Garrantydecrypt Ransomware

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

Garrantydecrypt ransomware removal instructions

What is Garrantydecrypt?

Garrantydecrypt is another ransomware-type virus discovered by Michael Gillespie. After successfully infiltrating the system, Garrantydecrypt encrypts most stored data, thereby making it unusable. In addition, Garrantydecrypt adds the ".garrantydecrypt" appendix to the name of each compromised file. For example, "sample.jpg" is renamed to "sample.jpg.garrantydecrypt". Updated variants of this ransomware use ".popoticus", ".decryptgarranty" and ".tater" extensions for encrypted files. Once encryption is complete, Garrantydecrypt generates a text file named "#RECOVERY_FILES#.txt" and places a copy on the victim's desktop.

The new text file contains a very short message stating that data is encrypted and that users must contact Garrantydecrypt's developers if they want to restore it. No additional information regarding the encryption is provided and thus it is currently unknown whether Garrantydecrypt uses symmetric or asymmetric cryptography. In any case, decryption requires a unique key generated individually for each victim. All keys are stored on a remote server controlled by cyber criminals. Therefore, after contacting these people, users are asked to pay ransoms in exchange for release of their keys. In most cases, criminals demand $500-1500 in Bitcoins, Monero, DASH, or another cryptocurrency. Note that cyber criminals cannot be trusted. Research shows that these people often ignore victims, once payments are submitted. Therefore, ignore all requests to contact these people and do not submit payments. Unfortunately, there are no tools capable of cracking Garrantydecrypt encryption and restoring data free of charge. The only solution is to restore everything from a backup.

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

Garrantydecrypt decrypt instructions

There are dozens of ransomware-type viruses that share similarities with Garrantydecrypt including GandCrab 5.0.2, Koolova, Dharma-Btc, and NOT_OPEN LOCKER - the list goes on. Although these viruses are developed by different cyber criminals, their behavior is identical - all encrypt data and make ransom demands. In most cases, viruses such as Garrantydecrypt have just two major differences: cost of decryption and type of cryptography used. Most employ algorithms designed to generate unique decryption keys. Therefore, unless the virus is not fully developed or has certain bugs/flaws (the key is hard-coded, stored locally, etc.), restoring data manually without involvement of developers (contacting these people is not recommended) is impossible. Ransomware-type viruses are one of the main reasons why you should maintain regular data backups, however, it is important to store them on a remote server (e.g., Cloud) or an unplugged storage device. If not, backups are encrypted with regular data.

How did ransomware infect my computer?

Ransomware-type viruses are often distributed using trojans, spam email campaigns, peer-to-peer (P2P) networks, third party software download sources, and fake software update tools. Trojans cause various chain infections - one virus distributes another. Spam campaigns proliferate malicious attachments that, once opened, infiltrate viruses into the system. P2P networks (torrents, eMule, etc.) and other unofficial software download sources (free file hosting websites, freeware download websites, etc.) present malicious executables as legitimate software, often tricking users into downloading and installing viruses. Fake software updaters infect computers by exploiting outdated software bugs/flaws or simply downloading and installing malware rather than promised updates.

Threat Summary:
Name Garrantydecrypt virus
Threat Type Ransomware, Crypto Virus, Files locker
Symptoms Can't open files stored on your computer, previously functional files now have a different extension, for example my.docx.locked. A ransom demanding message is displayed on your desktop. Cyber criminals are asking to pay 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.

To eliminate Garrantydecrypt virus our malware researchers recommend scanning your computer with Spyhunter.
▼ Download Spyhunter
Free scanner checks if your computer is infected. To remove malware, you have to purchase the full version of Spyhunter.

How to protect yourself from ransomware infections?

To prevent this situation, be very cautious when browsing the internet and downloading, installing, and updating software. Carefully analyze all steps of the download/installation processes. Think twice before opening email attachments. If the file is irrelevant/unexpected or the sender seem suspicious, do not open it. Furthermore, download your programs from official sources only and avoid using third party downloaders/installers, since developers monetize them by promoting rogue software. The same rule applies to software updates. It is important to keep installed programs up-to-date, however, this should be achieved through implemented functions or tools provided by the official developer only. Having a reputable anti-virus/anti-spyware suite installed and running is also paramount, since these tools can detect and eliminate viruses before they do any damage. If your computer is already infected with Garrantydecrypt, we recommend running a scan with Spyhunter for Windows to automatically eliminate this ransomware.

Text presented in Garrantydecrypt ransomware text file ("#RECOVERY_FILES#.txt"):

All your files have been ENCRYPTED
Do you really want to restore your files?
Write to our email -
and tell us your unique ID

Screenshot of files encrypted by Garrantydecrypt (".garrantydecrypt" extension):

Files encrypted by Garrantydecrypt

Update 17 December, 2018 - Garrantydecrypt's developers released an updated version which uses a different ransom-demanding message:

Screenshot of the text file:

Garrantydecrypt ransomware new text file

Text presented within this text file:

File protector Ultimate license error.


All your files is safe! Dont worry.

You only need to update subscription to unblock your
protected files *.prl or become a legal user.

Send 0.25 Bitcoins to 19zbUWvkcYjPvg1ri5XprRR56z8KUkjtbj with MAX fee only! Or if you want transactions will lost in network or returned to you, and you may lost your files.

Only after you send btc and recive 1 confirmation, send email to or

With this information below:

Bitcoin Transaction ID (no links)

Your %e@mail% (System will send to it legal copy of software with actiovation key)

######And just copy and past text below.

License payment confirmation agree

Garrantydecrypt ransomware removal:

Instant automatic removal of Garrantydecrypt virus: 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 Garrantydecrypt virus. Download it by clicking the button below:
▼ DOWNLOAD Spyhunter By downloading any software listed on this website you agree to our Privacy Policy and Terms of Use. Free scanner checks if your computer is infected. To remove malware, you have to purchase the full version of Spyhunter.

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 Garrantydecrypt 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 Garrantydecrypt 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 Garrantydecrypt 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 Garrantydecrypt 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 Garrantydecrypt, 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 Garrantydecrypt 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 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 Garrantydecrypt 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 virus and spyware activity level today:

Medium threat activity

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

QR Code
Garrantydecrypt virus QR code
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Platform: Windows

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