Oonn Virus


.Oonn is a ransomware virus that can make all personal information stored on your computer inaccessible. .Oonn is supposed to chase you for a ransom payment that you are expected to pay to regain access to your encrypted files.

Oonn Virus

The .Oonn Virus will show you this message in a .txt file.

Viruses of the ransomware type like .Oonn, .Nile and Masodas use the method of file encryption to restrict access to certain information stored on the infected computer, so that the victims are unable to access it. According to the criminals behind the infection, the only way to regain access is by paying a certain sum of money as a ransom for a specially generated decryption key that is in the hands of the hackers. The criminals typically place a pop-up notification or a text file on the screen of the attacked computer where they provide instructions for the payment and a deadline. The message says you have to pay a fixed amount of money or you will never get the decryption key for your locked info. Normally, the payment is demanded in Bitcoins which is a cryptocurrency that is difficult to trace and helps the hackers hide their true identities from the authorities.

Sadly, there is no assurance that you will obtain the promised key even after you pay the ransom amount, that’s why it is best not to send your money right away but explore some alternative solutions that could help you remove .Oonn and do something about your encrypted files.

The .Oonn virus

The .Oonn virus is a malicious piece of software that is used for an extortion scheme. The .Oonn virus is designed to apply a powerful encryption to commonly used digital files and to demand a ransom payment for providing the victims with a decryption key.

If the victim refuses to pay, they are in danger of never accessing or using their files again. But even if you pay the ransom, as we mentioned in the paragraph above, this doesn’t guarantee that you will be given the correct decryption key for your files. The hackers who keep it may decide to ask for more money from you, or they may simply vanish with the money you sent without providing you with any decryption solution. It is therefore almost always best to not make the ransom payment or at least keep it as a very last resort and concentrate first on the possible options that do not require transferring money to cyber criminals who want to put you under pressure.

The .Oonn file decryption

The .Oonn file decryption is a method of file recovery that requires you to use the decryption key generated by the ransomware to regain access to your information. The only way to obtain the .Oonn file decryption key is to pay ransom to the hackers but sometimes, alternative solutions may also be available.

Oonn Virus

Once .Oonn has infected you it will start encrypting your files.

In the removal guide below we provide instructions on how to remove .Oonn which is an essential step if you are planning to use your computer after the ransomware attack. Once the virus is removed, this prevents it from encrypting new files or locking the files that you eventually will recover. In the second section of the guide you will find some file-restoration suggestions that may be worth a try. You should check them out to see if any of them can help you avoid the ransom payment.


Name .Oonn
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

.Oonn Ransomware Removal

Oonn 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).

Oonn Virus


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

Oonn 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.
Oonn Virus
Drag and Drop File Here To Scan
Oonn Virus
Analyzing 0 s
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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.

    Oonn 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:

    Oonn 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:

    Oonn 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.

    Oonn Virus

    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!

    Oonn Virus

    How to Decrypt .Oonn 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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