Ransomware Research
Comrade Circle Ransomware
Comrade Circle is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on January 1, 2017, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- Comrade Circle
- First Seen
- January 1, 2017
How Comrade Circle Ransomware Works
Targeted Files
Encodes filenames with base-64 Encrypts first 0x20000 bytes
File Encryption Patterns
Comrade Circle modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..comrade..encrypted4Ransom Note and Payment Demands
After encrypting files, Comrade Circle displays ransom notes demanding payment for file recovery:
/^RESTORE-FILES![0-9]{18}\.hta$/Ransom message:
notes/RESTORE-FILES!638231258925329485.hta
Note locations:
EveryFolder/^RESTORE-FILES![0-9]{18}\.txt$/Ransom message:
notes/RESTORE-FILES!638232010831454867.txt
Note locations:
EveryFolderRansom message:
notes/638231259243768190.jpg
Note locations:
DesktopTechnical Indicators
Associated Executable Files
The following executable files are associated with Comrade Circle ransomware:
App.exeAppv9valll.exeversion2kb0001.exe4 ran.exewrar550.exeVERSION2KB0001.EXE
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About This Analysis
This Comrade Circle 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 Comrade Circle.
Last updated: July 30, 2025