Ransomware Research
Karo Ransomware
Karo is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on June 1, 2017, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- Karo
- First Seen
- June 1, 2017
How Karo Ransomware Works
Targeted Files
Requires C&C (in TOR) to communicate
File Encryption Patterns
Karo modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..ipyghRansom Note and Payment Demands
After encrypting files, Karo displays ransom notes demanding payment for file recovery:
ReadMe.htmlRansom message:
notes/ReadMe.html
Note locations:
DesktopTechnical Indicators
Associated Executable Files
The following executable files are associated with Karo ransomware:
karo.exesvchost.exes.exe--sample (60).exe%virCryptoBubble_ransomware_Italyt.exe3.exe
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About This Analysis
This Karo 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 Karo.
Last updated: July 30, 2025