Manufacturer. Remove the checkmark before these entries and leave checked only the entries that are legitimate. If you are not sure about a given process, research it before you do anything.


    Threats like Lmas may make changes in the Registry of the infected computer and may add some malicious directories that need to be detected and deleted if you want to successfully remove the virus. That’s why, after you complete the steps above, open the Registry Editor by typing Regedit in the windows search field and pressing the Enter key. After that, use the Find function (press CTRL and F keys together to open it) and type the exact Name of the ransomware threat in the empty text field. Click on the Find Next button to search the registry for malicious entries. When the search completes, delete the malicious entries that are found. When no more results are found with the Find function, it is time to manually type each of the following in the Windows Search Field:

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

    In each of the listed folders, look for recently added files. Delete the content of the Temp folder. 

    Attention! Be very careful with the deletions in the Registry Editor! Deletion of the wrong entry may lead to serious system corruption.

    If you have questions or concerns, please leave us a comment in order to avoid involuntary system damage.


    How to Decrypt Lmas files

    After you remove Lmas from the infected computer, please check out the comprehensive (and daily updated) guide that may help you decrypt some of your files for free.


    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.


      • Hi tommy, it seems you have fallen victim to a ransomware attack, unfortunately this is one of the latest malware threats and decryption is not yet possible. Try following the removal guide in this article to remove the virus in your system and then it would be safe to backup all of the encrypted files to an external HDD and wait for a decryption tool to be released.

    Leave a Comment