Overview

overview

10

Static

static

10

h.exe

windows10-2004-x64

h.exe

windows11-ltsc_2024-x64

Sharing

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General

  • Target
    h.exe
  • Size 49KB
  • Sample261102-ryctracy7r
  • SHA256 0a2f081624e5ae07cbeb9fae26fc4d5b2c91bab877df9536f85f27fa9c9b8144
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
neptuneratbootkitdefense_evasiondiscoveryexecutionpersistencetrojan

Malware Config

Extracted

Family

  • neptunerat

C2

  • wsdw-38977.portmap.host:38977

Attributes
  • filename

    USB.exe

  • group

    MasonGroup

  • key

    czvLC18PnYQtPnfL

  • rat_name

    MasonRAT

Targets

    • Target
      h.exe
    • Size 49KB
    • SHA256 0a2f081624e5ae07cbeb9fae26fc4d5b2c91bab877df9536f85f27fa9c9b8144
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    bootkitdefense_evasiondiscoveryexecutionneptuneratpersistencetrojan

    • Detects NeptuneRAT stealer

    • Family: NeptuneRAT, MasonRAT

      NeptuneRAT aka MasonRAT is a trojan written in C#.

      trojanneptunerat

    • Disables Task Manager via registry modification

      defense_evasion

    • 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.

    • Writes to the Master Boot Record (MBR)

      Bootkits write to the MBR to gain persistence at a level below the operating system.

      bootkitpersistence

    • Drops file in System32 directory

    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Tasks