Overview

overview

10

Static

static

10

MasonClient mneef.exe

windows10-2004-x64

10

MasonClient mneef.exe

windows10-ltsc_2021-x64

10

MasonClient mneef.exe

windows11-21h2-x64

10

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General

  • Target
    MasonClient mneef.exe
  • Size 48KB
  • Sample260731-2ldkmaaj4z
  • SHA256 ab6de8288d1bd35eee4f66a827c6be993ddd6db7a46b8c61a132cf2595cd2202
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
neptuneratexecutionpersistencetrojan

Malware Config

Extracted

Family

  • neptunerat

Attributes
  • filename

    MasonUSB.exe

  • group

    MasonGroup

  • key

    FD7QqUt10fXLOruf

  • localhost

    127.0.0.1:1417

  • rat_name

    MasonRAT

Targets

    • Target
      MasonClient mneef.exe
    • Size 48KB
    • SHA256 ab6de8288d1bd35eee4f66a827c6be993ddd6db7a46b8c61a132cf2595cd2202
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    executionneptuneratpersistencetrojan

    • Detects NeptuneRAT stealer

    • Family: NeptuneRAT, MasonRAT

      NeptuneRAT aka MasonRAT is a trojan written in C#.

      trojanneptunerat

    • Checks computer location settings

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

    • Executes dropped EXE

    behavioral1behavioral2behavioral3

MITRE ATT&CK Enterprise v16

Tasks