Ransomware Research
Keylock Ransomware
Keylock is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on October 1, 2023, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- Keylock
- First Seen
- October 1, 2023
How Keylock Ransomware Works
File Encryption Patterns
Keylock modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..keylockRansom Note and Payment Demands
After encrypting files, Keylock displays ransom notes demanding payment for file recovery:
/^README-id-.+\.txt$/Ransom message:
notes/README-id-DESKTOP-XXXXXB1.txt
Ransom message:
notes/y0CB189RO.jpg
Note locations:
DesktopTechnical Indicators
Associated Executable Files
The following executable files are associated with Keylock ransomware:
net.exerundll32.exe
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About This Analysis
This Keylock 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 Keylock.
Last updated: July 30, 2025