Ransomware Research
DarkLulz Ransomware
DarkLulz is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on June 1, 2025, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- DarkLulz
- First Seen
- June 1, 2025
How DarkLulz Ransomware Works
File Encryption Patterns
DarkLulz modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..DarkLulzRansom Note and Payment Demands
After encrypting files, DarkLulz displays ransom notes demanding payment for file recovery:
/README_\d{1,2}\.txt/Ransom message:
notes/README_1.txt
Note locations:
DesktopTechnical Indicators
Associated Executable Files
The following executable files are associated with DarkLulz ransomware:
rtestandroid.exe
Elastio Can Help You
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About This Analysis
This DarkLulz 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 DarkLulz.
Last updated: September 30, 2025
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