Ransomware Research
Cyclops Ransomware
Cyclops is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on June 1, 2021, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- Cyclops
- First Seen
- June 1, 2021
How Cyclops Ransomware Works
Targeted Files
https://tria.ge/240304-t2w3xafg86/behavioral1
File Encryption Patterns
Cyclops modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..CyclopsRansom Note and Payment Demands
After encrypting files, Cyclops displays ransom notes demanding payment for file recovery:
Ransom message:
notes/note.txt
Note locations:
OnceOnCompletionEncrypted.txtRansom message:
notes/Encrypted.txt
Note locations:
DesktopTechnical Indicators
Associated Executable Files
The following executable files are associated with Cyclops ransomware:
Cyclops.exe
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About This Analysis
This Cyclops 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 Cyclops.
Last updated: July 30, 2025