How to uninstall Random Ransom ransomware?

Also Known As: Random Ransom virus
Distribution: Low
Damage level: Severe

Random Ransom ransomware removal instructions

What is Random Ransom?

Random Ransom was discovered by S!Ri. It encrypts files, modifies their filenames and displays a pop-up window with a note in it. Random Ransom changes encrypted files by appending the ".RANDOM" extension to their filenames. For example, it renames a file named "1.jpg" to "1.jpg.RANDOM", "2.jpg" to "2.jpg.RANDOM", and so on. In order to be restore (decrypt files) victims have to follow the instructions in a pop-up window.

As explained in a pop-up window ("RANDOM_RANSOM_DECRYPTOR"), victims supposed to be able to decrypt files by playing a game that can be launched by clicking the "PLAY GAME" button. Victims have to score 50 points in one hour, after that Random Ransom's developers will delete a decryption key and it will not be impossible to recover files anymore. Unlike most cyber criminals, Random Ransom's developers do not demand to be paid or contacted. Even if they would, it should not be done. It is because victims who pay a ransom often get scammed, in other words, cyber criminals do not send a decryption tool and/or key even after a payment. Unfortunately, there are no tools that could decrypt files encrypted by Random Ransom, at least not at the moment. In most cases cyber criminals are the only ones who have tools that can decrypt files encrypted by their ransomware. Usually the only free way to decrypt files is to restore them from a backup. It is worthwhile to mention that files remain encrypted even if victims uninstall ransomware from a computer, however, its uninstallation prevents if from causing further encryptions.

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

Random Ransom decrypt instructions (RANDOM_RANSOM_DECRYPTOR)

Typically ransomware is designed to encrypt files and so that victims could not access them without having to use tools that can be purchased only from cyber criminals, and create and/or display some ransom note (or notes). Two main and most common variables are price of a decryption tool and/or key and cryptographic algorithm (symmetric or asymmetric) that ransomware uses for encryption. Unfortunately, files can be decrypted for free only when ransomware is not finished (has bugs, flaws, and other vulnerabilities) and this does not happen often. That is why it is so important to always have data backed up and keep it on a remote server and/or unplugged storage device. Here are some examples of other ransomware: Revon, CCD and encS.

How did ransomware infect my computer?

It is unknown how cyber criminals distribute Random Ransom, however, in most cases ransomware (and other malware) is distributed through spam campaigns, fake software updaters, untrustworthy file and/or software download channels, Trojans and unofficial activation tools. Spam campaigns can infect computers through malicious email attachments. Usually cyber criminals send emails that contain attachments such as Microsoft Office documents, PDF documents, archive files (like ZIP, RAR), executable files (like .exe) or JavaScript files. If opened, those attachments install malicious software. It is common that cyber criminals send emails that contain website links designed to download malicious files as well. Fake, unofficial software updaters can infect computers when they are designed to exploit bugs, flaws of some outdated software, or simply install malware instead of the fixes, updates. Examples of unreliable software download channels are Peer-to-Peer networks (like eMule, torrent clients), free file hosting and freeware download websites, third party downloaders, unofficial pages, and other channels of this kind. Quite often they are used by cyber criminals who attempt to trick users into downloading malicious files that are disguised as regular, legitimate. Once downloaded and opened, those files infect a computers with some malicious programs. Trojan is a type of malicious software that can be designed to cause chain infections. When installed, they install other software of this kind. Unofficial activation ('cracking') tools supposed to bypass activation of licensed software. In other words, to activate licensed software for free. Nevertheless, quite often these tools install malware instead.

Threat Summary:
Name Random Ransom virus
Threat Type Ransomware, Crypto Virus, Files locker
Encrypted Files Extension .RANDOM
Ransom Demanding Message RANDOM_RANSOM_DECRYPTOR pop-up window
Detection Names Avast (FileRepMetagen [Malware]), BitDefender (Gen:Heur.Ransom.MSIL.1), Emsisoft (Gen:Heur.Ransom.MSIL.1 (B)), Kaspersky (HEUR:Trojan-Ransom.MSIL.Encoder.gen), 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.
Additional Information Random Ransom's developers to not demand to be paid a ransom. Victims supposed to be able to decrypt files by scoring 50 points in a game designed by these cyber criminals
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.
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How to protect yourself from ransomware infections?

Received emails that contain attachments (and/or website links), are sent from unknown, suspicious addresses should not be trusted. In other words, email contents should be opened only when there is no reason to believe that it may cause installation of malware or other issues. software should never be downloaded from untrustworthy, unofficial websites, via third party downloaders and other channels of this kind. Files and programs should be downloaded only from official websites and through direct links. Furthermore, installed programs must be updated and activated by using implemented functions and/or tools that are designed by official developers. Third party, unofficial tools can are often used to distribute unwanted, and even malicious programs. Besides, it is not legal to bypass activation of licensed software by using various unofficial ('cracking') tools. And finally, it is recommended to regularly scan the operating system with reputable anti-spyware or antivirus software and always remove detected threats as soon as possible. If your computer is already infected with Random Ransom, we recommend running a scan with Malwarebytes for Windows to automatically eliminate this ransomware.

Text presented in Random Ransom ransomware's pop-up window ("RANDOM_RANSOM_DECRYPTOR"):

0H 0M 0SEC

Hum... Looks like your files are encrypted! Sucks to be you! Well... I will help you decrypt your files :) BUT you have to play this stupid game i made. It's real simple! Just play until you have 50 points! You have 1 hour to get 50 points. If you fail, sucks to suck i guess because i will remove your key for your encrypted files which means that your files are gone! Have fun :)


Appearance of the game which supposed to help victims to decrypt files (GIF):

random ransom appearance of the game

Command Prompt window displayed during encryption:

random ransom cmd window displayed during the encryption

Screenshot of a window displayed after closing a pop-up window:

random ransom window displayed after closing the pop-up

Screenshot of files encrypted by Random Ransom (".RANDOM" extension):

Files encrypted by Random Ransom ransomware (.RANDOM extension)

Random Ransom 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 Random Ransom 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 Random Ransom 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 Random Ransom 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 Random Ransom 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 Random Ransom, 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 Random Ransom 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 Random Ransom 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.

PCrisk security portal is brought by a company RCS LT. Joined forces of security researchers help educate computer users about the latest online security threats. More information about the company RCS LT.

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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
Random Ransom virus QR code
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