How to unintall MARRACRYPT ransomware?

Also Known As: MARRACRYPT virus
Distribution: Low
Damage level: Severe

MARRACRYPT ransomware removal instructions


MARRACRYPT is a new variant of HERMES ransomware, the person who discovered this variant is dnwls0719. MARRACRYPT renames encrypted files by adding an email address of cyber criminals who designed and appending the ".MARRA" extension to their filenames. For example, it renames a file named "1.jpg" to "1.jpg[].MARRA", and so on. Also, this ransomware creates the "MARRACRYPT_INFORMATION.HTML" file (a ransom note) which contains instructions on how to contact its developers and some other details.

As explained in the MARRACRYPT_INFORMATION.HTML ransom note, this ransomware encrypts files with the RSA-4096 algorithm encryption algorithm and the only way to decrypt files is to use a decryption software that can be purchased from its developers. MARRACRYPT's developers can be contacted via or email address. Victims have to send them an email with the "IDKEY" (personal ID) in it which can be copied from the ransom note. Also, MARRACRYPT's developers offer to decrypt two encrypted files for free. It is common that cyber criminals offer a free decryption as a proof that they have a tool that can decrypt encrypted files. However, it does not mean that they should be trusted (paid). Quite often victims who pay a ransom get scammed, cyber criminals do not send a decryption tool and/or key even after transaction. It is worthwhile to mention that files remain encrypted event after removal of ransomware. However, by uninstalling ransomware victims prevent if from causing further encryptions. Typically, the only way to recover files without having to use tools that can be provided only by cyber criminals is to restore them from a backup.

Screenshot of a message encouraging users to pay a ransom to decrypt their compromised data:


There are many various ransomware-type programs, some examples are Ouchachia, Jerry_glanville and DeathHiddenTear. Most of them are designed encrypt data and create (and/or display) a ransom note. Two main (and most common) differences usually are a cryptographic algorithm (symmetric or asymmetric) that ransomware uses to encrypt files and price of a decryption tool (and/or key). Unfortunately, it is possible to decrypt files without having to use tools that can be purchased from cyber criminals only in cases when ransomware is not fully developed, has some bugs/flaws. Usually the only way to recover files without their tools is to restore them from a backup, that is why it is important to have data backed up and store it on unplugged storage device and/or remote server like Cloud.

How did ransomware infect my computer?

Usually cyber criminals spread various malicious programs through Trojans, spam campaigns, fake software updaters, untrustworthy software download tools, sources and unofficial activation ('cracking') tools. Trojans are malicious programs that usually are designed to install other programs of this kind. In other words, it is common for Trojans to be designed to cause chain infections. Another way to spread malicious software is by sending emails that contain malicious attachments. Typically, cyber criminals send emails that contain malicious MS Office documents, JavaScript files, archive files like ZIP, RAR, PDF documents and executable files (like .exe). Their main goal is to trick recipients into opening a malicious file that, if opened, installs malware. Fake, unofficial software updaters cause damage by installing malicious programs instead of the updates, fixes, or by exploiting bugs, flaws of outdated software. Unofficial, freeware, free file hosting websites, third party downloaders, Peer-to-Peer networks (like torrent clients, eMule), and other similar channels are often used by cyber criminals as tools to host malicious files. Usually they disguise those files as regular, harmless files and wait for someone to download, and open them. By opening those files people infect their computers with malicious programs. Unofficial activation ('cracking') tools are illegal programs that supposed to bypass activation of licensed software. Nevertheless, quite often they are designed install malicious software instead of activating installed, legitimate software.

