Ransomware Research

MauriGo Ransomware

MauriGo is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on March 1, 2018, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: MauriEncoder.

Quick Facts

Ransomware Family
MauriGo
First Seen
March 1, 2018
Known Aliases
MauriEncoder

How MauriGo Ransomware Works

Targeted Files

2fa1c427367e670d8d8f8022fdb39737b7a6edcd419a77c80583625ff503fc28 -> Encodes filenames with base64

File Encryption Patterns

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

File extensions added after encryption:

..encrypted

Ransom Note and Payment Demands

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

fileREAD_TO_DECRYPT.txt

Ransom message:

notes/READ_TO_DECRYPT.txt
fileREADME.html

Ransom message:

notes/README.html

Note locations:

Desktop

Technical Indicators

Associated Executable Files

The following executable files are associated with MauriGo ransomware:

  • E1F9.ps1
  • xmrig.rar
  • wininiv.exe
  • Encoder.exe
  • sm.exe
  • ransomware.exe

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About This Analysis

This MauriGo 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 MauriGo.

Last updated: July 30, 2025

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