THREAT REMOVAL

.fun Files Virus – How to Remove It and Decrypt Files (Free)

how-to-remove-.fun-crypto-virus-jigsaw-ransomware-and-decrypt-fun-files-sensorstechforum-guide

This is an article that provides specific details on .fun files virus infection as well as removal and data decryption instructions.

After the detection of several Jigsaw ransomware iterations this month other three versions of the ransomware has been spotted in active attack campaigns. They are all associated with the extension .fun and as typical data locker ransomware all aim to blackmail victims into paying a ransom for decryption of valuable data. In case of infection with any of them, your valuable files will be encrypted and marked with the specific extension. In addition, a ransom image will change your desktop wallpaper and a ransom message will attempt to trick you into following instructions by hackers.

Threat Summary

Name .fun Files Virus
Type Ransomware, Cryptovirus
Short Description A data locker ransomware that utilizes sophisticated cihper algorithm to encrypt important files on stored on the infected computer. Hackers become able to extort a ransom in exchange for a decryption solution.
Symptoms Files with valuable information are encoded and renamed with .fun extension. A ransom image changes the desktop wallpaper. Specific ransom message states that .fun files will be restored only if a ransom is paid.
Distribution Method Spam Emails, Email Attachments
Detection Tool See If Your System Has Been Affected by malware

Download

Malware Removal Tool

User Experience Join Our Forum to Discuss .fun Files Virus.
Data Recovery Tool Windows Data Recovery by Stellar Phoenix Notice! This product scans your drive sectors to recover lost files and it may not recover 100% of the encrypted files, but only few of them, depending on the situation and whether or not you have reformatted your drive.

.fun Files Virus – Distribution

The infection code of .fun files virus is most likely being spread with the help of malicious e-mail spam campaigns. E-mails used for vicious purposes usually contain one or more of the following components:

  • A link that lands on compromised web page set to download and execute the infection file directly on the PC.
  • A malicious file attachment masked as a legitimate document and uploaded in a .rar or .zip archive. Such a file could be set to evade detection and this way tricks you into allowing the ransomware to start on your PC.

Along with this spread technique, other methods like malicious exploit kits, fake updates notifications and infected installers of third-party programs may be also used to scam you to allow the infection to plague your computer system.

.fun Files Virus – Overview

After a few other Jigsaw iterations that were detected for a month period among which are .invaded, .lockedgood, and .pleaseCallQQ files viruses, other three versions of the ransomware has been released in active attack campaigns. They are all associated with the extension .fun and as typical data locker ransomware all aim to blackmail victims into paying a ransom for decryption of valuable data.

By opening various Windows system files, .fun files virus becomes able to utilize its payload. Then specific parameters of its code initiate sequence of system settings modifications that lead to the successful manipulation of the functionalities of legitimate processes. This way the ransomware could evade detection while triggering additional malicious files created directly on the system or dropped from its command and control server.

As of the folders where malicious files associated with this iteration of Jigsaw ransomware reside they may be all of the following:

  • %AppData%
  • %Local%
  • %LocalLow%
  • %Roaming%
  • %Temp%
  • %Roaming%

Some of the files associated with the so-called .fun crypto virus are likely to be designed to access Registry Editor in order to corrupt predefined registry keys. These keys are usually Run and RunOnce and this could be explained by the fact that they manage the automatic execution of all processes needed for the regular system load. So by adding its malicious values under these keys ransomware files infect the system each time it is started.

A trait that enables you to reveal the presence of the threat on your computer is a specifically crafted ransom image. It is set to replace your current desktop wallpaper after the completion of the data encryption stage. There are three different images that are associated with this Jigsaw .fun files virus. So in case that you find your background changes to an image that depicts crossbones, a fierce digital dog or a crying girl then your PC has been infected by this ransomware of Jigsaw family.