Threat Summary:
Threat Type Ransomware, Crypto Virus, Files locker
Encrypted Files Extension .MARRA
Cyber Criminal Contact,
Detection Names Avast (Win32:Trojan-gen), BitDefender (Trojan.GenericKD.33362147), ESET-NOD32 (A Variant Of MSIL/Filecoder.XS), Kaspersky (Trojan.MSIL.DOTHETUK.wds), Full List Of Detections (VirusTotal)
Symptoms Cannot open files stored on your computer, previously functional files now have a different extension (for example, my.docx.locked). A ransom demand message is displayed on your desktop. Cyber criminals demand payment of a ransom (usually in bitcoins) to unlock your files.
Distribution methods Infected email attachments (macros), torrent websites, malicious ads.
Damage All files are encrypted and cannot be opened without paying a ransom. Additional password-stealing trojans and malware infections can be installed together with a ransomware infection.

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How to protect yourself from ransomware infections?

Installed software must be updated and activated with implemented tools and/or functions that are designed by official software developers. It is not legal to activate licensed software with various unofficial tools, besides, these tools can be (and often are) used to distribute malicious software. Furthermore, it is not safe to open attachments (or web links) that are included in various irrelevant emails, especially if such emails were received from unknown, suspicious email addresses. Software should be downloaded only from official paged and via direct links. It is not safe to use unofficial pages, various third party downloaders and other and other channels that are mentioned in the previous paragraph as tools to download any software. One more way keep a computer safe is to regularly scan it for threats with a reputable anti-spyware or antivirus software. If your computer is already infected with MARRACRYPT, we recommend running a scan with Spyhunter for Windows to automatically eliminate this ransomware.

Text presented in MARRACRYPT ransomware's "MARRACRYPT_INFORMATION.HTML" file:


Your files has been encrypted using RSA-4096 algorithm with unique public-key stored on your PC.

There is  only one way   to get your files back:  contact with us,  pay,  and get  decryptor software.

We accept Bitcoin, and other cryptocurrencies,  you can find exchangers on  

You have unique idkey (in a yellow frame), write it in letter when contact with us.

Also you can decrypt 2 files as a test, its a guarantee we can decrypt your files.

!!! IDKEY !!!

E-mail #1:
E-mail #2:

Screenshot of files encrypted by MARRACRYPT (".MARRA" extension):

Files encrypted by MARRACRYPT ransomware (.MARRA extension)

MARRACRYPT ransomware removal:

Instant automatic malware removal: Manual threat removal might be a lengthy and complicated process that requires advanced computer skills. Spyhunter is a professional automatic malware removal tool that is recommended to get rid of malware. Download it by clicking the button below:
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Quick menu:

Step 1

Windows XP and Windows 7 users: Start your computer in Safe Mode. Click Start, click Shut Down, click Restart, click OK. During your computer start process, press the F8 key on your keyboard multiple times until you see the Windows Advanced Option menu, and then select Safe Mode with Networking from the list.

Safe Mode with Networking

Video showing how to start Windows 7 in "Safe Mode with Networking":

Windows 8 users: Start Windows 8 is Safe Mode with Networking - Go to Windows 8 Start Screen, type Advanced, in the search results select Settings. Click Advanced startup options, in the opened "General PC Settings" window, select Advanced startup. Click the "Restart now" button. Your computer will now restart into the "Advanced Startup options menu". Click the "Troubleshoot" button, and then click the "Advanced options" button. In the advanced option screen, click "Startup settings". Click the "Restart" button. Your PC will restart into the Startup Settings screen. Press F5 to boot in Safe Mode with Networking.

Windows 8 Safe Mode with networking

Video showing how to start Windows 8 in "Safe Mode with Networking":

Windows 10 users: Click the Windows logo and select the Power icon. In the opened menu click "Restart" while holding "Shift" button on your keyboard. In the "choose an option" window click on the "Troubleshoot", next select "Advanced options". In the advanced options menu select "Startup Settings" and click on the "Restart" button. In the following window you should click the "F5" button on your keyboard. This will restart your operating system in safe mode with networking.

windows 10 safe mode with networking

Video showing how to start Windows 10 in "Safe Mode with Networking":

Step 2

Log in to the account infected with the MARRACRYPT virus. Start your Internet browser and download a legitimate anti-spyware program. Update the anti-spyware software and start a full system scan. Remove all entries detected.

