Written by Brendan Smith
Remk is a DJVU family of ransomware-type infections1. The infection encrypts important personal files (video, photos, documents). The infected files can be tracked by specific “.remk” extension. So, you can’t open them at all.
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When we talk about the intrusion of unfamiliar programs into your computer’s work, the proverb “Forewarned is forearmed” describes the situation as accurately as possible. Gridinsoft Anti-Malware is exactly the tool that is always useful to have in your armory: fast, efficient, up-to-date. It is appropriate to use it as an emergency help at the slightest suspicion of infection.
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In this guide I will try to help you remove Remk virus for free. Also I will assist you in decoding your crypted files.

What is “Remk”?

Remk can be correctly identify as a ransomware-type infection.
Ransomware is a kind of virus that crypted your documents and then forces you to pay for them. DJVU (aka STOP) ransomware family was first revealed and analyzed by virus analyst Michael Gillespie2.

Remk is similar to other the same family: Foop, Lokd, Rezm. It crypted all common file types. Hence, users cannot work with the your documents or photos. Remk adds its particular “.remk” extension into all files. For example, the file “video.avi”, will be amended into “video.avi.remk”. As soon as the encryption is accomplished, Remk creates a specific text file “_readme.txt” and puts it into all folders that contain the modified files.

The feature of all ransomwares is that their performance is not instantaneous. No one can surely say how long encryption takes, and do this term specified in the command that launches ransomware, but one is clear – you can notice encrypted files with .something extension even before readme.txt file appearing.

Here is a details for the Remk virus:
Ransomware family3 DJVU/STOP4 ransomware
Extension .remk
Ransomware note _readme.txt
Ransom From $490 to $980 (in Bitcoins)
Contact [email protected], [email protected]
Detection5 Win32/Kryptik.HBWS, AIT:Trojan.Nymeria.1884, Ransom:Win32/CryptInject!MSR
Symptoms Most of your files (photos, videos, documents) have a .remk extension and you can’t open it
Fix Tool See If Your System Has Been Affected by .remk file virus

This text asking payment is for get files back via decryption key:

Remk virus message

The scary alert demanding from users to pay the ransom to decrypt the compromised data contains these frustrating warnings

The cryptography algorithm used by Remk is AES-256. So, if your documents got encrypted with a specific decryption key, which is totally and there are no other copies. The sad reality is that it is impossible to recover the information without the unique key available.

In case if Remk worked in online mode, it is impossible for you to gain access to the AES-256 key. It is stored on a remote server owned by the frauds who distibute the Remk virus.

For receiving decryption key the payment should be $980. To obtain the payment details the victims are encouraged by the message to contact the frauds by email ([email protected]), or via Telegram.

Do not pay for Remk!

Please, try to use the available backups, or Decrypter tool

_readme.txt file also indicates that the computer owners must get in touch with the Remk representatives during 72 hours starting from the moment of files where crypted. On the condition of getting in touch within 72 hours users will be granted a 50% rebate, thus the ransom amount will be minimized down to $490). However, stay away from paying the ransom!

UPD 17.03.2020. .remk fraudsters increased max sum you need to pay (if you haven’t paid in 72 hrs) to 1200$, but in 72 hours user can pay them same 490$. That ocassion shows that ransomware distributors have a lot of payments done in 72 hours, so they can force users to choose : pay more or pay faster. But they still won’t give you any decryption key.

It is also quite bad idea to contact with fraudsters. They’d likely try to force you to pay, using social engineering methods or even to threat you with file deleting or  so. Also, knaves may add your e-mail to their database, and then sold it to another fraudsters. So, the best way for you is to read this article and get known how to remove this ransomware.

UPD 21.03.2020. .remk developers, likely repeating after .nppp snides started a massive e-mail spam. A lot of users from France, Italy, Spain and Germany complained about letters from “dead” e-mail adresses offering them to install an add-on for their browser, which would allow them to check coronavirus stats in their city and all aroung the world. After installing, this add-on really giving you access to stats, but you will also get “sleeping” .remk ransomware, which would encrypt your files one day.

I certainly advise that you do not contact these frauds and do not pay. The one of the most real working solution to recover the lost data – just using the available backups, or use Decrypter tool.

The peculiarity of all such viruses apply a similar set of actions for generating the unique decryption key to recover the ciphered data.

Thus, unless the ransomware is still under the stage of development or possesses with some hard-to-track flaws, manually recovering the ciphered data is a thing you can’t really perform. The only solution to prevent the loss of your valuable data is to regularly make backups of your crucial files.

Note that even if you do maintain such backups regularly, they ought to be put into a specific location without loitering, not being connected to your main workstation.

