Analysis

  • user interaction
    yes
  • max time kernel
    8s
  • max time network
    10s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260911-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260911-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    22/09/2026, 16:38

General

  • Target
    MasonRAT.exe
  • Size 17.3MB
  • Sample260922-t5gsdsaf48
  • SHA256 584bd9132b7dfa8e0026d75b4ab8b6ab0e3791badcb812fe7ba3dd6d68da5454
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Family: NeptuneRAT, MasonRAT

    NeptuneRAT aka MasonRAT is a trojan written in C#.

  • Detects NeptuneRAT stealer 1 IoCs
  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

Processes

  • C:\Users\Admin\AppData\Local\Temp\MasonRAT.exe
    "C:\Users\Admin\AppData\Local\Temp\MasonRAT.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    PID:6040
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 6040 -s 1176
      2⤵
      • Program crash
      PID:5548
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 6040 -ip 6040
    1⤵
      PID:5320

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          memory/6040-0-0x0000000000B00000-0x0000000001C4C000-memory.dmp

          memory/6040-1-0x0000000006C80000-0x0000000007224000-memory.dmp

          memory/6040-2-0x00000000066D0000-0x0000000006762000-memory.dmp

          memory/6040-3-0x0000000006770000-0x000000000680C000-memory.dmp

          memory/6040-5-0x0000000006950000-0x0000000006960000-memory.dmp