.Lisp Virus


.Lisp is a ransomware cryptovirus that can encrypt any digital data that you keep on your computer without your knowledge. If you unexpectedly detect a message on your computer that asks for a ransom to be paid to have access to your files, you will know that you have been infected with .Lisp.


The .Lisp ransom note

If you are on this page, you are probably interested to know if there is any way around this ransomware infection and whether you can decrypt your files without paying a ransom. Fortunately, this is exactly what you will find on this page. Our “How to remove” team has dedicated the whole article to .Lisp and its specifics and has published a comprehensive guide that explains how to detect and remove this highly dangerous ransomware infection. Aside from the manual instructions, you will find a professional removal tool that will help you scan your entire device for malware and remove any hidden malicious files. There is also a section with file-recovery suggestions which provide alternatives to the ransom payment that the hackers behind .Lisp, .Sglh or .Vvoa, demand from you.

The .Lisp virus

The .Lisp virus is a disgusting infection from the ransomware class that is used for money extortion. If your computer has been infected with the .Lisp virus, the files that you store on your hard disk will secretly become encrypted and you won’t be able to use them until you pay a ransom for their decryption key.

The job of the cryptovirus is to render the victims’ most valuable and most commonly used files inaccessible by converting them into a complex combination of symbols that cannot be recognized by any program. In this way, it prevents the users from having access to the encrypted files and asks them to “purchase” a uniquely generated decryption key from the hackers behind the infection. Even the file extension of the affected files may be replaced so that they become unreadable by the system. In the end, the ransomware will generate a notice on the screen of the victims which will provide them with instructions on how to pay the ransom. In exchange for the money, the crooks promise that they will send the decryption key. The fraudsters typically ask for Bitcoins, since this is an untraceable online currency that lets them remain anonymous but once they get the money, they rarely keep their promise and simply vanish without sending any file-recovery solution back to the victims.

The .Lisp file encryption

The .Lisp file encryption is a specially generated sequence of symbols that can only be reverted with the help of a specific key for decryption. The .Lisp file encryption can be applied to documents, databases, archives, videos and audios, images and all kinds of data you store on the infected computer.

.Lisp file

The .Lisp file virus

Since paying the ransom doesn’t give any guarantee about the successful recovery of your files, our suggestion is that you explore other file-recovery options such as the ones in the removal guide below. You can also use personal backup copies from a cloud or external drive. Not less important is to remove the ransomware from the computer because if you don’t do so, any new data that you create or recover may get encrypted again.


Name .Lisp
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

anti-malware offerOFFER *Read more details in the first ad on this page, EULA, Privacy Policy, and full terms for Free Remover.

Remove .Lisp Ransomware


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).



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


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

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.
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    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.


    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:

    hosts_opt (1)

    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:


    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.


    Type Regedit in the windows search field and press Enter. Once 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!


    How to Decrypt .Lisp 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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