Ransomware Research

DarkMystic Ransomware

DarkMystic is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on April 1, 2025, this ransomware has been actively targeting systems worldwide.

Quick Facts

Ransomware Family
DarkMystic
First Seen
April 1, 2025

How DarkMystic Ransomware Works

File Encryption Patterns

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

File extensions added after encryption:

..darkmystic

Prefixes added to encrypted files:

[darkmystic@onionmail.com]

Ransom Note and Payment Demands

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

fileRestore-My-Files.txt

Ransom message:

notes/Restore-My-Files.txt

Note locations:

EveryFolder
fileinfo.hta

Ransom message:

notes/info.hta

Note locations:

RootDiscsDesktop
screenshot

Ransom message:

notes/j5g1ense.png

Note locations:

Desktop

Technical Indicators

Associated Executable Files

The following executable files are associated with DarkMystic ransomware:

  • svchost.exe
  • winlogon.exe

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About This Analysis

This DarkMystic 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 DarkMystic.

Last updated: October 30, 2025

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