Ransomware Research
PetyaX Ransomware
PetyaX is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on April 1, 2025, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- PetyaX
- First Seen
- April 1, 2025
How PetyaX Ransomware Works
File Encryption Patterns
PetyaX modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..petyaxRansom Note and Payment Demands
After encrypting files, PetyaX displays ransom notes demanding payment for file recovery:
note.htmlRansom message:
notes/note.html
Note locations:
EveryFolderTechnical Indicators
Associated Executable Files
The following executable files are associated with PetyaX ransomware:
PetyaX.dllPetyaX.exe
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About This Analysis
This PetyaX ransomware analysis is part of Elastio's comprehensive ransomware detection database. Elastio provides advanced ransomware protection and recovery solutions, helping organizations defend against and recover from ransomware attacks like PetyaX.
Last updated: October 30, 2025
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