Ransomware Research
KeyMaker Ransomware
KeyMaker is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on August 1, 2017, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- KeyMaker
- First Seen
- August 1, 2017
How KeyMaker Ransomware Works
Targeted Files
Requires C&C to send encryption key
File Encryption Patterns
KeyMaker modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..CryptedOppsRansom Note and Payment Demands
After encrypting files, KeyMaker displays ransom notes demanding payment for file recovery:
READ_IT.txtRansom message:
notes/READ_IT.txt
Note locations:
DesktopTechnical Indicators
Associated Executable Files
The following executable files are associated with KeyMaker ransomware:
KeyMaker.exe
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About This Analysis
This KeyMaker 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 KeyMaker.
Last updated: July 30, 2025