For instance, the backup may be kept on the USB flash drive or some alternative external hard drive storage. Optionally, you may refer to the help of online (cloud) information storage.

Needless to mention, when you maintain your backup data on your common device, it may be similarly ciphered as well as other data.

For this reason, locating the backup on your main PC is surely not a wise idea.

How I was infected?

Remk has a various methods to built into your system. But it doesn’t really matter what way had place in your case.

Remk infection attack

Remk attack following a successful phishing attempt.

Nevertheless, these are the common leaks through which it may be injected into your PC:

  • hidden installation along with other apps, especially the utilities that work as freeware or shareware;
  • dubious link in spam emails leading to the Remk installer
  • online free hosting resources;
  • using illegal peer-to-peer (P2P) resources for downloading pirated software.

There were cases when the Remk virus was disguised as some legitimate tool, for example, in the messages demanding to initiate some unwanted software or browser updates. This is typically the way how some online frauds aim to force you into installing the Remk ransomware manually, by actually making you directly participate in this process.

It’s important to notice that ransomwares often getting to your computer in “sleep mode”. User won’t be able to detect it manually and even using anti-malware software, especially non-updated. Such “incubation period” can last for a long time, until ransomware distributors won’t send a correspondind command via command server. Another important note is that ransomwares are usually distributed in pack with another malware, such as adware, PUPs like “free and fast browsers” or “free and effective antivirus”, etc.

UPD. 24.03.2020. The statistics that been collected in March showing that a lot of Remk ransomware causes was been observed after SAntivirus appearance. There was no detailed statistics about how did users got SAntivirus on their PC. But one is clear – SAntivirus is not just PUP but also a ransomware carrier.

Surely, the bogus update alert will not indicate that you are going to actually inject the Remk ransomware. This installation will be concealed under some alert mentioning that allegedly you should update Adobe Flash Player or some other dubious program whatsoever.

Of course, the cracked apps represent the damage too. Using P2P is both illegal and may result in the injection of serious malware, including the Remk ransomware.

To sum up, what can you do to avoid the injection of the Remk ransomware into your device? Even though there is no 100% guarantee to prevent your PC from getting damaged, there are certain tips I want to give you to prevent the Remk penetration. You must be cautious while installing free software today.

It also will be a good idea to launch a full scan every time you are getting malware of some sort. As mentioned, ransomware is usually distributed in bundle with another malware, so, if you hurry up – you can avoid encrypting. But make sure that antimalware you are going to use is able to detect ransomware.

Make sure you always read what the installers offer in addition to the main free program. Stay away from opening dubious email attachments. Do not open files from the unknown addressees. Of course, your current security program must be always updated.

The malware does not speak openly about itself. It will not be mentioned in the list of your available programs. However, it will be masked under some malicious process running regularly in the background, starting from the moment when you launch your PC.

The message by the Remk ransomware states the following frustrating information:


Don't worry, you can return all your files!

All your files like photos, databases, documents and other important are encrypted with strongest encryption and unique key.
The only method of recovering files is to purchase decrypt tool and unique key for you.
This software will decrypt all your encrypted files.

What guarantees you have?

You can send one of your encrypted file from your PC and we decrypt it for free.
But we can decrypt only 1 file for free. File must not contain valuable information.

You can get and look video overview decrypt tool:

Price of private key and decrypt software is $980.
Discount 50% available if you contact us first 72 hours, that's price for you is $490.

Please note that you'll never restore your data without payment.

Check your e-mail "Spam" or "Junk" folder if you don't get answer more than 6 hours.

To get this software you need write on our e-mail:

[email protected]

Reserve e-mail address to contact us:

Your personal ID:

The image below gives a clear vision of how the files with “.remk” extension look like:

Remk Virus - crypted .remk files

Example of crypted .remk files

How to remove Remk virus?

In addition to encode a victim’s files, the Remk virus has also started to install the Azorult Spyware on computer to steal account credentials, cryptocurrency wallets, desktop files, and more.
Reasons why I would recommend GridinSoft6

The is an excellent way to deal with recognizing and removing threats – using Gridinsoft Anti-Malware. This program will scan your PC, find and neutralize all suspicious processes7.

Download Removal Tool.

You can download GridinSoft Anti-Malware by clicking the button below:

Run the setup file.

When setup file has finished downloading, double-click on the setup-antimalware-fix.exe file to install GridinSoft Anti-Malware on your system.

Run Setup.exe

An User Account Control asking you about to allow GridinSoft Anti-Malware to make changes to your device. So, you should click “Yes” to continue with the installation.

GridinSoft Anti-Malware Setup

Press “Install” button.

