Home > Ransomware > .kvllyatprotonmaildotch Files Virus – How to Remove and Restore Data

.kvllyatprotonmaildotch Files Virus – How to Remove and Restore Data

This article has been created with the main goal of helping you by showing you how you can remove the .kvllyatprotonmaildotch files virus from your computer and how to restore files encrypted by it.

Yet another ransomware virus has been detected by cybersec experts. The ransomware is likely by someone with the nickname KVLLY, since he or she uses this in the ransom note. The virus aims to encrypt the files on the computers that have been infected by it and then adds the .kvllyatprotonmaildotch file extension to the files themselves. The ransomware then may then drop a ransom note file, called READ_TO_DECRYPT.html. In the ransom note, there are instructions to send 0.02 BTC to the wallet of the cyber-criminal. If your computer has been affected by the .kvllyatprotonmaildotch files virus, you should read the following article to understand more about it and how you can remove it from your PC.

Threat Summary

Name .kvllyatprotonmaildotch
Type Ransomware, Cryptovirus
Short Description Aims to encrypt the files on the computers compromised by it and then ask for a ransom to be paid in 0.02 BTC.
Symptoms Files are no longer able to be opened and have the .kvllyatprotonmaildotch file extension added to them. A ransom note file, called READ_TO_DECRYPT.html.
Distribution Method Spam Emails, Email Attachments, Executable files
Detection Tool See If Your System Has Been Affected by malware


Malware Removal Tool

User Experience Join Our Forum to Discuss .kvllyatprotonmaildotch.
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.

.kvllyatprotonmaildotch File Ransomware – Distribution

The primary method by which the .kvllyatprotonmaildotch files virus may land on your computer is believed to be via a malicious infection file. This file could be a dropper, a Trojan.Downloader virus and it can even be a JavaScript which aims to download the payload while being obfuscated. Obfuscation plays a critical role in the infection process of .kvllyatprotonmaildotch and any other ransomware virus mainly because it’s main goal is to get users to download and run the file and when ran, the file must be able to evade any antivirus software.

This is why the crooks may mask the file as an e-mail attachment which seems to be of an important nature, like the example e-mail below shows:

The most often imitated types of files include invoices, banking documents, order receipts and cyber-criminals even use the names of big companies for the infection process, like PayPal, DHL, LinkedIn and others with the main goal of making the virus attachment seem more trustworthy.

Besides via e-mail, the crooks who are behind the .kvllyatprotonmaildotch file ransomware may also attack your computer by uploading the file online on suspicious websites. If uploaded, the files often pretend to be:

  • Game or program cracks.
  • Patches.
  • Setups.
  • Key generators.
  • Software license activators.
  • Portable versions of programs or games.

.kvllyatprotonmaildotch Files Virus – More Information and Activity

After the .kvllyatprotonmaildotch ransomware virus has already infected your computer, the payload files may be dropped in the following Windows directories:

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

After the payload of this virus has been dropped. The ransomware may start to modify key elements of the operating system, including to create mutexes, execute functions and system calls as an administrator and obtain privileges as such. Once acting as the administrator on your computer, the .kvllyatprotonmaildotch file ransomware may then modify the Windows Registry Edtior, which is a typical action for most ransomware viruses. The .kvllyatprotonmaildotch ransomware may attack the Run and RunOnce registry sub-keys, that are responsible for auto-running programs on system login. The virus does this by adding system value strings with parameters that point to the actual location of the malicious file, responsible for your headaches. The Run and RunOnce keys are located in the following sub-keys:


Having done that, the .kvllyatprotonmaildotch files virus may also modify the Windows Shadow copies by executing the following commands in the Windows Command Prompt:

→ sc stop VVS
sc stop wscsvc
sc stop WinDefend
sc stop wuauserv
sc stop BITS
sc stop ERSvc
sc stop WerSvc
cmd.exe /C bcdedit /set {default} recoveryenabled No
cmd.exe /C bcdedit /set {default} bootstatuspolicy ignoreallfailures
C:\Windows\System32\cmd.exe” /C vssadmin.exe Delete Shadows /All /Quiet

Furthermore, among the files dropped by the ransomware is also it’s ransom note file, aimed at making sure the user knows what is going on. The ransom note file is named READ_TO_DECRYPT.html and it has the following extortion message:



AND AFTER PAY CONTACT kvlly@protonmail.ch

If you start seeing this note to be created on one or more folders of your computer, you should immediately shut down your computer, because seeing it, means that the virus has started the encryption process.

