Ransomware Research

HermesVirus HT Ransomware

HermesVirus HT is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on April 1, 2019, this ransomware has been actively targeting systems worldwide.

Quick Facts

Ransomware Family
HermesVirus HT
First Seen
April 1, 2019

How HermesVirus HT Ransomware Works

File Encryption Patterns

HermesVirus HT modifies encrypted files using specific patterns to mark them as encrypted:

File extensions added after encryption:

..hermes

Ransom Note and Payment Demands

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

fileHERMES DECRYPT FILES.txt

Ransom message:

notes/HERMES DECRYPT FILES.txt

Note locations:

Desktop
fileHOW TO DECRYPT FILES.txt

Ransom message:

notes/HOW TO DECRYPT FILES.txt

Note locations:

Desktop

Technical Indicators

Associated Executable Files

The following executable files are associated with HermesVirus HT ransomware:

  • Hermes.exe
  • myfile.exe
  • Setup.exe

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About This Analysis

This HermesVirus HT 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 HermesVirus HT.

Last updated: October 30, 2025

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