GridinSoft Anti-Malware Install

After pressure, GridinSoft Anti-Malware will start core pack downloading. It’s size is about 130 MB, so having at least 50 mbps Internet download speed your PC will deal with it in a couple of minutes. The installation process lasts ~5 minutes, then user will see a main screen with usuall buttons.

Once installed, Anti-Malware will automatically run.

GridinSoft Anti-Malware Splash-Screen

Wait for the Anti-Malware scan to complete.

GridinSoft Anti-Malware will automatically start scanning your system for Remk infections and other malicious programs. This process can take a 20-30 minutes, so I suggest you periodically check on the status of the scan process.

GridinSoft Anti-Malware Scanning

Click on “Clean Now”.

When the scan has finished, you will see the list of infections that GridinSoft Anti-Malware has detected. To remove them click on the “Clean Now” button in right corner.

GridinSoft Anti-Malware Scan Result

How to decrypt .remk files?

Restore solution for big “.remk files

Try removing .remk extension on a few BIG files and opening them. Either the Remk ransomware read and did not encrypt the file, or it bugged and did not add the filemarker. If your files are very large (2GB+), the latter is most likely. Please, let me know in comments if that will work for you.

The newest extensions released around the end of August 2019 after the criminals made changes. This includes Foop, Lokd, Rezm, etc.

As a result of the changes made by the criminals, STOPDecrypter is no longer supported. Tt has been removed and replaced with the Emsisoft Decryptor for STOP Djvu Ransomware developed by Emsisoft and Michael Gillespie.

You can download free decryption tool here: Decryptor for STOP Djvu.

Download and run decryption tool.

Start downloading the decryption tool.

Make sure to launch the decryption utility as an administrator. You need to agree with the license terms that will come up. For this purpose, click on the “Yes” button:

Emsisoft Decryptor - license terms

As soon as you accept the license terms, the main decryptor user interface comes up:

Emsisoft Decryptor - user interface

Select folders for decryption.

Based on the default settings, the decryptor will automatically populate the available locations in order to decrypt the currently available drives (the connected ones), including the network drives. Extra (optional) locations can be selected with the help of the “Add” button.

Decryptors normally suggest several options considering the specific malware family. The currently possible options are presented in the Options tab and can be activated or deactivated there. You may locate a detailed list of the currently active Options below.

Click on the “Decrypt” button.

As soon as yo add all the desired locations for decryption into the list, click on the “Decrypt” button in order to initiate the decryption procedure.

Note that the main screen may turn you to a status view, letting you know of the active process and the decryption statistics of your data:

Emsisoft Decryptor - the decryption statistics

The decryptor will notify you as soon as the decryption procedure is completed. If you need the report for your personal papers, you can save it by choosing the “Save log” button. Note that it is also possible to copy it directly to your clipboard and to paste it into emails or forum messages if you need to do so.

Frequently Asked Questions

How can I open “.remk” files?

No way. These files are encrypted by Remk ransomware. The contents of .remk files are not available until they are decrypted.

remk files contain important information. How can I decrypt them urgently?

If your data remained in the .remk files are very valuable, then most likely you made a backup copy.
If not, then you can try to restore them through the system function – Restore Point.
All other methods will require patience.

You have advised using GridinSoft Anti-Malware to remove Remk. Does this mean that the program will delete my encrypted files?

Of course not. Your encrypted files do not pose a threat to the computer. What happened has already happened.

You need GridinSoft Anti-Malware to remove active system infections. The virus that encrypted your files is most likely still active and periodically,
runs a test for the ability to encrypt even more files. In addition, these viruses install keyloggers and backdoors for further malicious actions
(example theft of passwords, credit cards) often.

Decrytor did not decrypt all my files, or not all of them were decrypted. What should I do?

Have patience. Apparently you are infected with the new version of Remk ransomware, and decryption keys have not yet been released. Follow the news on our website.
We will keep you posted on when new Remk keys, or new decryption programs appear.

What can I do right now?

If your computer is infected with ransomware, I recommend that you contact the following government fraud and scam sites to report this attack:

Video Guide

It’s my favorite video tutorial: How to use GridinSoft Anti-Malware and Emsisoft Decryptor for fix ransomware infections.

If the guide doesn’t help you to remove Remk infection, please download the GridinSoft Anti-Malware that I recommended. Also, you can always ask me in the comments for getting help. Good luck!

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  1. Ransomware-type infection:
  2. Twitter:
  3. My files are encrypted by ransomware, what should I do now?
  4. About DJVU (STOP) Ransomware.
  5. Encyclopedia of threats.
  6. GridinSoft Anti-Malware Review from HowToFix site:
  7. More information about GridinSoft products:

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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