Ransomware Research
L3MON Ransomware
L3MON is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on June 1, 2024, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- L3MON
- First Seen
- June 1, 2024
How L3MON Ransomware Works
File Encryption Patterns
L3MON modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
./\.[a-z0-9]{4}$/Ransom Note and Payment Demands
After encrypting files, L3MON displays ransom notes demanding payment for file recovery:
DecryptFiles.txtRansom message:
notes/DecryptFiles.txt
Note locations:
EveryFolderRansom message:
notes/nlee4tce3.jpg
Note locations:
DesktopTechnical Indicators
Associated Executable Files
The following executable files are associated with L3MON ransomware:
AnyDesk.exe
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About This Analysis
This L3MON 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 L3MON.
Last updated: July 30, 2025