Ransomware Research
CoV Ransomware
CoV is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on January 1, 2024, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- CoV
- First Seen
- January 1, 2024
How CoV Ransomware Works
File Encryption Patterns
CoV modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..CoVRansom Note and Payment Demands
After encrypting files, CoV displays ransom notes demanding payment for file recovery:
HOW TO DECRYPT FILES.txtRansom message:
notes/HOW TO DECRYPT FILES.txt
Note locations:
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About This Analysis
This CoV 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 CoV.
Last updated: July 30, 2025