Here you could see all of the images that may appear on your screen in case that .fun files virus has compromised your computer system:

Jigsaw .fun ransomware virus crossbones background ransom image sensorstechforum

Jigsaw .fun ransomware virus fierce dog ransom background sensorstechforum

.fun files virus Jigsaw ransomware crying girl ransom image sensorstechforum

Yet another trait the threat aims to show you is a ransom note with a message from cyber criminals. Each ransom image is associated with different ransom message. The one that depicts crossbones is written in English. The fierce digital dog is accompanied by a ransom message in French. While the image that shows a sad or crying girl appears on screen along with a ransom message in Polish.

With such messages, attackers attempt to convince you that you have no other choice than paying them a specific ransom probably demanded in Bitcoin in order to decrypt corrupted .fun files. However, what they claim is not true as a free decryption tool was released soon after security researchers cracked the code of Jigsaw ransomware. So forgot about the written in the message and keep reading to find this free data recovery solution.

.fun Files Virus – Encryption Process

The data encryption stage happens with the help of sophisticated cipher algorithm that transforms parts of the original code of predefined types of files. After these changes occur the information stored by corrupted files remains inaccessible for an unspecified period of time.

As of the files that may be encrypted by .fun crypto viruses they may be all your:

  • Audio files
  • Video files
  • Document files
  • Image files
  • Backup files
  • Banking credentials, etc

This means that an infection with one of these iterations of Jigsaw ransomware could lead to all your important data locked and renamed with the extension .fun. Here is how a file named project1.docx would be renamed once encrypted by the ransomware:

document file encrypted by fun files virus jigsaw ransomware sensorstechforum

Happily, the code of Jigsaw ransomware was successfully cracked by the security researcher Michael Gillespie and the steps below provide a download link of the free decryption tool he released.

Jigsaw Ransomware Decryption Instructions

Before starting to download the decryptor and learning how to use it, we must have you know that this may take some time. This is why it is advisable to make your computer run permanently without automatically hibernating or shutting down automatically after some time. To do this, please follow the bellow-mentioned instructions:

1: Click on the battery icon in your system tray (next to the digital clock) in Windows and then click on More Power Options.
2: The Power Options menu will appear. In your power plan click on Change Plan Settings.
3: In your plan’s settings make sure you set “Turn off the display” and “Put computer to sleep” to “Never” from the drop down minutes menu.
4: Click on “Change Advanced Plan Settings” and click to expand the “Hard Disk” option in the list there.
5: From there, set the power settings (On Battery and Powered On) to “Never”.

After this has been completed, then you should start the decryption process itself. Even though nothing should go wrong, we strongly advise you to make sure that your files and computer are safe. To do this, you may either scan your computer with an advanced anti-malware program or create copies of the encrypted files and try to decrypt them from a safe PC, just in case something goes wrong.

Download

Malware Removal Tool


Spy Hunter scanner will only detect the threat. If you want the threat to be automatically removed, you need to purchase the full version of the anti-malware tool.Find Out More About SpyHunter Anti-Malware Tool / How to Uninstall SpyHunter

After you have secured your computer, you should follow these instructions to download, install and use Jigsaw Decryptor by demonslay335:

Step 1: Download Jigsaw Decryptor from the button below and open the .ZIP file

Download

JigSaw Decrypter


1-jigsawdecrypter-download-zip-main-sensorstechforum

Step 2: Extract the JigSawDecrypter.exe file whenever you feel comfortable to easily access it:

2-jigsaw-decrypter-exe-file-desktop-sensorstechforum

Step 3: Right-Click on it after which click on Run as Administrator… and you should see its primary interface:

3-jigsaw-decrypter-sensorstechforum-main-interface

Step 4: From there, click on the Select Directory button and choose a directory the files in which you want decrypted:

4-jigsaw-choose-files-to-decrypt-sensorstechforum

Step 5: Click on the button Ok after selecting and then click on Decrypt Files and wait for the decryption process to be complete:

5-jigsaw-decrypter-decrypt-files-sensorstechforum

Bear in mind that this process may take some time, it really depends on the files, their size and other factors, like the ransomware variant and its modification. This is why we strongly suggest you to take into consideration leaving your computer to work it out while you are not using it.

