Overview

overview

8

Static

static

3

MasonClient.exe

windows10-2004-x64

8

MasonClient.exe

windows11-21h2-x64

6

Sharing

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General

  • Target
    MasonClient.exe
  • Size 44KB
  • Sample260510-vglbcabz5s
  • SHA256 0c1ffbdc5e9004f75db30238424827aabdb4355b1ce59a57702dbaf7e825ae2d
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
8/10
executionpersistence

Malware Config

Targets

    • Target
      MasonClient.exe
    • Size 44KB
    • SHA256 0c1ffbdc5e9004f75db30238424827aabdb4355b1ce59a57702dbaf7e825ae2d
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    8/10
    executionpersistence

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

      execution

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Drops startup file

    • Executes dropped EXE

    • Adds Run key to start application

      persistence

    • Contacts third-party web service commonly abused for C2

      Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Tasks