Ransomware Research

RagnarLocker Ransomware

RagnarLocker is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on February 1, 2020, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: RagnarLocker 2.0, RagnarLocker Doxware, RagnarLocker NextGen.

Quick Facts

Ransomware Family
RagnarLocker
First Seen
February 1, 2020
Known Aliases
RagnarLocker 2.0RagnarLocker DoxwareRagnarLocker NextGen

How RagnarLocker Ransomware Works

Targeted Files

Encrypts first 1Mb

File Encryption Patterns

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

File extensions added after encryption:

./\.ragnar_[A-F0-9]{8}$/./\.__r4gN4r__[A-F0-9]{8}$/

Ransom Note and Payment Demands

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

file/^RGNR_[A-F0-9]{8}\.txt$/

Ransom message:

notes/RGNR_B9355F59.txt

Note locations:

EveryFolder
file/^!!!_READ_ME_[A-F0-9]{8}_!!!\.txt$/

Ransom message:

notes/!!!_READ_ME_623A4A83_!!!.txt

Note locations:

EveryFolder

Technical Indicators

Associated Executable Files

The following executable files are associated with RagnarLocker ransomware:

  • uu94ctvp4f6TPpgoPS.exe
  • o0j5mWgpcow7k2uQj05egTmZsPm.exe
  • delq99j61FkgZTWpMioun7.exe
  • VSERV.EXE
  • malware.exe
  • ransom1.eexe
  • Ezb6GQGXGXYUaFY.exe
  • Ragnar.exe
  • true.bin
  • 9yeblsbyyEUb7wRn1.exe
  • FRSQK5LCWFef60L.exe
  • VSD.EXE
  • 001200000005379C_winscp.exe_sample.exe
  • Sofreg.exe
  • CWT_company_ragnar_locker.exe
  • ragnar.exe
  • ragnarlocker.exe
  • sasas.bin.exe

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About This Analysis

This RagnarLocker 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 RagnarLocker.

Last updated: July 30, 2025

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