Ransomware Research
MadiLock Ransomware
MadiLock 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
- MadiLock
- First Seen
- June 1, 2025
How MadiLock Ransomware Works
File Encryption Patterns
MadiLock modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..MadiLockRansom Note and Payment Demands
After encrypting files, MadiLock displays ransom notes demanding payment for file recovery:
README_TO_RECOVER_FILES!!!.txtRansom message:
notes/README_TO_RECOVER_FILES!!!.txt
Note locations:
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About This Analysis
This MadiLock 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 MadiLock.
Last updated: September 30, 2025
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