Analysis

  • max time kernel
    150s
  • max time network
    126s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    26/08/2026, 19:46

General

  • Target
    6653a00a517z0ibw.exe
  • Size 528KB
  • Sample260826-yhbebaak21
  • SHA256 0aee38f28772fba89cfd86c6a6af41772573b402eac057b6d9be13e7bd4e2c33
  • 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.

  • Executes dropped EXE 5 IoCs
  • Loads dropped DLL 7 IoCs
  • Looks up external IP address via web service 1 TTPs 7 IoCs

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

  • Drops file in Windows directory 16 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.

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

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

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 7 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\6653a00a517z0ibw.exe
    "C:\Users\Admin\AppData\Local\Temp\6653a00a517z0ibw.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3412
    • C:\Windows\SYSTEM32\CMD.exe
      "CMD" netsh advfirewall firewall add rule name="C~%V&pq &%)@&\" dir=in action=allow program="C:\Windows\xdwdSystem32\Defender.exe" enable=yes & exit
      2⤵
        PID:4332
      • 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:1632
        • 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:5880
      • C:\Windows\SYSTEM32\cmd.exe
        "cmd" /c schtasks /create /f /sc minute /mo 30 /tn "Microsoft\MachineCore" /tr "C:\Windows\Web\MalwareDef.exe" /RL HIGHEST & exit
        2⤵
        • Executes a command shell one-liner
        • Suspicious use of WriteProcessMemory
        PID:5804
        • C:\Windows\system32\schtasks.exe
          schtasks /create /f /sc minute /mo 30 /tn "Microsoft\MachineCore" /tr "C:\Windows\Web\MalwareDef.exe" /RL HIGHEST
          3⤵
          • Scheduled Task/Job: Scheduled Task
          PID:2016
      • C:\Windows\xdwdSystem32\Defender.exe
        "C:\Windows\xdwdSystem32\Defender.exe"
        2⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Drops file in Windows directory
        • Suspicious use of AdjustPrivilegeToken
        PID:6016
    • C:\Windows\Web\MalwareDef.exe
      C:\Windows\Web\MalwareDef.exe
      1⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in Windows directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:5808
    • C:\Windows\xdwdSystem32\Defender.exe
      C:\Windows\xdwdSystem32\Defender.exe
      1⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in Windows directory
      • Suspicious use of AdjustPrivilegeToken
      PID:4984
    • C:\Windows\xdwdSystem32\Defender.exe
      "C:\Windows\xdwdSystem32\Defender.exe"
      1⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in Windows directory
      • Suspicious use of AdjustPrivilegeToken
      PID:4128
    • C:\Windows\xdwdSystem32\Defender.exe
      "C:\Windows\xdwdSystem32\Defender.exe"
      1⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in Windows directory
      • Suspicious use of AdjustPrivilegeToken
      PID:2580

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          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 528KB
          • SHA256 0aee38f28772fba89cfd86c6a6af41772573b402eac057b6d9be13e7bd4e2c33
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/3412-0-0x000002099B660000-0x000002099B6EA000-memory.dmp

          memory/3412-1-0x00007FFE2A8EF000-0x00007FFE2A8F0000-memory.dmp

          memory/3412-2-0x00007FFE2A760000-0x00007FFE2B104000-memory.dmp

          memory/3412-3-0x00007FFE2A760000-0x00007FFE2B104000-memory.dmp

          memory/3412-4-0x00007FFE2A760000-0x00007FFE2B104000-memory.dmp

          memory/3412-5-0x00007FFE2A760000-0x00007FFE2B104000-memory.dmp

          memory/3412-111-0x00007FFE2A760000-0x00007FFE2B104000-memory.dmp