Ransomware Research

BlackRock Ransomware

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

Quick Facts

Ransomware Family
BlackRock
First Seen
May 1, 2023

How BlackRock Ransomware Works

Targeted Files

Full extension -> .id[C63F241F-2803].[icanrestore@onionmail.org].blackrock

File Encryption Patterns

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

File extensions added after encryption:

..blackrock

Ransom Note and Payment Demands

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

fileinfo.txt

Ransom message:

notes/info.txt

Note locations:

RootDiscsDesktop
fileinfo.hta

Ransom message:

notes/info.hta

Note locations:

RootDiscsDesktop

Technical Indicators

Associated Executable Files

The following executable files are associated with BlackRock ransomware:

  • software.exe

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About This Analysis

This BlackRock 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 BlackRock.

Last updated: July 30, 2025

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