Conclusion

As a bottom line, we strongly advise users who have been infected by the JigSaw ransomware to follow these advises to prevent this mess from happening in the near future:

Advice 1: Make sure to read our general protection tips and try to make them your habit and educated others to do so as well.
Advice 2: Install an advanced anti-malware program that has an often updated real-time shield definitions and ransomware protection.

Advice 3: Seek out and download specific anti-ransomware software which is reliable.

Advice 4: Backup your files using one of the methods in this article.

Advice 5: : Make sure to use a secure web browser while surfing the world wide web.

Gergana Ivanova

Gergana Ivanova

Gergana has a bachelor's degree in Marketing. She has been with the STF team for five years, researching malware, reporting on the latest computer infections, and following digital marketing trends.

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Attention! SensorsTechForum strongly recommends that all malware victims should look for assistance only by reputable sources. Many guides out there claim to offer free recovery and decryption for files encrypted by ransomware viruses. Be advised that some of them may only be after your money.

As a site that has been dedicated to providing free removal instructions for ransomware and malware since 2014, SensorsTechForum’s recommendation is to only pay attention to trustworthy sources.

How to recognize trustworthy sources:

  • Always check "About Us" web page.
  • Profile of the content creator.
  • Make sure that real people are behind the site and not fake names and profiles.
  • Verify Facebook, LinkedIn and Twitter personal profiles.


OFFER

REMOVE IT NOW (PC)
with Anti-Malware
We recommend you to download SpyHunter and run free scan to remove all virus files on your PC. This saves you hours of time and effort compared to doing the removal yourself.
SpyHunter 5 free remover allows you, subject to a 48-hour waiting period, one remediation and removal for results found. Read EULA and Privacy Policy


Windows Mac OS X

How to Remove .fun Files Virus from Windows.


Step 1: Boot Your PC In Safe Mode to isolate and remove .fun Files Virus

OFFER

Manual Removal Usually Takes Time and You Risk Damaging Your Files If Not Careful!
We Recommend To Scan Your PC with SpyHunter

Keep in mind, that SpyHunter’s scanner is only for malware detection. If SpyHunter detects malware on your PC, you will need to purchase SpyHunter's malware removal tool to remove the malware threats. Read our SpyHunter 5 review. Click on the corresponding links to check SpyHunter's EULA, Privacy Policy and Threat Assessment Criteria

1. Hold Windows key() + R


2. The "Run" Window will appear. In it, type "msconfig" and click OK.


3. Go to the "Boot" tab. There select "Safe Boot" and then click "Apply" and "OK".
Tip: Make sure to reverse those changes by unticking Safe Boot after that, because your system will always boot in Safe Boot from now on.


4. When prompted, click on "Restart" to go into Safe Mode.


5. You can recognise Safe Mode by the words written on the corners of your screen.


Step 2: Uninstall .fun Files Virus and related software from Windows

Here is a method in few easy steps that should be able to uninstall most programs. No matter if you are using Windows 10, 8, 7, Vista or XP, those steps will get the job done. Dragging the program or its folder to the recycle bin can be a very bad decision. If you do that, bits and pieces of the program are left behind, and that can lead to unstable work of your PC, errors with the file type associations and other unpleasant activities. The proper way to get a program off your computer is to Uninstall it. To do that:


1. Hold the Windows Logo Button and "R" on your keyboard. A Pop-up window will appear.


2. In the field type in "appwiz.cpl" and press ENTER.


3. This will open a window with all the programs installed on the PC. Select the program that you want to remove, and press "Uninstall"
Follow the instructions above and you will successfully uninstall most programs.


Step 3: Clean any registries, created by .fun Files Virus on your computer.

The usually targeted registries of Windows machines are the following:

  • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run
  • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
  • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunOnce
  • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunOnce

You can access them by opening the Windows registry editor and deleting any values, created by .fun Files Virus there. This can happen by following the steps underneath:

1. Open the Run Window again, type "regedit" and click OK.


2. When you open it, you can freely navigate to the Run and RunOnce keys, whose locations are shown above.


3. You can remove the value of the virus by right-clicking on it and removing it.
Tip: To find a virus-created value, you can right-click on it and click "Modify" to see which file it is set to run. If this is the virus file location, remove the value.

