Ransomware Research

HaroldSquarepants Ransomware

HaroldSquarepants is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on October 1, 2024, this ransomware has been actively targeting systems worldwide.

Quick Facts

Ransomware Family
HaroldSquarepants
First Seen
October 1, 2024

How HaroldSquarepants Ransomware Works

File Encryption Patterns

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

File extensions added after encryption:

..247_haroldsquarepants

Ransom Note and Payment Demands

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

filehow_to_back_files.html

Ransom message:

notes/how_to_back_files.html

Note locations:

EveryFolder

Technical Indicators

Associated Executable Files

The following executable files are associated with HaroldSquarepants ransomware:

  • 247_haroldsquarepants.exe

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About This Analysis

This HaroldSquarepants 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 HaroldSquarepants.

Last updated: July 30, 2025

HaroldSquarepants Ransomware - Detectable by Elastio