Guesswho Virus


Guesswho is complex malware used primarily to keep a user from accessing their important information. The ultimate goal of Guesswho is to extort money from its victims by encoding their most used files and demanding a ransom payment for their decryption.

Guesswho Virus

The Guesswho Virus will encrypt your files

A decryption key consisting of a private and a public code is the only way to decrypt the files that Guesswho has encrypted. Once the encryption process ends, the public code is given instantly. However, in order to obtain the private code of the decryption key, the victim must pay a ransom. If not, the hackers typically threaten to permanently erase the affected data or double the required ransom amount. If you have become a victim of Guesswho, you are not dealing with a regular virus but with a very sophisticated Ransomware infection. Therefore, the methods you should use to combat it should also be carefully selected. Moreover, unless you remove Guesswho from your computer, you most likely will be unable to create and store new files without them being encrypted instantly. That’s why we suggest you study the information below and make an informed decision on what to do next.

The Guesswho virus

The Guesswho virus is a file-encrypting Ransomware designed to encode user data and keep it hostage for a ransom. The goal of the Guesswho virus is to make its victims pay a fixed amount of money to some anonymous cyber criminals for the restoration of the encrypted files.

Ransom-demanding threats such as Guesswho, Nlah, Pezi could be distributed in several ways: by drive-by downloads, websites corrupted by malware, false notifications, malicious advertisements, infected torrents, video streaming pages, spam emails and even attachments that may come from a friend.

The Guesswho file encryption

The Guesswho file encryption is a stealthy process initiated by the Guesswho Ransomware. The purpose of the Guesswho file encryption is to convert the users’ files into unreadable bits of data so that a ransom can be demanded for their decryption.

Unfortunately, the Guesswho file encryption is not easily reversed. The decryption normally should be done using a special key that comprises of two elements – one public (accessible instantly) and one private, for which the victims are required to pay a ransom. If your files have been locked by Guesswho, you may think it’s wise to simply pay the ransom. However, this is a dangerous option that puts at risk your money without a guarantee that your files will really be recovered. In the end, the crooks behind the Ransomware may disappear without sending you the private decryption key and you won’t be able to do anything to get your money or your files back.

Advising a professional, therefore, is a much cleverer idea. A person with some experience with such viruses may be extremely helpful and may be just what you need to successfully fight the Guesswho infection. In reality, however, contacting a professional may also be costly. Therefore, one of the most easily available alternatives is to use a free removal guide (like the one below) and try to remove the infection on your own. The removal of this virus will prevent you from facing additional malicious actions from criminals. Restoring your files, however, may require some additional steps. You can use the guidelines here in order to delete the virus and try to retrieve some of your data as well.


Name Guesswho
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

Remove Guesswho Ransomware

Guesswho 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).

Guesswho Virus


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

Guesswho Virus

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.
Guesswho Virus
Drag and Drop File Here To Scan
Guesswho Virus
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.

    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.

    Guesswho 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:

    Guesswho 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:

    Guesswho 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.

    Guesswho 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!

    Guesswho Virus 

    How to Decrypt Guesswho 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.


    • im infected whit this ransomewares and still loking for a decryptor tools can any one help me i was remove virus from my computer by formation my first SSD that contain only OS, but i can’t open any file on my data HDD any suggestion will be appreciated thx

      • Hi so9rat, look for a decryption tool in our article, if you can’t find one then that means this ransomware variant is still undecryptable.

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