How to remove RedRum ransomware

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

RedRum ransomware removal instructions

What is RedRum?

RedRum encrypts files, rendering them inaccessible unless victims recover them with decryption software and keys that can purchased from the cyber criminals who designed this ransomware. RedRum renames all encrypted files by adding the victim's ID and email address to their filenames and appending the ".redrum" extension. For example, "1.jpg" might be changed to " [] .redrum" or similar (updated variants append ".thanos" and ".grinch" extensions). It also stores ransom messages in the form of text files (named "decryption.txt") in all folders that contain encrypted files.

The "decryption.txt" text file states that victims must contact cyber criminals via the (or email address and provide the appointed ID. They are encouraged to do so immediately, since, once 60 hours after encryption has passed, the cost of decryption software and key will increase by 10% per day. The cost of the decryption tools is unknown, however, it is made clear that decryption without them is impossible. Victims supposedly receive these assets after payment, however, you are not advised to trust or pay any cyber criminals (ransomware developers) - they often send no decryption tools, even if victims meet all demands. Only the people who develop ransomware (in this case, RedRum) hold tools that can decrypt files encrypted by the program. Typically, the only way to avoid being scammed and recover files without making payment is to restore them from an existing backup. Removal of the ransomware does not decrypt files, it simply prevents the malware from causing any further encryption.

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

RedRum decrypt instructions (decryption.txt)

Most ransomware-type programs are similar: they encrypt files and keep them inaccessible unless a ransom is paid (decryption software and/or key is purchased). Common differences are usually cost of decryption, and cryptographic algorithm (symmetric or asymmetric) used to encrypt/lock data. Unfortunately, files cannot be recovered without specific tools held by the developers of the ransomware, unless the ransomware is not fully developed, contains bugs/flaws, etc. Therefore, have data backed up and keep it on a remote server and/or unplugged storage device. Examples of other ransomware are Bobelectron, Nbes and DMR64.

How did ransomware infect my computer?

Cyber criminals usually proliferate ransomware and other malware through emails (spam campaigns), Trojans, dubious file and software download channels/sources, fake software updating and unofficial activation tools. They often send emails that contain malicious attachments. They present the emails as important, official, etc., and hope that recipients open the attached files. If opened, this installs malicious software such as ransomware. Examples of files that they usually attach are MS Office, PDF documents, JavaScript files, executable files (.exe), archives (ZIP, RAR), and so on. Trojans are malicious programs that, if installed, often install other malware. In this way, Trojans cause chain infections. Examples of dubious file and software download channels are unofficial websites, free file hosting pages, freeware download sites, Peer-to-Peer networks (e.g., torrent clients, eMule), third party downloaders, and so on. These channels are often used to proliferate malware by uploading malicious files and disguising them as regular or harmless. People who open files downloaded from these sources risk installation of malicious programs. Fake software updating tools infect operating systems by downloading and installing malicious software rather than providing updates, or by exploiting bugs/flaws of installed software that is out of date. Unofficial activation ('cracking') tools supposedly bypass activation of licensed software without payment, however, they often infect systems with malware.

Threat Summary:
Name RedRum virus
Threat Type Ransomware, Crypto Virus, Files locker.
Encrypted Files Extension .redrum
Ransom Demanding Message decryption.txt
Cyber Criminal Contact,
Detection Names Avast (Win32:Trojan-gen), BitDefender (Trojan.GenericKD.41942488), ESET-NOD32 (Python/ClipBanker.O), Kaspersky (Trojan-Banker.Win32.ClipBanker.gdm), Full List Of Detections (VirusTotal)
Rogue Process Name Local Security Authority Process1.exe
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.
Malware Removal (Windows)

To eliminate possible malware infections, scan your computer with legitimate antivirus software. Our security researchers recommend using Malwarebytes.
▼ Download Malwarebytes
To use full-featured product, you have to purchase a license for Malwarebytes. 14 days free trial available.

How to protect yourself from ransomware infections

Do not download files or programs from unofficial web pages or other dubious sources (mentioned above). Download only from official websites and via direct download links. Do not trust emails that contain attachments (and/or web links) and are received from unknown, suspicious addresses. Note that malicious attachments/files cannot do any harm if they are left unopened. Installed software should be updated using tools and/or implemented functions that are designed by official software developers. The same applies to activation of licensed software. Various unofficial ('cracking') tools are illegal and are often designed to distribute and install malware. It is also important to regularly scan the operating system with reputable antivirus or anti-spyware software. Keep these programs up to date. If your computer is already infected with RedRum, we recommend running a scan with Malwarebytes for Windows to automatically eliminate this ransomware.

Text presented in RedRum ransomware text file ("decryption.txt"):

All your documents, photos, databases and other important files have been ENCRYPTED! Do you really interested to restore
your files?
If so, you must buy decipher software and private key to unlock your data!
Write to our email - and tell us your unique D992041A
We will send you full instruction how to decrypt all your files.
In case of no answer in 24 hours write us on additional e-mail address -



Your files are NOT DAMAGED! Your files have been modified and encrypted with strong cipher algorithm. This modification
is reversible. The only way to decrypt your files is to purchase the decipher software and private key. Any attempts to
restore your files with the third-party software will be fatal for your files, because would damage data essential for
decryption !

Note !!! You have only 24 hours to write us on e-mail or all your files will be lost or the decryption price will be



You have to pay for decryption in Bitcoins. The price depends on how fast you write to us. After payment we will send
you the decipher software and private key that will decrypt all your files.



Free decryption as guarantee! If you don't believe in our service and you want to see a proof, you can ask us about test
for decryption. You send us up to 5 modified files. Use file-sharing service and Win-Rar to send files for test. Files
have to be less than 1 MB (non archived). Files should not be important! Don't send us databases, backups, large excel
files, etc.  We will decrypt and send you your decrypted files back as a proof!



This is done so that you can make sure that only we can decrypt your files and that there will be no problems with the



There are two simple ways to by bitcoins:
Read this information carefully because it's enough to purchase even in large amounts.


!!! After 60 hours the price for your encryption will increase 10 percent each day
!!! Do not rename encrypted files.
!!! Do not try to decrypt your data using third party software, it may cause permanent data loss.
!!! Decryption of your files with the help of third parties may cause increased price (they add their fee to our) or you
can become a victim of a scam.

The appearance of RedRum ransomware pop-up (GIF):

RedRum ransomware pop-up gif

Screenshot of files encrypted by RedRum (".redrum" extension):

Files encrypted by RedRum ransomware (.redrum extension)

Malicious RedRum process running in Task Manager as "Local Security Authority Process1.exe":

RedRum running in task manager as Local Security Authority Process1.exe

Update June 5, 2020 - Emsisoft has recently released a decryption tool capable of restoring data encrypted by RedRum ransomware. You can find the user manual and download the tool in Emsisoft's website.

Screenshot of Emsisoft's RedRum decryptor:

RedRum decryptor by Emsisoft

RedRum ransomware removal:

Instant automatic malware removal: Manual threat removal might be a lengthy and complicated process that requires advanced computer skills. Malwarebytes 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 RedRum 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 RedRum 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 RedRum 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 RedRum 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 RedRum, 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 RedRum 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 RedRum 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
RedRum virus QR code
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