Ransomware Research

Anonymous Ransomware

Anonymous is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on February 1, 2023, this ransomware has been actively targeting systems worldwide.

Quick Facts

Ransomware Family
Anonymous
First Seen
February 1, 2023

How Anonymous Ransomware Works

File Encryption Patterns

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

File extensions added after encryption:

./\.[a-z0-9]{4}$/

Ransom Note and Payment Demands

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

filefor dencrypt

Ransom message:

notes/for dencrypt

Note locations:

EveryFolder
screenshot

Ransom message:

notes/

Note locations:

Desktop

Technical Indicators

Associated Executable Files

The following executable files are associated with Anonymous ransomware:

  • Gta v online.exe
  • svchost.exe

Elastio Can Help You

Don't let Anonymous ransomware take over your data

Elastio provides advanced ransomware protection and recovery solutions to keep your organization safe.

About This Analysis

This Anonymous 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 Anonymous.

Last updated: July 30, 2025