.kvllyatprotonmaildotch Virus – Encryption

When it comes to encrypting your files, the .kvllyatprotonmaildotch files virus does not just encode any file. The ransomware’s main goal is for you to pay the ransom after all, and this is why it white lists system folders, like %System32%, %Windows%, %ProgramData% and other directories that might obstruct you from using your computer as you normally would. But other than that, the .kvllyatprotonmaildotch virus scans for the most often used documents, images, archives, audio files and other files of importance and looks for them based on their files types. So far, the .kvllyatprotonmaildotch virus is believed to look for the following types of files:


The .kvllyatprotonmaildotch file ransomware is believed to use the Advanced Encryption Standard enciphering mode, which is also known as AES. It claims to use it in a AES-256 bit strenght which means that the encryption takes 256 bits to decode. The file eextension .kvllyatprotonmaildotch is added after encryption, which is basically the e-mail of the hacker. The files may begin to appear like the following:

Given that the AES-256 is one of the most sophisticated encryption modes, the only chance of decrypting the files directly is if the virus has a flaw and cyber-security researchers make a breakthrough. But do not despair, because not all is lost. Keep reading this article to see some alternative methods by which you could recover at least some of your data.

How to Remove .kvllyatprotonmaildotch Ransomware and Restore Your Files

If you want the .kvllyatprotonmaildotch files virus gone from your computer, then you are welcome to try the removal instructions down below. If manual removal does not work, be advised that security experts strongly recommend to download and run a scan of your PC, using an advanced anti-malware software. Such program is able to securely remove .kvllyatprotonmaildotch and all other threats from your computer, while ensuring that it remains protected against threats In the future.

If you want to recover files, encrypted by the .kvllyatprotonmaildotch ransomware, we have summed up several alternative methods which you can give a shot of down below. They may not be a 100% effective solution, but with their goal, you might be able to decode at least some of the files. Be advised, before trying these methods that you do it on your own risk and you should backup the encrypted files on another drive before trying to decode them yourself.

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.


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 .kvllyatprotonmaildotch Research

The content we publish on SensorsTechForum.com, this .kvllyatprotonmaildotch 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 .kvllyatprotonmaildotch 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.


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 .kvllyatprotonmaildotch from Windows.

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


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 .kvllyatprotonmaildotch 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 .kvllyatprotonmaildotch 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 .kvllyatprotonmaildotch 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.

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 .kvllyatprotonmaildotch 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.


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


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.


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 .kvllyatprotonmaildotch.

Ransomware infections and .kvllyatprotonmaildotch 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 .kvllyatprotonmaildotch from Mac OS X.

Step 1: Uninstall .kvllyatprotonmaildotch and remove related files and objects

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 .kvllyatprotonmaildotch:

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 .kvllyatprotonmaildotch. 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 .kvllyatprotonmaildotch. 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 .kvllyatprotonmaildotch 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 .kvllyatprotonmaildotch. 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

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

Click the button below below to download SpyHunter for Mac and scan for .kvllyatprotonmaildotch:


SpyHunter for Mac

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

Ransomware infections and .kvllyatprotonmaildotch 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.

.kvllyatprotonmaildotch FAQ

What is .kvllyatprotonmaildotch ransomware and how does it work?

.kvllyatprotonmaildotch 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 .kvllyatprotonmaildotch ransomware infect my computer?

Via several ways..kvllyatprotonmaildotch 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 .kvllyatprotonmaildotch 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 ..kvllyatprotonmaildotch files?

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

One way to restore files, encrypted by .kvllyatprotonmaildotch 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 "..kvllyatprotonmaildotch" files (Other Methods)?

Yes, sometimes files can be restored. We have suggested several file recovery methods that could work if you want to restore ..kvllyatprotonmaildotch 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 .kvllyatprotonmaildotch 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 .kvllyatprotonmaildotch ransomware and then remove it without causing any additional harm to your important ..kvllyatprotonmaildotch files.

Also, keep in mind that viruses like .kvllyatprotonmaildotch 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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