FUN Virus ๐Ÿ” (.FUNNY Files) โ€” How to Remove?

Written by Brendan Smith

The Fun virus belongs with the ransomware type of infection. A harmful program of such sort encrypts all user’s data on the PC (photos, text files, excel tables, music, videos, etc) and appends its own extension to every file, creating the readme.txt text files in every directory which contains the encrypted files.

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Fun virus: what is known so far?

Fun adds its own .funny extension to every file’s name. For instance, an image named “photo.jpg” will be turned into “photo.jpg.funny”. In the same manner, the Excel file named “table.xlsx” will be renamed to “table.xlsx.funny”, and so on.

In each directory that contains the encrypted files, a readme.txt file will be found. It is a ransom money memo. It contains information about the ways of paying the ransom and some other remarks. The ransom note usually contains a description of how to buy the decryption tool from the tamperers. You can get this decryptor after contacting [email protected] by email. That is how they do it.

Fun Overview:

Name Fun Virus
Extension .funny
Ransomware note readme.txt
Contact [email protected]
Detection Win32/Filecoder.Avaddon.H, TrojanDropper:Win32/BcryptInject.A!MTB, BScope.TrojanRansom.Reveton
Symptoms Your files (photos, videos, documents) have a .funny extension and you can’t open them.
Fix Tool See If Your System Has Been Affected by Fun virus

The readme.txt file accompanying the Fun malware provides the following frustrating information:

You became victim of fun ransomware!
Your files have been encrypted using RSA-2048 and AES-256 ciphers, wich means you cannot acces them anymore.
You can read arcticles about encryptions here:
hxxps://wikipedia.org/wiki/RSA_(cryptosystem)
hxxps://wikipedia.org/wiki/Advanced_Encryption_Standard
How do i get my files back?
In order to get you files back you have to purchase or personal decryptions software, the prices waries on data value and company size.
How do i pay?
We ONLY accept bitcoin payment. The address is seen below, if you do not know how to buy bitcoin go look on it on the internet.
What happens if i dont pay?
You have 3 days to fullfil the payment if you do not pay untill this time you will never be able to recover you files again, additionaly all your personal information and files will be sold on the dark web.
Price negotiation contact: [email protected]
Bitcoin adress: 17CqMQFeuB3NTzJ2X28tfRmWaPyPQgvoHV

In the picture below, you can see what a folder with files encrypted by the Fun looks like. Each filename has the “.funny” extension added to it.

Fun Virus - encrypted .funny files

An example of encrypted .funny files.

How did Fun ransomware end up on my PC?

There is a huge number of possible ways of ransomware infiltration.

Nowadays, there are three most popular methods for hackers to have ransomware planted in your digital environment. These are email spam, Trojan infiltration and peer-to-peer file transfer.

  • If you open your mailbox and see letters that look just like notifications from utility services companies, delivery agencies like FedEx, web-access providers, and whatnot, but whose addresser is unknown to you, be wary of opening those emails. They are most likely to have a malicious item enclosed in them. So it is even more dangerous to open any attachments that come with letters like these.
  • Another thing the hackers might try is a Trojan horse model. A Trojan is an object that infiltrates into your machine pretending to be something else. For instance, you download an installer of some program you need or an update for some service. However, what is unboxed turns out to be a harmful agent that corrupts your data. Since the update wizard can have any title and any icon, you’d better be sure that you can trust the resource of the things you’re downloading. The best way is to use the software companies’ official websites.
  • As for the peer-to-peer file transfer protocols like BitTorrent or eMule, the danger is that they are even more trust-based than the rest of the Internet. You can never guess what you download until you get it. So you’d better be using trustworthy websites. Also, it is a good idea to scan the folder containing the downloaded files with the anti-malware utility as soon as the downloading is done.

How to remove ransomware?

It is important to note that besides encrypting your data, the Fun virus will most likely install Vidar Stealer on your machine to seize your credentials to various accounts (including cryptocurrency wallets). The mentioned program can derive your logins and passwords from your browser’s auto-filling data.

Remove Fun with Gridinsoft Anti-Malware

We have also been using this software on our systems ever since, and it has always been successful in detecting viruses. It has blocked the most common Ransomware as shown from our tests with the software, and we assure you that it can remove Fun as well as other malware hiding on your computer.

Gridinsoft Anti-Malware - Main Screen

To use Gridinsoft for remove malicious threats, follow the steps below:

1. Begin by downloading Gridinsoft Anti-Malware, accessible via the blue button below or directly from the official website gridinsoft.com.

2.Once the Gridinsoft setup file (setup-gridinsoft-fix.exe) is downloaded, execute it by clicking on the file.

setup-gridinsoft-fix.exe

3.Follow the installation setup wizard's instructions diligently.

