Overview

overview

10

Static

static

10

MasonClient.exe

windows10-ltsc_2021-x64

10

MasonClient.exe

windows11-21h2-x64

10

Sharing

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General

  • Target
    MasonClient.exe
  • Size 48KB
  • Sample260628-m8g41agy5p
  • SHA256 59adce9270031263cf45f7a7f306a6125d7c070ed53c3ceb0374b2b9188639d7
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
neptuneratpersistencetrojan

Malware Config

Extracted

Family

  • neptunerat

C2

  • bore.pub:32177

Targets

    • Target
      MasonClient.exe
    • Size 48KB
    • SHA256 59adce9270031263cf45f7a7f306a6125d7c070ed53c3ceb0374b2b9188639d7
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    neptuneratpersistencetrojan

    • 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.

    • Modifies system executable filetype association

      persistence
    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Tasks