Ransomware Research

Locky-Odin Ransomware

Locky-Odin is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on September 1, 2016, this ransomware has been actively targeting systems worldwide.

Quick Facts

Ransomware Family
Locky-Odin
First Seen
September 1, 2016

How Locky-Odin Ransomware Works

File Encryption Patterns

Locky-Odin modifies encrypted files using specific patterns to mark them as encrypted:

File extensions added after encryption:

..odin

Ransom Note and Payment Demands

After encrypting files, Locky-Odin displays ransom notes demanding payment for file recovery:

file_HOWDO_text.html

Ransom message:

notes/_HOWDO_text.html

Note locations:

Desktop
file/^_\d+_HOWDO_text\.html\b/

Ransom message:

notes/_HOWDO_text.html

Note locations:

EveryFolder
screenshot

Ransom message:

notes/_HOWDO_text.bmp

Note locations:

Desktop

Technical Indicators

Associated Executable Files

The following executable files are associated with Locky-Odin ransomware:

  • PYLPK3401.wsf
  • DEVRTL.dll
  • DEVRTL.DLL
  • downloaded-Locky-xXINzimwQ1.dll
  • 2016-09-26-1804-UTC-downloaded-Locky-xXINzimwQ1.dll
  • Odin.dll.bin
  • AaVTOxeiUCD1.dll
  • aWPNFxFal2.dll.3848.dr
  • xXINzimwQ1.dll
  • JlJaGufd1.dropped.dll.bin
  • RHVFJTq1.dllDISABLEDLOCKY
  • meknyODFgl3_dll
  • meknyODFgl3.dll
  • YeVTqThNiU2.dll.3868.dr
  • hfHdEl2.dll
  • yiuHWTuA1.dll
  • JlJaGufd1.dll

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About This Analysis

This Locky-Odin 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-Odin.

Last updated: October 30, 2025

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