Ransomware Research

GoNNaCrypt Ransomware

GoNNaCrypt is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on May 1, 2021, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: GoNNaCry.

Quick Facts

Ransomware Family
GoNNaCrypt
First Seen
May 1, 2021
Known Aliases
GoNNaCry

How GoNNaCrypt Ransomware Works

File Encryption Patterns

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

File extensions added after encryption:

..GoNNaCry

Ransom Note and Payment Demands

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

fileGoNNaCry.html

Ransom message:

notes/GoNNaCry.html

Note locations:

Desktop

Technical Indicators

Associated Executable Files

The following executable files are associated with GoNNaCrypt ransomware:

  • WindowsSecurityUpdate.exe
  • compile by raminhk.exe
  • Compil by raminhk.exe
  • Compile by raminhk.exe
  • Compile.exe

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About This Analysis

This GoNNaCrypt 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 GoNNaCrypt.

Last updated: October 30, 2025

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