Overview

overview

10

Static

static

10

MasonClient.exe

windows10-2004-x64

10

MasonClient.exe

windows10-ltsc_2021-x64

10

MasonClient.exe

windows11-21h2-x64

10

MasonClient.exe

windows11-ltsc_2024-x64

10

Analysis

  • max time kernel
    149s
  • max time network
    141s
  • platform
    windows10-ltsc_2021_x64
  • resource
    win10ltsc2021-20260911-en
  • resource tags

    arch:x64arch:x86image:win10ltsc2021-20260911-enlocale:en-usos:windows10-ltsc_2021-x64systemwindows
  • submitted
    15/10/2026, 11:21

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General

  • Target
    MasonClient.exe
  • Size 43KB
  • Sample261015-ngc7eahx5p
  • SHA256 d7d22dcd1e143962faf1341d521257c17673d9de3836d824887d7ee5ac52b1b5
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
neptunerattrojan

Malware Config

Extracted

Family

  • neptunerat

C2

  • 31.tcp.cpolar.top:14447

Attributes
  • filename

    USB.exe

  • group

    MasonGroup

  • key

    XAlag5TMDPSHbnuv

  • rat_name

    MasonRAT

Signatures

  • Family: NeptuneRAT, MasonRAT

    NeptuneRAT aka MasonRAT is a trojan written in C#.

    trojanneptunerat
  • Detects NeptuneRAT stealer 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\MasonClient.exe
    "C:\Users\Admin\AppData\Local\Temp\MasonClient.exe"
    1⤵
      PID:3224

    Network

          MITRE ATT&CK Matrix

          Replay Monitor

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          Downloads

          memory/3224-0-0x0000000000B20000-0x0000000000B32000-memory.dmp
          Download