Ransomware Research
Locked9 Ransomware
Locked9 is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on March 1, 2024, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- Locked9
- First Seen
- March 1, 2024
How Locked9 Ransomware Works
File Encryption Patterns
Locked9 modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..locked9Ransom Note and Payment Demands
After encrypting files, Locked9 displays ransom notes demanding payment for file recovery:
How_to_back_files.htmlRansom message:
notes/How_to_back_files.html
Note locations:
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About This Analysis
This Locked9 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 Locked9.
Last updated: July 30, 2025