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

Sharing

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General

  • Target
    MasonClient.exe
  • Size 52KB
  • Sample261011-vch1estyfs
  • SHA256 321efc518de0ef20b1e5be7ad034f13a3d874b1a960857cd653addaaa91df3cd
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
neptuneratdiscoverytrojan

Malware Config

Extracted

Family

  • neptunerat

C2

  • 193.161.193.99:45108

Attributes
  • filename

    USB.exe

  • group

    MasonGroup

  • key

    LvIlblgIkQ048S8u

  • rat_name

    MasonRAT

Targets

    • Target
      MasonClient.exe
    • Size 52KB
    • SHA256 321efc518de0ef20b1e5be7ad034f13a3d874b1a960857cd653addaaa91df3cd
    • 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

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

      discovery
    behavioral1behavioral2behavioral3

MITRE ATT&CK Enterprise v16

Tasks