Ransomware Research
ArmaLocky Ransomware
ArmaLocky is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on September 1, 2017, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- ArmaLocky
- First Seen
- September 1, 2017
How ArmaLocky Ransomware Works
File Encryption Patterns
ArmaLocky modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..armadilo1Ransom Note and Payment Demands
After encrypting files, ArmaLocky displays ransom notes demanding payment for file recovery:
_Locky_HELP_.htmlRansom message:
notes/_Locky_HELP_.html.txt
_ReadMe_.txtTechnical Indicators
Associated Executable Files
The following executable files are associated with ArmaLocky ransomware:
MlsoSvc.exe
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About This Analysis
This ArmaLocky 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 ArmaLocky.
Last updated: July 30, 2025