IMPORTANT!
Before starting "Step 4", please boot back into Normal mode, in case you are currently in Safe Mode.
This will enable you to install and use SpyHunter 5 successfully.

Step 4: Scan for .fun Files Virus with SpyHunter Anti-Malware Tool

1. Click on the "Download" button to proceed to SpyHunter's download page.


It is recommended to run a scan before purchasing the full version of the software to make sure that the current version of the malware can be detected by SpyHunter. Click on the corresponding links to check SpyHunter's EULA, Privacy Policy and Threat Assessment Criteria.


2. After you have installed SpyHunter, wait for it to update automatically.

SpyHunter5-update-2018


3. After the update process has finished, click on the 'Malware/PC Scan' tab. A new window will appear. Click on 'Start Scan'.

SpyHunter5-Free-Scan-2018


4. After SpyHunter has finished scanning your PC for any files of the associated threat and found them, you can try to get them removed automatically and permanently by clicking on the 'Next' button.

SpyHunter-5-Free-Scan-Next-2018

If any threats have been removed, it is highly recommended to restart your PC.

Step 5 (Optional): Try to Restore Files Encrypted by .fun Files Virus.

Ransomware infections and .fun Files Virus aim to encrypt your files using an encryption algorithm which may be very difficult to decrypt. This is why we have suggested a data recovery method that may help you go around direct decryption and try to restore your files. Bear in mind that this method may not be 100% effective but may also help you a little or a lot in different situations.

1. Download the reccomended Data Recovery software by clicking on the link underneath:

Simply click on the link and on the website menus on top, choose Data Recovery - Data Recovery Wizard for Windows or Mac (depending on your OS), and then download and run the tool.


Windows Mac OS X

Get rid of .fun Files Virus from Mac OS X.


Step 1: Uninstall .fun Files Virus and remove related files and objects

OFFER
Manual Removal Usually Takes Time and You Risk Damaging Your Files If Not Careful!
We Recommend To Scan Your Mac with SpyHunter for Mac
Keep in mind, that SpyHunter for Mac needs to purchased to remove the malware threats. Click on the corresponding links to check SpyHunter’s EULA and Privacy Policy


1. Hit the ⇧+⌘+U keys to open Utilities. Another way is to click on “Go” and then click “Utilities”, like the image below shows:


2. Find Activity Monitor and double-click it:


3. In the Activity Monitor look for any suspicious processes, belonging or related to .fun Files Virus:

Tip: To quit a process completely, choose the “Force Quit” option.


4. Click on the "Go" button again, but this time select Applications. Another way is with the ⇧+⌘+A buttons.


5. In the Applications menu, look for any suspicious app or an app with a name, similar or identical to .fun Files Virus. If you find it, right-click on the app and select “Move to Trash”.


6: Select Accounts, after which click on the Login Items preference. Your Mac will then show you a list of items that start automatically when you log in. Look for any suspicious apps identical or similar to .fun Files Virus. Check the app you want to stop from running automatically and then select on the Minus (“-“) icon to hide it.


7: Remove any left-over files that might be related to this threat manually by following the sub-steps below:

  • Go to Finder.
  • In the search bar type the name of the app that you want to remove.
  • Above the search bar change the two drop down menus to “System Files” and “Are Included” so that you can see all of the files associated with the application you want to remove. Bear in mind that some of the files may not be related to the app so be very careful which files you delete.
  • If all of the files are related, hold the ⌘+A buttons to select them and then drive them to “Trash”.

In case you cannot remove .fun Files Virus via Step 1 above:

In case you cannot find the virus files and objects in your Applications or other places we have shown above, you can manually look for them in the Libraries of your Mac. But before doing this, please read the disclaimer below:

Disclaimer! If you are about to tamper with Library files on Mac, be sure to know the name of the virus file, because if you delete the wrong file, it may cause irreversible damage to your MacOS. Continue on your own responsibility!

1: Click on "Go" and Then "Go to Folder" as shown underneath:

2: Type in "/Library/LauchAgents/" and click Ok:

3: Delete all of the virus files that have similar or the same name as .fun Files Virus. If you believe there is no such file, do not delete anything.

