Overview

overview

10

Static

static

3

MasonClient.exe

windows10-2004-x64

10

MasonClient.exe

windows11-ltsc_2024-x64

10

Sharing

Copy URL Twitter E-mail

General

  • Target
    MasonClient.exe
  • Size 87KB
  • Sample260730-gpkswscg52
  • SHA256 d68cef094b57d504acecdde26bca8276bb5552a7da481b3b55a03d08cda68725
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
donutloaderneptuneratdiscoveryexecutionloaderpersistencetrojan

Malware Config

Targets

    • Target
      MasonClient.exe
    • Size 87KB
    • SHA256 d68cef094b57d504acecdde26bca8276bb5552a7da481b3b55a03d08cda68725
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    discoverydonutloaderneptuneratloadertrojanexecutionpersistence

    • Detects DonutLoader

      loader

    • Detects NeptuneRAT stealer

    • Family: DonutLoader

      DonutLoader is a position-independent code that enables in-memory execution of VBScript, JScript, EXE, DLL files and dotNET assemblies.

      loaderdonutloader

    • Family: NeptuneRAT, MasonRAT

      NeptuneRAT aka MasonRAT is a trojan written in C#.

      trojanneptunerat

    • 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.

      discovery
    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Tasks