Locky-Ykcol Ransomware
Locky-Ykcol 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
How Locky-Ykcol ransomware works
File encryption patterns
Locky-Ykcol modifies encrypted files using specific patterns to mark them as encrypted:
Ransom note and payment demands
After encrypting files, Locky-Ykcol displays ransom notes demanding payment for file recovery:
notes/ykcol.htm
notes/ykcol.bmp
Technical indicators
Associated executable files
The following executable files are associated with Locky-Ykcol ransomware:
- txdOsXP.exe
- CJgBjTI.exe
- 2_.exe
- rcCzyIyrUzw.exe
- 87thiuh3gfDGS
- Ly.exe
- 11326216544.vbs
About this analysis
This Locky-Ykcol 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-Ykcol.
Last updated: December 30, 2025
Elastio detects Locky-Ykcol inside your data and backups.
The Hunt Engine uses Deep File Inspection to identify Locky-Ykcol 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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