If you cannot start your computer in Safe Mode with Networking, try performing a System Restore.

Video showing how to remove ransomware virus using "Safe Mode with Command Prompt" and "System Restore":

1. During your computer start process, press the F8 key on your keyboard multiple times until the Windows Advanced Options menu appears, and then select Safe Mode with Command Prompt from the list and press ENTER.

Boot your computer in Safe Mode with Command Prompt

2. When Command Prompt mode loads, enter the following line: cd restore and press ENTER.

system restore using command prompt type cd restore

3. Next, type this line: rstrui.exe and press ENTER.

system restore using command prompt rstrui.exe

4. In the opened window, click "Next".

restore system files and settings

5. Select one of the available Restore Points and click "Next" (this will restore your computer system to an earlier time and date, prior to the MARRACRYPT ransomware virus infiltrating your PC).

select a restore point

6. In the opened window, click "Yes".

run system restore

7. After restoring your computer to a previous date, download and scan your PC with recommended malware removal software to eliminate any remaining MARRACRYPT ransomware files.

To restore individual files encrypted by this ransomware, try using Windows Previous Versions feature. This method is only effective if the System Restore function was enabled on an infected operating system. Note that some variants of MARRACRYPT are known to remove Shadow Volume Copies of the files, so this method may not work on all computers.

To restore a file, right-click over it, go into Properties, and select the Previous Versions tab. If the relevant file has a Restore Point, select it and click the "Restore" button.

Restoring files encrypted by CryptoDefense

If you cannot start your computer in Safe Mode with Networking (or with Command Prompt), boot your computer using a rescue disk. Some variants of ransomware disable Safe Mode making its removal complicated. For this step, you require access to another computer.

To regain control of the files encrypted by MARRACRYPT, you can also try using a program called Shadow Explorer. More information on how to use this program is available here.

shadow explorer screenshot

To protect your computer from file encryption ransomware such as this, use reputable antivirus and anti-spyware programs. As an extra protection method, you can use programs called HitmanPro.Alert and EasySync CryptoMonitor, which artificially implant group policy objects into the registry to block rogue programs such as MARRACRYPT ransomware.

Note that Windows 10 Fall Creators Update includes a "Controlled Folder Access" feature that blocks ransomware attempts to encrypt your files. By default, this feature automatically protects files stored in the Documents, Pictures, Videos, Music, Favorites, and Desktop folders.

Controll Folder Access

Windows 10 users should install this update to protect their data from ransomware attacks. Here is more information on how to get this update and add an additional protection layer from ransomware infections.

HitmanPro.Alert CryptoGuard - detects encryption of files and neutralises any attempts without need for user-intervention:

hitmanproalert ransomware prevention application

Malwarebytes Anti-Ransomware Beta uses advanced proactive technology that monitors ransomware activity and terminates it immediately - before reaching users' files:

malwarebytes anti-ransomware

  • The best way to avoid damage from ransomware infections is to maintain regular up-to-date backups. More information on online backup solutions and data recovery software Here.

Other tools known to remove MARRACRYPT ransomware:

About the author:

Tomas Meskauskas

Tomas Meskauskas - expert security researcher, professional malware analyst.

I am passionate about computer security and technology. I have an experience of over 10 years working in various companies related to computer technical issue solving and Internet security. I have been working as an author and editor for since 2010. Follow me on Twitter and LinkedIn to stay informed about the latest online security threats. Contact Tomas Meskauskas.

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Malware activity

Global malware activity level today:

Medium threat activity

Increased attack rate of infections detected within the last 24 hours.

QR Code
MARRACRYPT virus QR code
A QR code (Quick Response Code) is a machine-readable code which stores URLs and other information. This code can be read using a camera on a smartphone or a tablet. Scan this QR code to have an easy access removal guide of MARRACRYPT virus on your mobile device.
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