ZFX Ransomware
ZFX is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on January 1, 2023, this ransomware has been actively targeting systems worldwide.
Quick facts
How ZFX ransomware works
File encryption patterns
ZFX modifies encrypted files using specific patterns to mark them as encrypted:
Ransom note and payment demands
After encrypting files, ZFX displays ransom notes demanding payment for file recovery:
notes/+README-WARNING+.txt
About this analysis
This ZFX 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 ZFX.
Last updated: December 30, 2025
Elastio detects ZFX inside your data and backups.
The Hunt Engine uses Deep File Inspection to identify ZFX 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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