Ransomware Research

CryptoMix-Revenge Ransomware

CryptoMix-Revenge is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on March 1, 2017, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: Revenge.

Quick facts

Ransomware Family
CryptoMix-Revenge
First Seen
March 1, 2017
Known Aliases
Revenge

How CryptoMix-Revenge ransomware works

File encryption patterns

CryptoMix-Revenge modifies encrypted files using specific patterns to mark them as encrypted:

Extensions added after encryption
.REVENGE.SYS.DAT

Ransom note and payment demands

After encrypting files, CryptoMix-Revenge displays ransom notes demanding payment for file recovery:

file_HELP_INSTRUCTION.TXT
notes/_HELP_INSTRUCTION.TXT
Location: EveryFolder
file# !!!HELP_FILE!!! #.TXT
notes/# !!!HELP_FILE!!! #.TXT
Location: EveryFolder

Technical indicators

Associated executable files

The following executable files are associated with CryptoMix-Revenge ransomware:

About this analysis

This CryptoMix-Revenge 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 CryptoMix-Revenge.

Last updated: December 30, 2025

Detection coverage

Elastio detects CryptoMix-Revenge inside your data and backups.

The Hunt Engine uses Deep File Inspection to identify CryptoMix-Revenge 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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What is CryptoMix-Revenge Ransomware? | Elastio