Overview

overview

10

Static

static

10

MasosnClient.exe

windows10-ltsc_2021-x64

10

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General

  • Target
    MasosnClient.exe
  • Size 49KB
  • Sample260718-hr7wwabv4m
  • SHA256 f6fc76f47e5ac1ea1abd9ba9b8f826e54ab2ee402b7d4f2a87eb779b5984d9b2
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
neptuneratdiscoverytrojan

Malware Config

Extracted

Family

  • neptunerat

C2

  • 30.tcp.cpolar.top:12558

Attributes
  • filename

    USB.exe

  • group

    MasonGroup

  • key

    USmFoVvVsJx5YJiH

  • rat_name

    MasonRAT

Targets

    • Target
      MasosnClient.exe
    • Size 49KB
    • SHA256 f6fc76f47e5ac1ea1abd9ba9b8f826e54ab2ee402b7d4f2a87eb779b5984d9b2
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    discoveryneptunerattrojan

    • 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

    • Contacts third-party web service commonly abused for C2

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

    behavioral1

MITRE ATT&CK Enterprise v16

Tasks