Ransomware Research

GarrantyDecrypt Ransomware

GarrantyDecrypt is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on October 1, 2018, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: GarrantyDecrypt NextGen, DecryptGarranty.

Quick Facts

Ransomware Family
GarrantyDecrypt
First Seen
October 1, 2018
Known Aliases
GarrantyDecrypt NextGenDecryptGarranty

How GarrantyDecrypt Ransomware Works

File Encryption Patterns

GarrantyDecrypt modifies encrypted files using specific patterns to mark them as encrypted:

File extensions added after encryption:

..garrantydecrypt..decryptgarranty..NOSTRO..odin..cosanostra..cammora..metan..spyhunter..tater..zorin..azor..razor

Ransom Note and Payment Demands

After encrypting files, GarrantyDecrypt displays ransom notes demanding payment for file recovery:

file#RECOVERY_FILES#.txt

Ransom message:

notes/#RECOVERY_FILES#.txt

Note locations:

EveryFolder
file#HOW TO DECRYPT FILES#.txt

Ransom message:

notes/#HOW TO DECRYPT FILES#.txt
file#HOW TO DECRYPT#.txt

Ransom message:

notes/#HOW TO DECRYPT#.txt
file$HOWDECRYPT$.txt

Ransom message:

notes/$HOWDECRYPT$.txt

Note locations:

EveryFolder
file!read_me!.txt

Ransom message:

notes/!read_me!.txt

Note locations:

EveryFolder
file#RECOVERY#.txt

Ransom message:

notes/#RECOVERY#.txt

Note locations:

EveryFolder

Technical Indicators

Associated Executable Files

The following executable files are associated with GarrantyDecrypt ransomware:

  • GarrantyDecrypt.exe
  • x_91.EXE
  • garrantydecrypt.exe
  • Wmiprvse.exe
  • encryptorSA2.exe
  • Rufus
  • rufus-3.3.exe
  • Rufus.exe
  • document3.exe
  • SpyHunter5.exe
  • WmiApSrv.exe
  • WmiApSrvr.exe

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About This Analysis

This GarrantyDecrypt ransomware analysis is part of Elastio's comprehensive ransomware detection database. Elastio provides advanced ransomware protection and recovery solutions, helping organizations defend against and recover from ransomware attacks like GarrantyDecrypt.

Last updated: October 30, 2025

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