Epsilon Red Ransomware
Epsilon Red is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on March 1, 2021, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: EpsilonRed PowerShellScript, EpsilonRed PSS-Ransomware.
Quick facts
How Epsilon Red ransomware works
File encryption patterns
Epsilon Red modifies encrypted files using specific patterns to mark them as encrypted:
Ransom note and payment demands
After encrypting files, Epsilon Red displays ransom notes demanding payment for file recovery:
notes/HOW_TO_RECOVER.EpsilonRed.txt
Technical indicators
Associated executable files
The following executable files are associated with Epsilon Red ransomware:
- 1.ps1
- 2.ps1
- 4.ps1
- 5.ps1
- 6.ps1
- 7.ps1
- 8.ps1
- 9.ps1
- 10.ps1
- 11.ps1
- 12.ps1
- C.ps1
- S.ps1
- P.exe
- rutserv.exe
- sJbJxCq
- dJhTeZjF
- r_install.exe
- RED.exe
About this analysis
This Epsilon Red 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 Epsilon Red.
Last updated: December 30, 2025
Elastio detects Epsilon Red inside your data and backups.
The Hunt Engine uses Deep File Inspection to identify Epsilon Red 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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