Ransomware Research

Executioner Ransomware

Executioner is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on June 1, 2017, this ransomware has been actively targeting systems worldwide.

Quick Facts

Ransomware Family
Executioner
First Seen
June 1, 2017

How Executioner Ransomware Works

File Encryption Patterns

Executioner modifies encrypted files using specific patterns to mark them as encrypted:

File extensions added after encryption:

./\.[a-z0-9]{6}$/

Ransom Note and Payment Demands

After encrypting files, Executioner displays ransom notes demanding payment for file recovery:

fileSifre_Coz_Talimat.html

Ransom message:

notes/Sifre_Coz_Talimat.html

Note locations:

EveryFolder
screenshot

Ransom message:

notes/f2lnJK9.jpg

Note locations:

Desktop

Technical Indicators

Associated Executable Files

The following executable files are associated with Executioner ransomware:

  • Executioner.exe
  • New heykLog.exe
  • oqycbr.exe
  • CYBERf7e44da9e0dab4bb497cd83383a7128efdfbf96cdbb3886720fc3e081128a776.EXE

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About This Analysis

This Executioner 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 Executioner.

Last updated: October 30, 2025

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