Ransomware Research

Deep Ransomware

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

Quick Facts

Ransomware Family
Deep
First Seen
September 1, 2023

How Deep Ransomware Works

Targeted Files

Full extension -> .id[C63F241F-3352].[captain-america@tuta.io].deep

File Encryption Patterns

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

File extensions added after encryption:

..deep

Ransom Note and Payment Demands

After encrypting files, Deep 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 Deep ransomware:

  • svchost.exe

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About This Analysis

This Deep 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 Deep.

Last updated: July 30, 2025

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