Uninstall TROLL ransomware

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

TROLL ransomware removal instructions

What is TROLL?

Discovered by Michael Gillespie, TROLL is one of many programs classified as ransomware - malicious software that denies access to files by encryption. Cyber criminals use TROLL to force people to pay ransoms. Furthermore, it renames all encrypted files by adding the ".TROLL" extension to each filename. For example, "1.jpg" becomes "1.jpg.TROLL". Information about how to decrypt data is provided in the "HOW TO BACK YOUR FILES.txt" text file. This file is stored in all folders that contain locked (encrypted) files.

The "HOW TO BACK YOUR FILES.txt" ransom message states that, to decrypt files, people are required to use a decryption tool. To obtain this, victims are instructed to send an email message to zoye1596@msgden.net, which must include the appointed personal ID. Additionally, it can also include a few files that TROLL's developers will supposedly decrypt free of charge. According to the ransom message, these cyber criminals will then reply with instructions about how to pay for the decryption tool, which will be sent after the payment. Victims are urged not to try to decrypt files by other means, since this might damage them. Unfortunately, only TROLL's developers can provide any decryption keys/tools, however, cyber criminals cannot be trusted - they receive ransom payments and then ignore victims without sending any decryption tools/keys. Note that encryption caused by ransomware is impossible to 'crack'. The only way to decrypt files is to use the correct tools and keys. Since there is no way to obtain these free of charge, the best option is to recover files using a backup (if data was backed up prior to the ransomware infection).

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

TROLL decrypt instructions

There are many other ransomware-type programs online including, for example, Amigo X-3, Non, and Neras. They might be developed by different cyber criminals, however, most encrypt data and create ransom messages. The most common differences are cost of decryption and cryptography algorithm (symmetric or asymmetric) that was used to lock data. Generally, victims cannot decrypt their files without the correct tool or key, unless the program is still in development or contains bugs/flaws. To prevent data loss caused by programs of this type, have data backed-up and store all backups on unplugged storage devices or remote servers (such as Cloud).

How did ransomware infect my computer?

Malware is spread using spam campaigns, which send emails that contain malicious attachments. They infect systems when recipients open the files. These attachments are usually Microsoft Office documents, PDF documents, archive files (RAR, ZIP and others), .exe and other executables, JavaScript files and so on. If a computer is infected with a trojans, it is likely that it will download and install other malicious programs such as ransomware. When a trojan is installed, it causes chain infections. Furthermore, malicious programs are spread through fake/unofficial software updaters. These install malware rather than updates and fixes, or they exploit bugs and flaws of installed, outdated software. If software is downloaded using P2P (Peer-to-Peer) networks, free file hosting websites, freeware download websites or other similar channels, this might be the reason behind computer infections. Files or programs presented in such channels are often disguised as legitimate, however, once downloaded and opened, they install malware. Computers are infected with ransomware or other malicious software through software 'cracking' tools. Typically, people use them to bypass activation of paid software, however, these tools often download and install malicious programs.

Threat Summary:
Name TROLL virus
Threat Type Ransomware, Crypto Virus, Files locker
Encrypted Files Extension .TROLL
Ransom Demanding Message HOW TO BACK YOUR FILES.txt
Cyber Criminal Contact zoye1596@msgden.net
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, software 'cracking' tools, unofficial software update tools
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?

Avoid opening attachments and web links that are received from unknown/suspicious addresses or if the email is irrelevant even when presented as legitimate/official. Use official and trustworthy sources to download software or files. No other sources can be trusted. Update programs with implemented functions and tools provided by the official software developers. Do not activate software with 'cracking' tools, since they are illegal and often proliferate malware. Have reputable anti-virus or and anti-spyware software installed and enabled at all times. Additionally, scan the operating system for threats regularly. If your computer is already infected with TROLL, we recommend running a scan with Malwarebytes for Windows to automatically eliminate this ransomware.

Text presented in TROLL ransomware text file :

                     YOUR FILES ARE ENCRYPTED !!!




To recover data you need decrypt tool.

To get the decrypt tool you should:

1.In the letter include your personal ID! Send me this ID in your first email to me!
2.We can give you free test for decrypt few files (NOT VALUE) and assign the price for decryption all files!
3.After we send you instruction how to pay for decrypt tool and after payment you will receive a decryption tool!
4.We can decrypt few files in quality the evidence that we have the decoder.






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

Files encrypted by TROLL

TROLL 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 TROLL 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 TROLL 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 TROLL 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 TROLL 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 TROLL, 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 TROLL 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 Documents, Pictures, Videos, Music, Favorites as well as 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 TROLL 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 pcrisk.com 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
TROLL 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 TROLL virus on your mobile device.
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