Gridinsoft Setup Wizard

4. Access the "Scan Tab" on the application's start screen and launch a comprehensive "Full Scan" to examine your entire computer. This inclusive scan encompasses the memory, startup items, the registry, services, drivers, and all files, ensuring that it detects malware hidden in all possible locations.

Scan for Fun Ransomware

Be patient, as the scan duration depends on the number of files and your computer's hardware capabilities. Use this time to relax or attend to other tasks.

5. Upon completion, Anti-Malware will present a detailed report containing all the detected malicious items and threats on your PC.

The Fun was Found

6. Select all the identified items from the report and confidently click the "Clean Now" button. This action will safely remove the malicious files from your computer, transferring them to the secure quarantine zone of the anti-malware program to prevent any further harmful actions.

The Fun has been removed

8. If prompted, restart your computer to finalize the full system scan procedure. This step is crucial to ensure thorough removal of any remaining threats. After the restart, Gridinsoft Anti-Malware will open and display a message confirming the completion of the scan.

Remember Gridinsoft offers a 6-day free trial. This means you can take advantage of the trial period at no cost to experience the full benefits of the software and prevent any future malware infections on your system. Embrace this opportunity to fortify your computer's security without any financial commitment.

Trojan Killer for “Fun” removal on locked PC

In situations where it becomes impossible to download antivirus applications directly onto the infected computer due to malware blocking access to websites, an alternative solution is to utilize the Trojan Killer application.

Trojan Killer - Main View

There is a really little number of security tools that are able to be set up on the USB drives, and antiviruses that can do so in most cases require to obtain quite an expensive license. For this instance, I can recommend you to use another solution of GridinSoft - Trojan Killer Portable. It has a 14-days cost-free trial mode that offers the entire features of the paid version. This term will definitely be 100% enough to wipe malware out.

Trojan Killer is a valuable tool in your cybersecurity arsenal, helping you to effectively remove malware from infected computers. Now, we will walk you through the process of using Trojan Killer from a USB flash drive to scan and remove malware on an infected PC. Remember, always obtain permission to scan and remove malware from a computer that you do not own.

Step 1: Download & Install Trojan Killer on a Clean Computer:

1. Go to the official GridinSoft website (gridinsoft.com) and download Trojan Killer to a computer that is not infected.

Download Trojan Killer

2. Insert a USB flash drive into this computer.

3. Install Trojan Killer to the "removable drive" following the on-screen instructions.

Install Trojan Killer to Removable Drive

4. Once the installation is complete, launch Trojan Killer.

Step 2: Update Signature Databases:

5. After launching Trojan Killer, ensure that your computer is connected to the Internet.

6. Click "Update" icon to download the latest signature databases, which will ensure the tool can detect the most recent threats.

Click Update Button

Step 3: Scan the Infected PC:

7. Safely eject the USB flash drive from the clean computer.

8. Boot the infected computer to the Safe Mode.

9. Insert the USB flash drive.

10. Run tk.exe

11. Once the program is open, click on "Full Scan" to begin the malware scanning process.

Searching Fun Virus

Step 4: Remove Found Threats:

12. After the scan is complete, Trojan Killer will display a list of detected threats.

Searching Fun Finished

13. Click on "Cure PC!" to remove the identified malware from the infected PC.

14. Follow any additional on-screen prompts to complete the removal process.

Restart needed

Step 5: Restart Your Computer:

15. Once the threats are removed, click on "Restart PC" to reboot your computer.

16. Remove the USB flash drive from the infected computer.

Congratulations on effectively removing Fun and the concealed threats from your computer! You can now have peace of mind, knowing that they won't resurface again. Thanks to Gridinsoft's capabilities and commitment to cybersecurity, your system is now protected.

Often tamperers would unblock few of your files so you know that they really have the decryption program. As Fun virus is a relatively recent ransomware, anti-malware designers have not yet found a method to undo its work. However, the decryption instruments are frequently updated, so the solution may soon be available.

Of course, if the evildoers succeed in encrypting victim’s essential files, the hopeless person will probably fulfill their demands. However, paying a ransom does not necessarily mean that you’re getting your files back. It is still dangerous. After getting the money, the racketeers may deliver a wrong decryption code to the injured party. There were reports about criminals just vanishing after getting the ransom without even writing back.

The best countermeasure to ransomware is to have a system restore point or the copies of your essential files in the cloud drive or at least on an external storage. Surely, that might be insufficient. Your most crucial thing could be that file you were working upon when it all started. But at least it is something. It is also wise to scan your PC for viruses with the antivirus program after the system restoration.

