How to remove ROGER ransomware from the operating system

Also Known As: ROGER virus
Distribution: Moderate
Damage level: Severe

ROGER ransomware removal instructions

What is ROGER?

Discovered by Jakub Kroustek, ROGER is a malicious program belonging to the Crysis/Dharma ransomware family. It operates by encrypting data and demanding ransom payments for decryption tools/software. During the encryption process all affected files are renamed with the victim's unique ID, developer's email address, and the ".ROGER" extension. For example, "1.jpg" might appear as something similar to "[].ROGER". Once this process is complete, a text file ("FILES ENCRYPTED.txt") is created on the desktop and a pop-up window is displayed. Other variants of this ransomware use ".[].ROGER", ".[].ROGER", ".[].ROGER", ".[].ROGER", ".[].ROGER", ".[].ROGER", ".[].ROGER", ".[].ROGER", ".[].ROGER", ".[].ROGER", ".[].ROGER", ".[].ROGER", ".[].ROGER", ".[].ROGER", ".[].ROGER", ".[].ROGER", ".[].ROGER", ".[].ROGER", ".[].ROGER", and ".[].ROGER" extensions for encrypted files.

The message within the text file states that all data has been encrypted. To return it to its original condition, users are instructed to contact the cyber criminals behind this infection via the email address listed. The text presented in the pop-up window is a more detailed ransom message. It informs users that they must try reach ROGER's developers through the web-link given. This link can only be opened with the Tor browser. Should their attempts at establishing communication yield no results within twelve hours, victims must contact the developers using the email address. The message ends with warnings, which instruct users not to rename the compromised files and/or try decrypting them with third party software, as that can lead to permanent data loss. In most cases of ransomware infections, manual decryption (i.e., without the involvement of the criminals behind the malware) is impossible. Typically, only the program used for the encryption is capable of breaking it, however, you are strongly advised against contacting and/or meeting the demands of cyber criminals. Despite paying, users often receive none of the necessary tools and their data remains encrypted, and essentially useless. To prevent ROGER from further encryption, it must be removed. Unfortunately, removal will not restore already encrypted data. This can be recovered from a backup, provided one was made prior to the infection and stored in a separate location.

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

ROGER decrypt instructions

All ransomware is designed to encrypt files and demand ransoms to be paid. These infections differ by the cryptographic algorithm (symmetric or asymmetric) used for encryption and payment size. Ransoms usually vary between three and four digit sums (in USD). Common currencies include various cryptocurrencies, pre-paid vouchers and other digital currencies - they are chosen since the transactions are difficult/impossible to trace. Unless ransomware is still in development and/or has certain flaws/bugs, decryption with third party software is not a viable option. SaveTheQueenCalumSpartCrypt, and MarioLocker are some examples of other malware, under the same classification as ROGER. To ensure data safety, keep backups on unplugged storage devices and/or remote servers. Preferably, multiple backup copies should be stored in several different locations.

How did ransomware infect my computer?

Trojans, spam campaigns, untrustworthy download channels, software "cracking" (activation) tools and fake updaters are the primary proliferation methods of ransomware and other malware. Trojans are malicious programs, capable of causing chain infections (i.e., they download/install additional malware). Large scale spam campaigns are used to send deceptive emails, containing infectious files (or links leading to them). These messages are rarely suspicious and frequently disguised as "official", "important", "urgent" or similar priority mail. The attachments come in various formats (e.g. archive and executable files, PDF and Microsoft Office documents, JavaScript, etc.). Opening them triggers them to start infecting the system. Untrustworthy download channels, such as P2P sharing networks (BitTorrent, eMule, Gnutella, etc.), unofficial and free file-hosting sites, third party downloaders and so on are more likely to offer malicious content disguised as regular programs and/or normal software bundled with it. Rather than activating licensed products, "cracking" tools often cause infections. Fake updaters exploit weaknesses in outdated programs and/or simply install malware, rather than the promised updates.

Threat Summary:
Name ROGER virus
Threat Type Ransomware, Crypto Virus, Files locker.
Encrypted Files Extension .ROGER (files are also appended with the user's unique ID and developer's email address).
Ransom Demanding Message FILES ENCRYPTED.txt
Cyber Criminal Contact and Tor browser website
Detection Names Avast (Win32:RansomX-gen [Ransom]), BitDefender (Trojan.Ransom.Crysis.E), ESET-NOD32 (A Variant Of Win32/Filecoder.Crysis.P), Kaspersky (, 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.
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

You are advised against opening dubious and/or irrelevant emails. All attachments (and links) found in suspect mail must never be opened, as they are the source of a potential infection. Use official and verified download channels, as opposed to sharing networks and other third party downloaders. Programs should be activated and updated with tools/functions provided by legitimate developers. Illegal activation tools ("cracks") and third updaters should not be used, due to risk of malware installation. Have a reputable anti-virus/anti-spyware suite installed and kept updated. Furthermore, this software should be used to perform regular system scans and removal of detected threats/issues. If your computer is already infected with ROGER, we recommend running a scan with Malwarebytes for Windows to automatically eliminate this ransomware.

Text presented in ROGER ransomware pop-up window:

Don't worry,you can return all your files!
If you want to restore them, follow this link:zombietry4o3nzeh.onion/?ticket=Rt31ws32vJLxvwudeH_1E857D00
Use Tor Browser to access this address.
If you have not been answered via the link within 12 hours, write to us by
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.

Screenshot of ROGER text file ("FILES ENCRYPTED.txt"):

ROGER text file

Text presented in this file:


Screenshot of files encrypted by ROGER (".ROGER" extension):

Files encrypted by ROGER

Update February 19, 2020 - Cyber criminals have recently started spreading ROGER ransomware via email spam campaigns that target users from Italy. The email is written in Italian language and usually contains a download link (leading to file a sharing service, e.g., OneDrive) of a malicious file (our analyze variant was a .VBS file). These attachments are presented as invoices.

Example of an email from this spam campaign:

Spam email used to spread ROGER ransomware

Text presented within this email:

Subject: Fattura n. 637 del 14.01.20


Gentile cliente,

in allegato alla presente Le trasmetto la nostra fattura.

Si precisa che questa modalita d'invio, tramite posta elettronica,

sostituisce la spedizione catacea e che i documenti allegati

costituiranno l'orginale della fattura


Si prega dare gentile conferma di lettura

Screenshot of the malicious files distributed via this spam campaign:

Malicious email attachment used to distribute ROGER ransomware

ROGER 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 ROGER 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 ROGER 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 ROGER 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 ROGER 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 ROGER, 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 ROGER 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 ROGER 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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Removal Instructions in other languages
Malware activity

Global malware activity level today:

Medium threat activity

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

QR Code
ROGER 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 ROGER virus on your mobile device.
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