Ransomware Research

Annabelle Ransomware

Annabelle is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on February 1, 2018, this ransomware has been actively targeting systems worldwide.

Quick Facts

Ransomware Family
Annabelle
First Seen
February 1, 2018

How Annabelle Ransomware Works

Targeted Files

Replaces MBR after countdown

File Encryption Patterns

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

File extensions added after encryption:

..ANNABELLE

Ransom Note and Payment Demands

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

message

Ransom message:

notes/note.txt

Note locations:

OnceOnCompletion

Technical Indicators

Associated Executable Files

The following executable files are associated with Annabelle ransomware:

  • nbnbnbnbnbnb
  • Vichingo455@Annabelle.exe
  • Annabelle.exe
  • Annabelle_ransom.exe
  • MrsMajor4.0.exe
  • Trojan-Ransom.Annabelle.exe
  • Trojan.Ransom.Annabelle.exe
  • 716335ba5cd1e7186c40295b199190e2b6655e48f1c1cbe12139ba67faa5e1ac_2.exe
  • Ransomware Annabelle.exe
  • install_C#.exe
  • nbnbnbnbnbnb.exe
  • annabelle.exe
  • ImLegend.exe
  • Annabelle.bin

Recovery and Decryption Tools

Good news! Decryption tools are available for Annabelle ransomware:

0

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About This Analysis

This Annabelle 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 Annabelle.

Last updated: July 30, 2025

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