Ransomware Research

Mono Ransomware

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

Quick Facts

Ransomware Family
Mono
First Seen
June 1, 2023

How Mono Ransomware Works

File Encryption Patterns

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

File extensions added after encryption:

..mono

Ransom Note and Payment Demands

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

fileinfo.txt and

Ransom message:

notes/info.txt

Note locations:

DesktopRootDiscs
fileInfo.hta

Ransom message:

notes/Info.hta

Note locations:

StartUp

Technical Indicators

Associated Executable Files

The following executable files are associated with Mono ransomware:

  • 7719e02e7e9dd9.exe
  • winhost.exe

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About This Analysis

This Mono 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 Mono.

Last updated: July 30, 2025

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