Avdn Virus


Avdn is a ransomware infection that prevents users from opening or using their digital files and asks them for a ransom. To complete its agenda, Avdn applies encryption to selected files and leaves a ransom notification on the computer’s screen.

Avdn Virus

The Avdn virus will encrypt your files leaving a -readme.html file behind.

This Avdn virus encrypts user data using AES-256 + RSA-2048, and then requires a ransom of $ 150 to $ 350 or more in BTC to return the files. Avaddon Ransomware is written in C ++ using WinAPI. Designed for Windows 7-10.Ransomware cryptoviruses like this one are very popular tools for extortion that cybercriminals use to raise quick money from their victims through blackmail. Such infections are also particularly effective in remaining hidden in the system while applying their sophisticated encryption to the victim’s data because most security programs typically do not identify them. What’s more, threats like Avdn usually don’t show obvious signs of their actions and even users cannot rely on specific symptoms to detect them.

Most ransomware-based cryptoviruses like Zwer or Nlah are exclusively developed to detect and lock digital data using a sophisticated encryption code that cannot be deciphered without a decryption key. These infections require money to provide the victims with such a key that can potentially undo the applied file-encryption. The hackers who stay behind such malicious programs normally put a .txt file on the computer’s screen after the attack and provide instructions on how to transfer the money to their cryptocurrency account. In the same file, they typically promise to immediately send a decryption key to those who transfer the required amount.

However, it is not the best idea to trust the promises of the same people who have hacked your computer and have encrypted your data. After all, your money is the only thing the crooks are after, and when you send it to them, they are most likely to disappear without sending you any file-recovery solution rather than dealing with you and helping you get back your files.

The Avdn virus

The Avdn virus is a malicious ransomware-based infection which secretly infiltrates computers and applies a complex encryption algorithm to some of the digital files stored there. The main purpose of the Avdn virus is to seek a ransom from the owners for a file-decrypting key.

Avdn Virus

All your files has been encrypted Instruction (random numbers)-readme.html

The most impacted users of the ransomware’s attack are those who keep very sensitive data on their computers. They may not be able to access the encrypted information in any way and, what is worse, they may never get it back, regardless of how carefully they fulfill the ransom demands of the hackers. Sadly, even if the cryptovirus is removed from the system, some of the files may still remain inaccessible for good. Nonetheless, those people who maintain copies of their files on external hard drives, cloud storage or other devices can safely recover from the attack of a threat like Avdn without much hassle. They just have to remove the ransomware cryptovirus from the computer and then safely connect the backup sources and transfer their files. When a file-backup source is not available, however, and the encrypted files are of great importance, it is best for the victims to explore all the alternative solutions in order to cope with the ransomware in the best possible way. Luckily, there are some options that may not involve paying ransom to anonymous hackers and we have listed them in a special section of the removal guide which you can find below.

The Avdn file decryption

The Avdn file decryption is a file-recovery process that is supposed to return the information encrypted by the ransomware to its previous state. The Avdn file decryption process needs a special encryption key to get activated, which key can only be obtained after you pay a ransom for it.

Our suggestion, however, is to firstly explore our removal guide and the methods mentioned there and not to rush with a money transfer to some anonymous hackers.


Name Avdn
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

Remove Avdn Ransomware

Avdn 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).

Avdn Virus


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

Avdn Virus

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

Avdn Virus
Drag and Drop Files Here to Scan
Maximum file size: 128MB.

This scanner is free and will always remain free for our website's users. You can find its full-page version at: https://howtoremove.guide/online-virus-scanner/

Scan Results

Virus Scanner Result
Avdn VirusClamAV
Avdn VirusAVG AV
Avdn VirusMaldet

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.

Avdn 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:

Avdn 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:

Avdn 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.

Avdn 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!

Avdn Virus

How to Decrypt Avdn 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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