Fun is not the only ransomware of its kind, since there are other specimens of ransomware out there that act in the same manner. Examples of those are Grafgrafel, Nbwr, Nbzi, and some others. The two basic differences between them and the Fun are the ransom amount and the encoding method. The rest is the same: documents become blocked, their extensions altered, ransom notes emerge in every directory containing encoded files.

Some lucky victims were able to decrypt the blocked files with the help of the free software provided by anti-ransomware specialists. Sometimes the racketeers mistakenly send the decryption code to the victims in the ransom note. Such an extraordinary fail allows the injured part to restore the files. But naturally, one should never expect such a chance. Remember, ransomware is a bandits’ technology to pull the money out of their victims.

How do I avert ransomware infiltration?

Fun ransomware doesnโ€™t have a superpower, neither does any similar malware.

You can protect your system from its infiltration in several easy steps:

  • Never open any letters from unknown senders with strange addresses, or with content that has nothing to do with something you are expecting (how can you win in a money prize draw without even taking part in it?). In case the email subject is more or less something you are waiting for, scrutinize all elements of the dubious letter carefully. A fake letter will surely have mistakes.
  • Avoid using cracked or unknown software. Trojans are often spreaded as a part of cracked software, possibly as a โ€œpatchโ€ to prevent the license check. Understandably, untrusted programs are very hard to distinguish from reliable software, as trojans may also have the functionality you need. Try searching for information about this software product on the anti-malware message boards, but the optimal way is not to use such software.
  • And finally, to be sure about the safety of the objects you downloaded, check them with GridinSoft Anti-Malware. This program will be a perfect shield for your PC.

Frequently Asked Questions

๐Ÿค” How can I open “.funny” files?Is it possible to openโ€œ.funnyโ€ files?

Negative. That is why ransomware is so frustrating. Until you decode the “.funny” files you will not be able to access them.

๐Ÿค” The encrypted files are very important to me. How can I decrypt them quickly?

If the โ€œ.funnyโ€ files contain some really important information, then you probably have them backed up. If not, there is still a function of System Restore but it needs a Restore Point to be previously saved. All other solutions require time.

๐Ÿค” Will GridinSoft Anti-Malware remove all the encrypted files alongside the Fun virus?

No way! The encrypted files are not harmful, so they won’t be deleted.

With the help of GridinSoft Anti-Malware, you can clean your PC off the actual viruses. The ransomware that has infected your system is probably still active and running scans every so often to encrypt any new files you might create on your PC after the initial attack. As it has already been said, the Fun ransomware comes with the company. It installs backdoors and keyloggers that can take your account passwords by trespass and provide hackers with easy access to your PC in the future.

๐Ÿค” What should I do if the Fun virus has blocked my computer and I can’t get the activation key.

In such a case, you need to have a flash memory drive with a previously installed Trojan Killer. Use Safe Mode to do the cleaning. The point is that the ransomware starts automatically as the system boots and encrypts any new files created or brought into your machine. To suppress this process – use Safe Mode, which allows only the vital programs to run automatically. Consider reading our manual on running Windows in Safe Mode.

๐Ÿค” And what should I do now?

Many of the encoded files might still be within your reach

  • If you exchanged your important files via email, you could still download them from your online mailbox.
  • You may have shared images or videos with your friends or family members. Just ask them to send those pictures back to you.
  • If you have initially got any of your files from the Web, you can try to do it again.
  • Your messengers, social networks pages, and cloud storage might have all those files as well.
  • Maybe you still have the needed files on your old PC, a notebook, phone, flash memory, etc.

HINT: You can employ file recovery programs1 to retrieve your lost information since ransomware encrypts the copies of your files, removing the original ones. In the video below, you can see how to recover your files with PhotoRec, but be advised: you can do it only after you remove the ransomware itself with an anti-malware program.

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Brendan Smith
How to Remove FUN Ransomware & Recover PC

Name: FUN Virus

Description: FUN Virus is a ransomware-type infections. This virus encrypts important personal files (video, photos, documents). The encrypted files can be tracked by a specific .funny extension. So, you can't use them at all.

Operating System: Windows

Application Category: Virus

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References

  1. Here are Best Data Recovery Software Of 2023.

About the author

Brendan Smith

I'm Brendan Smith, a passionate journalist, researcher, and web content developer. With a keen interest in computer technology and security, I specialize in delivering high-quality content that educates and empowers readers in navigating the digital landscape.

With a focus on computer technology and security, I am committed to sharing my knowledge and insights to help individuals and organizations protect themselves in the digital age. My expertise in cybersecurity principles, data privacy, and best practices allows me to provide practical tips and advice that readers can implement to enhance their online security.

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