Overview

overview

10

Static

static

10

MasonClient.exe

windows10-2004-x64

10

MasonClient.exe

windows11-ltsc_2024-x64

10

Sharing

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General

  • Target
    MasonClient.exe
  • Size 42KB
  • Sample260910-smrn7stwd1
  • SHA256 451bfcaf2e22279d916694aa3431a8a3026a77e85a05cf638fc65efc3b832542
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
neptuneratexecutionpersistencetrojan

Malware Config

Extracted

Family

  • neptunerat

C2

  • p8mfbrn1en.localto.net:8521

Attributes
  • filename

    USB.exe

  • group

    MasonGroup

  • key

    GSwY2HRcDK62KUc4

  • rat_name

    MasonRAT

Targets

    • Target
      MasonClient.exe
    • Size 42KB
    • SHA256 451bfcaf2e22279d916694aa3431a8a3026a77e85a05cf638fc65efc3b832542
    • 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

    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Tasks