Ransomware Research
Locky-Osiris 2017 Ransomware
Locky-Osiris 2017 is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on April 1, 2017, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- Locky-Osiris 2017
- First Seen
- April 1, 2017
How Locky-Osiris 2017 Ransomware Works
File Encryption Patterns
Locky-Osiris 2017 modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..osirisRansom Note and Payment Demands
After encrypting files, Locky-Osiris 2017 displays ransom notes demanding payment for file recovery:
/^OSIRIS-[a-f0-9]{4}\.htm$/Ransom message:
notes/OSIRIS-b90e.htm
Note locations:
EveryFolderRansom message:
notes/DesktopOSIRIS.bmp
Note locations:
DesktopTechnical Indicators
Associated Executable Files
The following executable files are associated with Locky-Osiris 2017 ransomware:
comss test encoder type-1 (66).exeredchip2.exeREDCHIP2.EXEredchip2.exe.3172.dr
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About This Analysis
This Locky-Osiris 2017 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 Locky-Osiris 2017.
Last updated: July 30, 2025