Ransomware Research

Blackoutware Ransomware

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

Quick Facts

Ransomware Family
Blackoutware
First Seen
November 1, 2023

How Blackoutware Ransomware Works

File Encryption Patterns

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

File extensions added after encryption:

..blo

Ransom Note and Payment Demands

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

file!!!WARNING!!!.txt

Ransom message:

notes/!!!WARNING!!!.txt

Note locations:

UserProfile

Technical Indicators

Associated Executable Files

The following executable files are associated with Blackoutware ransomware:

  • BlackoutWare_MaaS.exe
  • cf.exe

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About This Analysis

This Blackoutware 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 Blackoutware.

Last updated: October 30, 2025

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