You can repeat the same procedure with the following other Library directories:

→ ~/Library/LaunchAgents
/Library/LaunchDaemons

Tip: ~ is there on purpose, because it leads to more LaunchAgents.


Click the button below below to download SpyHunter for Mac and scan for .fun Files Virus:


Download

SpyHunter for Mac



Step 3 (Optional): Try to Restore Files Encrypted by .fun Files Virus.

Ransomware infections and .fun Files Virus aim to encrypt your files using an encryption algorithm which may be very difficult to decrypt. This is why we have suggested a data recovery method that may help you go around direct decryption and try to restore your files. Bear in mind that this method may not be 100% effective but may also help you a little or a lot in different situations.

1. Download the reccomended Data Recovery software by clicking on the link underneath:

Simply click on the link and on the website menus on top, choose Data Recovery - Data Recovery Wizard for Windows or Mac (depending on your OS), and then download and run the tool.


.fun Files Virus FAQ

What is .fun Files Virus ransomware and how does it work?

.fun Files Virus is a ransomware infection - the malicious software that enters your computer silently and blocks either access to the computer itself or encrypt your files.

Many ransomware viruses use sophisticated encryption algorithm how to make your files inaccessible. The goal of ransomware infections is to demand that you pay a ransom payment to get access to your files back.

How does .fun Files Virus ransomware infect my computer?

Via several ways..fun Files Virus Ransomware infects computers by being sent via phishing e-mails, containing virus attachment.

This attachment is usually masked as an important document, like an invoice, bank document or even a plane ticket and it looks very convincing to users.

After you download and execute this attachment, a drive-by download occurs and your computer is infected with the ransomware virus.

Another way, you may become a victim of .fun Files Virus is if you download a fake installer, crack or patch from a low reputation website or if you click on a virus link. Many users report getting a ransomware infection by downloading torrents.

How to open ..fun Files Virus files?

You can't. At this point the ..fun Files Virus files are encrypted. You can only open them once they are decrypted.

Decryptor did not decrypt my data. What now?

Do not panic and backup the files. If a decryptor did not decrypt your ..fun Files Virus files successfully, then do not despair, because this virus is still new.

One way to restore files, encrypted by .fun Files Virus ransomware is to use a decryptor for it. But since it's a new virus, advised that the decryption keys for it may not be out yet and available to the public. We will update this article and keep you posted as soon as this decryptor is released.

How Do I restore "..fun Files Virus" files (Other Methods)?

Yes, sometimes files can be restored. We have suggested several file recovery methods that could work if you want to restore ..fun Files Virus files.

These methods are in no way 100% guarantee that you will be able to get your files back. But if you have a backup, your chances of success are much greater.

How do I get rid of .fun Files Virus ransomware virus?

The safest way and the most efficient one for the removal of this ransomware infection is the use a professional anti malware software. It will scan for and locate .fun Files Virus ransomware and then remove it without causing any additional harm to your important ..fun Files Virus files.

Also, keep in mind that viruses like .fun Files Virus ransomware also install Trojans and keyloggers that can steal your passwords and accounts. Scanning your computer with an anti-malware software will make sure that all of these virus components are removed and your computer is protected in the future.

What to Do If nothing works?

There is still a lot you can do. If none of the above methods seem to work for you, then try these methods:

  • Try to find a safe computer from where you can can login on your own line accounts like One Drive, iDrive, Google Drive and so on.
  • Try to contact your friends, relatives and other people so that they can check if they have some of your important photos or documents just in case you sent them.
  • Also, check if some of the files that were encrypted it can be re-downloaded from the web.
  • Another clever way to get back some of your files is to find another old computer, a flash drive or even a CD or a DVD where you may have saved your older documents. You might be surprised what will turn up.
  • You can also go to your email account to check if you can send any attachments to other people. Usually what is sent the email is saved on your account and you can re-download it. But most importantly, make sure that this is done from a safe computer and make sure to remove the virus first.

More tips you can find on our forums, where you can also asks any questions about your ransomware problem.

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