Ransomware Research
MM Locker Ransomware
MM Locker is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on June 1, 2016, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- MM Locker
- First Seen
- June 1, 2016
How MM Locker Ransomware Works
File Encryption Patterns
MM Locker modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..lockedRansom Note and Payment Demands
After encrypting files, MM Locker displays ransom notes demanding payment for file recovery:
READ_IT.txtRansom message:
notes/READ_IT.txt
Note locations:
DesktopRansom message:
notes/wal-note.jpg
Note locations:
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About This Analysis
This MM Locker 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 MM Locker.
Last updated: October 30, 2025
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