Analysis

  • max time kernel
    900s
  • max time network
    896s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260911-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260911-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    01/10/2026, 15:01

General

  • Target
    arbuz.exe
  • Size 579KB
  • Sample261001-sd31watalc
  • SHA256 47530aea0d262967bc5ea92e4faeb18caafd66412cdf98af15267a405825afa4
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Event Triggered Execution: AppInit DLLs 1 TTPs

    Adversaries may establish persistence and/or elevate privileges by executing malicious content triggered by AppInit DLLs loaded into processes.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 18 IoCs
  • Loads dropped DLL 27 IoCs
  • Looks up external IP address via web service 1 TTPs 25 IoCs

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

  • Drops file in Windows directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Executes a command shell one-liner 1 TTPs 2 IoCs

    Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

  • Reads the TCP/IP host and domain name from the registry 1 TTPs 38 IoCs

    The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

  • Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

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

  • Suspicious use of AdjustPrivilegeToken 21 IoCs
  • Suspicious use of WriteProcessMemory 6 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.

Processes

  • C:\Users\Admin\AppData\Local\Temp\arbuz.exe
    "C:\Users\Admin\AppData\Local\Temp\arbuz.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Checks computer location settings
    • Drops file in Windows directory
    • Reads the TCP/IP host and domain name from the registry
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4460
    • C:\Windows\SYSTEM32\CMD.exe
      "CMD" netsh advfirewall firewall add rule name="k":E-sn)-:v`-]" dir=in action=allow program="C:\Windows\xdwdSystem32\Defender.exe" enable=yes & exit
      2⤵
        PID:1956
      • C:\Windows\SYSTEM32\cmd.exe
        "cmd" /c schtasks /create /f /sc minute /mo 1 /tn "Microsoft\Windows\WAppCrashNvTew" /tr "C:\Windows\xdwdSystem32\Defender.exe" /RL HIGHEST & exit
        2⤵
        • Executes a command shell one-liner
        • Suspicious use of WriteProcessMemory
        PID:3240
        • C:\Windows\system32\schtasks.exe
          schtasks /create /f /sc minute /mo 1 /tn "Microsoft\Windows\WAppCrashNvTew" /tr "C:\Windows\xdwdSystem32\Defender.exe" /RL HIGHEST
          3⤵
          • Scheduled Task/Job: Scheduled Task
          PID:3744
      • C:\Windows\SYSTEM32\cmd.exe
        "cmd" /c schtasks /create /f /sc minute /mo 30 /tn "Microsoft\MachineCore" /tr "C:\Windows\xdwdWeb\MalwareDef.exe" /RL HIGHEST & exit
        2⤵
        • Executes a command shell one-liner
        • Suspicious use of WriteProcessMemory
        PID:2320
        • C:\Windows\system32\schtasks.exe
          schtasks /create /f /sc minute /mo 30 /tn "Microsoft\MachineCore" /tr "C:\Windows\xdwdWeb\MalwareDef.exe" /RL HIGHEST
          3⤵
          • Scheduled Task/Job: Scheduled Task
          PID:3852
      • C:\Windows\xdwdSystem32\Defender.exe
        "C:\Windows\xdwdSystem32\Defender.exe"
        2⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Reads the TCP/IP host and domain name from the registry
        • Suspicious use of AdjustPrivilegeToken
        PID:4628
    • C:\Windows\xdwdWeb\MalwareDef.exe
      C:\Windows\xdwdWeb\MalwareDef.exe
      1⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Reads the TCP/IP host and domain name from the registry
      • Suspicious use of AdjustPrivilegeToken
      PID:2880
    • C:\Windows\xdwdSystem32\Defender.exe
      C:\Windows\xdwdSystem32\Defender.exe
      1⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Reads the TCP/IP host and domain name from the registry
      • Suspicious use of AdjustPrivilegeToken
      PID:1688
    • C:\Windows\xdwdSystem32\Defender.exe
      C:\Windows\xdwdSystem32\Defender.exe
      1⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Reads the TCP/IP host and domain name from the registry
      • Suspicious use of AdjustPrivilegeToken
      PID:2144
    • C:\Windows\xdwdSystem32\Defender.exe
      C:\Windows\xdwdSystem32\Defender.exe
      1⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Reads the TCP/IP host and domain name from the registry
      • Suspicious use of AdjustPrivilegeToken
