Overview

overview

10

Static

static

3

MasonC1111lient.exe

windows10-2004-x64

10

MasonC1111lient.exe

windows10-ltsc_2021-x64

10

MasonC1111lient.exe

windows11-21h2-x64

Sharing

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General

  • Target
    MasonC1111lient.exe
  • Size 87KB
  • Sample260310-eca2tads7n
  • SHA256 83fa17e95a71b60bdc40ed8264fffad19681a12180c806e5d5aece4a8231c3cb
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
donutloaderneptuneratexecutionloaderpersistencetrojan

Malware Config

Extracted

Family

  • neptunerat

C2

  • dodyjarah-64527.portmap.host:64527

Targets

    • Target
      MasonC1111lient.exe
    • Size 87KB
    • SHA256 83fa17e95a71b60bdc40ed8264fffad19681a12180c806e5d5aece4a8231c3cb
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    donutloaderneptuneratloadertrojanexecutionpersistence

    • Detects DonutLoader

      loader

    • Detects NeptuneRAT stealer

    • DonutLoader

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

      loaderdonutloader

    • Donutloader family

      donutloader

    • NeptuneRAT, MasonRAT

      NeptuneRAT aka MasonRAT is a trojan written in C#.

      trojanneptunerat

    • Neptunerat family

      neptunerat

    • 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.

    behavioral1behavioral2behavioral3

MITRE ATT&CK Enterprise v16

Tasks