Ransomware Research

CryptoMix-XZZX Ransomware

CryptoMix-XZZX is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on November 1, 2017, this ransomware has been actively targeting systems worldwide.

Quick facts

Ransomware Family
CryptoMix-XZZX
First Seen
November 1, 2017

How CryptoMix-XZZX ransomware works

File encryption patterns

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

Extensions added after encryption
.XZZX

Ransom note and payment demands

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

file_HELP_INSTRUCTION.TXT
notes/_HELP_INSTRUCTION.TXT
Location: EveryFolder

Technical indicators

Associated executable files

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

About this analysis

This CryptoMix-XZZX 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-XZZX.

Last updated: December 30, 2025

Detection coverage

Elastio detects CryptoMix-XZZX inside your data and backups.

The Hunt Engine uses Deep File Inspection to identify CryptoMix-XZZX 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.

See How the Hunt Engine WorksRequest a Demo

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