      PID:4004
    • C:\Windows\xdwdSystem32\Defender.exe
      C:\Windows\xdwdSystem32\Defender.exe
      1⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Reads the TCP/IP host and domain name from the registry
      • Suspicious use of AdjustPrivilegeToken
      PID:2552
    • C:\Windows\xdwdSystem32\Defender.exe
      C:\Windows\xdwdSystem32\Defender.exe
      1⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Reads the TCP/IP host and domain name from the registry
      • Suspicious use of AdjustPrivilegeToken
      PID:872
    • C:\Windows\xdwdSystem32\Defender.exe
      C:\Windows\xdwdSystem32\Defender.exe
      1⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Reads the TCP/IP host and domain name from the registry
      • Suspicious use of AdjustPrivilegeToken
      PID:4960
    • C:\Windows\xdwdSystem32\Defender.exe
      C:\Windows\xdwdSystem32\Defender.exe
      1⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Reads the TCP/IP host and domain name from the registry
      • Suspicious use of AdjustPrivilegeToken
      PID:4056
    • C:\Windows\xdwdSystem32\Defender.exe
      C:\Windows\xdwdSystem32\Defender.exe
      1⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Reads the TCP/IP host and domain name from the registry
      • Suspicious use of AdjustPrivilegeToken
      PID:3492
    • C:\Windows\xdwdSystem32\Defender.exe
      C:\Windows\xdwdSystem32\Defender.exe
      1⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Reads the TCP/IP host and domain name from the registry
      • Suspicious use of AdjustPrivilegeToken
      PID:3532
    • C:\Windows\xdwdSystem32\Defender.exe
      C:\Windows\xdwdSystem32\Defender.exe
      1⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Reads the TCP/IP host and domain name from the registry
      • Suspicious use of AdjustPrivilegeToken
      PID:4120
    • C:\Windows\xdwdSystem32\Defender.exe
      C:\Windows\xdwdSystem32\Defender.exe
      1⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Reads the TCP/IP host and domain name from the registry
      • Suspicious use of AdjustPrivilegeToken
      PID:2848
    • C:\Windows\xdwdSystem32\Defender.exe
      C:\Windows\xdwdSystem32\Defender.exe
      1⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Reads the TCP/IP host and domain name from the registry
      • Suspicious use of AdjustPrivilegeToken
      PID:2996
    • C:\Windows\xdwdSystem32\Defender.exe
      C:\Windows\xdwdSystem32\Defender.exe
      1⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Reads the TCP/IP host and domain name from the registry
      • Suspicious use of AdjustPrivilegeToken
      PID:1260
    • C:\Windows\xdwdSystem32\Defender.exe
      C:\Windows\xdwdSystem32\Defender.exe
      1⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Reads the TCP/IP host and domain name from the registry
      • Suspicious use of AdjustPrivilegeToken
      PID:3972
    • C:\Windows\xdwdSystem32\Defender.exe
      C:\Windows\xdwdSystem32\Defender.exe
      1⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Reads the TCP/IP host and domain name from the registry
      • Suspicious use of AdjustPrivilegeToken
      PID:1184
    • C:\Windows\xdwdSystem32\Defender.exe
      C:\Windows\xdwdSystem32\Defender.exe
      1⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Reads the TCP/IP host and domain name from the registry
      • Suspicious use of AdjustPrivilegeToken
      PID:1208

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          Defender.exe.log

          • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\Defender.exe.log
          • Size 1KB
          • SHA256 d049789c187b2f58c900eab10205bc037740dca8640ab40c314790fefaab66ff
          • MD5 SHA1 SHA512 TLSH

          xdwd.dll

          • Path C:\Windows\xdwd.dll
          • Size 136KB
          • SHA256 35c8d022e1d917f1aabdceae98097ccc072161b302f84c768ca63e4b32ac2b66
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Defender.exe

          • Path C:\Windows\xdwdSystem32\Defender.exe
          • Size 579KB
          • SHA256 47530aea0d262967bc5ea92e4faeb18caafd66412cdf98af15267a405825afa4
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/1688-33-0x00000226D88D0000-0x00000226D8A79000-memory.dmp

          memory/1688-38-0x00000226D88D0000-0x00000226D8A79000-memory.dmp

          memory/4460-0-0x000002AAE8310000-0x000002AAE83A2000-memory.dmp

          memory/4460-1-0x000002AAEB4E0000-0x000002AAEB4F0000-memory.dmp