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
How Locky-Osiris 2017 ransomware works
File encryption patterns
Locky-Osiris 2017 modifies encrypted files using specific patterns to mark them as encrypted:
Ransom note and payment demands
After encrypting files, Locky-Osiris 2017 displays ransom notes demanding payment for file recovery:
notes/OSIRIS-b90e.htm
notes/DesktopOSIRIS.bmp
Technical indicators
Associated executable files
The following executable files are associated with Locky-Osiris 2017 ransomware:
- comss test encoder type-1 (66).exe
- redchip2.exe
- REDCHIP2.EXE
- redchip2.exe.3172.dr
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, helping organizations defend against and recover from ransomware attacks like Locky-Osiris 2017.
Last updated: December 30, 2025
Elastio detects Locky-Osiris 2017 inside your data and backups.
The Hunt Engine uses Deep File Inspection to identify Locky-Osiris 2017 across live data, replicated data, and backups. If this family is in your environment, Elastio finds it before encryption completes. Run a scan against your recovery points to confirm.
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