Overview

overview

10

Static

static

3

XWORMexe.exe

windows10-ltsc_2021-x64

10

XWORMexe.exe

windows11-ltsc_2024-x64

10

Analysis

  • user interaction
    yes
  • max time kernel
    141s
  • max time network
    140s
  • platform
    windows10-ltsc_2021_x64
  • resource
    win10ltsc2021-20260911-en
  • resource tags

    arch:x64arch:x86image:win10ltsc2021-20260911-enlocale:en-usos:windows10-ltsc_2021-x64systemwindows
  • submitted
    12/09/2026, 23:50

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General

  • Target
    XWORMexe.exe
  • Size 18.5MB
  • Sample260912-3v18qahm21
  • SHA256 2b0eb7f9245b4504bfa55c6244b88c6f93135c24c643c854949ac264b5a07f1c
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
executionneptuneratpersistencetrojan

Malware Config

Extracted

Family

  • neptunerat

C2

  • 143.14.44.98:505

Attributes
  • filename

    MasonUSB.exe

  • group

    MasonGroup

  • key

    COVAVOXmu2BHXK0c

  • rat_name

    MasonRAT

Signatures

  • Family: NeptuneRAT, MasonRAT

    NeptuneRAT aka MasonRAT is a trojan written in C#.

    trojanneptunerat
  • Detects NeptuneRAT stealer 2 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 4 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Modifies registry class 2 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

    persistenceexecution
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

    persistence

Processes

  • C:\Users\Admin\AppData\Local\Temp\XWORMexe.exe
    "C:\Users\Admin\AppData\Local\Temp\XWORMexe.exe"
    1⤵
    • Checks computer location settings
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:4720
    • C:\Users\Admin\AppData\Local\Temp\Mason13DClient.exe
      "C:\Users\Admin\AppData\Local\Temp\Mason13DClient.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:908
      • C:\Windows\System32\schtasks.exe
        "C:\Windows\System32\schtasks.exe" /create /f /sc minute /mo 1 /tn "Mason13DClient" /tr "C:\Users\Admin\AppData\Roaming\Mason13DClient.exe"
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:4304
  • C:\Windows\system32\OpenWith.exe
    C:\Windows\system32\OpenWith.exe -Embedding
    1⤵
    • Modifies registry class
    • Suspicious use of SetWindowsHookEx
    PID:4136
  • C:\Users\Admin\AppData\Roaming\Mason13DClient.exe
    C:\Users\Admin\AppData\Roaming\Mason13DClient.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:5340
  • C:\Users\Admin\AppData\Roaming\Mason13DClient.exe
    "C:\Users\Admin\AppData\Roaming\Mason13DClient.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:4308
  • C:\Users\Admin\AppData\Roaming\Mason13DClient.exe
    "C:\Users\Admin\AppData\Roaming\Mason13DClient.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:3156

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        Mason13DClient.exe.log
        • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\Mason13DClient.exe.log
        • Size 654B
        • SHA256 d39a78fabca39532fcb85ce908781a75132e1bd01cc50a3b290dd87127837d63
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        Mason13DClient.exe
        • Path C:\Users\Admin\AppData\Local\Temp\Mason13DClient.exe
        • Size 48KB
        • SHA256 8eb3378d0db4a68a93a55af1ebb979ae67bcfcb87cd19387856faf071c2d1111
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        XWorm V5.6 (1).7z
        • Path C:\Users\Admin\AppData\Local\Temp\XWorm V5.6 (1).7z
        • Size 18.5MB
        • SHA256 7c431981e1962c71f936fc53951982071462f853f53c92dc3d4103ee5e3efe70
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        memory/908-15-0x0000000000DA0000-0x0000000000DB2000-memory.dmp
        Download

        memory/908-21-0x000000001B950000-0x000000001B960000-memory.dmp
        Download

        memory/4720-0-0x0000000000350000-0x00000000015DE000-memory.dmp
        Download