Ransomware Research

OXAR Ransomware

OXAR is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on July 1, 2017, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: Kappa.

Quick Facts

Ransomware Family
OXAR
First Seen
July 1, 2017
Known Aliases
Kappa

How OXAR Ransomware Works

Targeted Files

https://app.any.run/tasks/f33e157d-447a-4b5b-a61d-70b9c9085601

File Encryption Patterns

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

File extensions added after encryption:

..OXR..PEDO..ULOZ..FUCK..FDP

Ransom Note and Payment Demands

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

fileinstructions.txt

Ransom message:

notes/instructions.txt

Note locations:

Desktop
file1 What happens with my files.txt

Ransom message:

notes/1 What happens with my files.txt

Note locations:

EveryFolder
message

Ransom message:

notes/note.txt

Note locations:

OnceOnCompletion
message

Ransom message:

notes/note1.txt

Note locations:

Login
screenshot

Ransom message:

notes/wallpaper.bmp

Note locations:

Desktop

Technical Indicators

Associated Executable Files

The following executable files are associated with OXAR ransomware:

  • Data Locker.exe
  • LockedIn.bin
  • LockedIn.exe
  • rbgfdvcx.exe
  • PEDO.exe
  • Cryptear.exe
  • ras.exe
  • Ableton-live-Suite-v95-WiN-x86-x64.exe
  • ransomware.exe
  • Kappa Ransomware.exe
  • Ableton-live-Suite-v95-WiN-x86-x64.exe (ras.exe)

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About This Analysis

This OXAR 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 OXAR.

Last updated: July 30, 2025

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