Ransomware Research
ETHAN Ransomware
ETHAN is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on February 1, 2025, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- ETHAN
- First Seen
- February 1, 2025
How ETHAN Ransomware Works
File Encryption Patterns
ETHAN modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..ETHANRansom Note and Payment Demands
After encrypting files, ETHAN displays ransom notes demanding payment for file recovery:
READ_NOTE.htmlRansom message:
notes/READ_NOTE.html
Note locations:
EveryFolderRansom message:
notes/output.png
Note locations:
DesktopTechnical Indicators
Associated Executable Files
The following executable files are associated with ETHAN ransomware:
ETHAN.exe
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About This Analysis
This ETHAN 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 ETHAN.
Last updated: July 30, 2025