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AVYU VIRUS Ransomware [.avyu Files] Remove & Decrypt Fix [Free]

What Is Avyu Virus?

avyu virusAvyu virus is the name of a ransomware infection, whose primary purpose is to get in your computer and begin encrypting your files so that it can extort you later into paying a ransom in Bitcoin to get them back. This particular infection belongs to a large ransomware family of threats, also known as the Djvu viruses. It uses the _readme.txt ransom note and the .avyu file extension which it adds after each encrypted file name.

Read this article to learn more about how this virus spreads, what does it do on your computer and how you can get rid of it safely and try to get your files to work again.

Avyu Virus Summary

Name Avyu virus, also known as UDS:Trojan.Win32.Chapak.gen, Ransom:Win32/StopCrypt.KM!MTB, Win32:PWSX-gen [Trj], Win32:PWSX-gen [Trj], A Variant Of Win32/GenKryptik.FHJB – more detections of this virus on VirusTotal
File Extension .avyu
Type Ransomware, Cryptovirus
Short Description The ransomware encrypts files on your computer system and demands a ransom to be paid to allegedly recover them.
Symptoms The Avyu Virus ransomware will encrypt your files by appending the .avyu extension to them.
Ransom Demanding Note _readme.txt
Distribution Method Spam Emails, Email Attachments
Detection Tool See If Your System Has Been Affected by malware

Download

Malware Removal Tool

Avyu Virus – How Did I Get Infected?

Avyu virus is similar to other such infections, like .bbbw, .bbbe and .bbbr ones.

It enters your computer in a couple of ways, and one of them is if the virus is sent to you via email, pretending to be a document that is important, for example:

  • Work-related files.
  • “Password changed” types of e-mails.
  • Receipts.
  • Invoices.
  • Flight tickets.
  • Train tickets.
  • Documents for an upcoming event.

Be advised, that most of these documents contain malicious script, that when opened may trigger the following infection process:

Another way this infection can end up on your device is if it is download it from some shady website, where it pretends to be a legitimate executable that you may have been looking to download for free:

  • Keygens for programs or games.
  • Patches.
  • SFX or other archives carrying game mods or similar files.
  • Fake installers.
  • Portable versions of programs that are cracked.
  • Software crackfixes.

Avyu Virus – What Does It Do?

Once added on your device, the Avyu virus may connect to a remote host from where it may situate its payload files directly on your drive, more specifically in the following Windows directories under different names:

  • %Windows%
  • %SystemDrive%
  • %LocalLow%
  • %AppData%
  • %Local%
  • %Temp%
  • %System%
  • %system32%

The virus may also use the _readme.txt note, to notify the victim of the situation and what they must do to get their files to work again:

STOP ransomware virus ransom message

Among the activities of this ransomware infection, is attacking some of the Registry keys of Windows, like the following:

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

What Are .avyu Files

The .avyu files are the encrypted copies of your original data. These files are encoded, which means part of their data is altered using the AES encryption algorithm. This produces a unique decryption key that is used to get the fans back to their normal working state. The virus scans for the following types of files, based on their file extensions to encrypt them:

  • Audio file formats (.mp3, .wav, etc.).
  • Pictures (.jpg, .png, .etc).
  • Video file kinds (.mp4, .avi, etc.).
  • Archive file types (.zip, .rar, etc).
  • Documents of all sorts (.docx, .pptx, etc.).
  • Other files.

After the encryption is complete, the malware creates copies of the original files and adds the file extension it uses, making the files appear like the following examples shows:

Picture.jpg.avyu

How to Remove Avyu Virus?

If you want to remove the .avyu virus immediately from your computer, then we suggest that you use the information in this article in combination with the removal guide beneath it. It has been created with the primary purpose to provide you with the necessary assistance to delete this virus either manually or automatically. For the most effective removal, security experts would recommend that you download and run a scan of your computer system, using anti-malware software. Such a security to created to perform an effective scan on your device and get it rid of the virus thoroughly, while ensuring future protection.

How to Decrypt .avyu Files?

Avyu virus files can be decrypted in case you have online key. What is achievable by following the instructions in our STOP Ransomware File Decryption Guide. Another way to try is to watch the video guide below, in case you prefer this way of decryption.

Video guide for using the STOP Ransomware Decryptor:

Ventsislav Krastev

Ventsislav is a cybersecurity expert at SensorsTechForum since 2015. He has been researching, covering, helping victims with the latest malware infections plus testing and reviewing software and the newest tech developments. Having graduated Marketing as well, Ventsislav also has passion for learning new shifts and innovations in cybersecurity that become game changers. After studying Value Chain Management, Network Administration and Computer Administration of System Applications, he found his true calling within the cybersecrurity industry and is a strong believer in the education of every user towards online safety and security.

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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

About the Avyu virus Research

The content we publish on SensorsTechForum.com, this Avyu virus how-to removal guide included, is the outcome of extensive research, hard work and our team’s devotion to help you remove the specific malware and restore your encrypted files.

How did we conduct the research on this ransomware?

Our research is based on an independent investigation. We are in contact with independent security researchers, and as such, we receive daily updates on the latest malware and ransomware definitions.

Furthermore, the research behind the Avyu virus ransomware threat is backed with VirusTotal and the NoMoreRansom project.

To better understand the ransomware threat, please refer to the following articles which provide knowledgeable details.

References

1. How to Recognize Spam Emails with Ransomware
2. How Does Ransomware Encryption Work?
3. How to Decrypt Ransomware Files
4. Ransomware Getting Greedier and Bigger, Attacks Increase by 40%
5. 1 in 5 Americans Victim of Ransomware



Windows Mac OS X

How to Remove Avyu virus from Windows.


Step 1: Boot Your PC In Safe Mode to isolate and remove Avyu 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 Avyu 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 Avyu 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 Avyu 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 Avyu 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.

Video Guide for Automatic and Fast Removal

Step 5 (Optional): Try to Restore Files Encrypted by Avyu virus.

Ransomware infections and Avyu 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 recommended Data Recovery software by clicking on the link underneath:

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

Step 6: How to Restore Files Encrypted by Ransomware (Video Guide)


Windows Mac OS X

Get rid of Avyu virus from Mac OS X.


Step 1: Uninstall Avyu 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 Avyu 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 Avyu 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 Avyu 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 Avyu 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 Avyu 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 Avyu virus:


Download

SpyHunter for Mac



Step 3 (Optional): Try to Restore Files Encrypted by Avyu virus.

Ransomware infections and Avyu 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 recommended 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.


Avyu virus FAQ

What is Avyu virus ransomware and how does it work?

Avyu 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 Avyu virus ransomware infect my computer?

Via several ways.Avyu 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 Avyu 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 .Avyu virus files?

You can't. At this point the .Avyu 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 .Avyu virus files successfully, then do not despair, because this virus is still new.

One way to restore files, encrypted by Avyu 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 ".Avyu 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 .Avyu 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 Avyu 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 Avyu virus ransomware and then remove it without causing any additional harm to your important .Avyu virus files.

Also, keep in mind that viruses like Avyu 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.

How to Report Ransomware to Authorities?

In case your computer got infected with a ransomware infection, you can report it to the local Police departments. It can help authorities worldwide track and determine the perpetrators behind the virus that has infected your computer. Below, we have prepared a list with government websites, where you can file a report in case you are a victim of a cybercrime:

Cyber-security authorities, responsible for handling ransomware attack reports in different regions all over the world:

Reports may be responded to in different timeframes, depending on your local authorities.

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