Ransomware Research
Koolova Ransomware
Koolova is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on November 1, 2016, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- Koolova
- First Seen
- November 1, 2016
How Koolova Ransomware Works
File Encryption Patterns
Koolova modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..encryptedRansom Note and Payment Demands
After encrypting files, Koolova displays ransom notes demanding payment for file recovery:
Ransom message:
notes/note.txt
Note locations:
OnceOnCompletionTechnical Indicators
Associated Executable Files
The following executable files are associated with Koolova ransomware:
Koolova Ransomware.exeKoolova_Ransomware.exes1.exeRunsome.exe
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About This Analysis
This Koolova 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 Koolova.
Last updated: July 30, 2025