Ransomware Research
CyberThanos Ransomware
CyberThanos is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on April 1, 2020, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- CyberThanos
- First Seen
- April 1, 2020
How CyberThanos Ransomware Works
Targeted Files
Encrypts files in UserFolders only (no recursive)
File Encryption Patterns
CyberThanos modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..lockedRansom Note and Payment Demands
After encrypting files, CyberThanos displays ransom notes demanding payment for file recovery:
README_CyberThanos.txtRansom message:
notes/README_CyberThanos.txt
Note locations:
DesktopREADME.txtRansom message:
notes/README.txt
Note locations:
DesktopTechnical Indicators
Associated Executable Files
The following executable files are associated with CyberThanos ransomware:
CyberThanos.exe
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About This Analysis
This CyberThanos 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 CyberThanos.
Last updated: July 30, 2025