Hermes837 Ransomware
Hermes837 is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on September 1, 2019, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: Haka, Cobain, Jenkins, Voyager, Hendrix, Dragon.
Quick facts
How Hermes837 ransomware works
File encryption patterns
Hermes837 modifies encrypted files using specific patterns to mark them as encrypted:
Ransom note and payment demands
After encrypting files, Hermes837 displays ransom notes demanding payment for file recovery:
notes/!!!READ_ME_FIRST!!!.txt
notes/!!!READ_ME!!!.txt
notes/!READ_ME.txt
Technical indicators
Associated executable files
The following executable files are associated with Hermes837 ransomware:
- jenkins_en.exe
- voyager_en.exe
About this analysis
This Hermes837 ransomware analysis is part of Elastio's comprehensive ransomware detection database. Elastio provides advanced ransomware protection and recovery, helping organizations defend against and recover from ransomware attacks like Hermes837.
Last updated: December 30, 2025
Elastio detects Hermes837 inside your data and backups.
The Hunt Engine uses Deep File Inspection to identify Hermes837 across live data, replicated data, and backups. If this family is in your environment, Elastio finds it before encryption completes. Run a scan against your recovery points to confirm.
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