Overview

overview

10

Static

static

5

start.exe

windows10-2004-x64

10

start.exe

windows11-ltsc_2024-x64

10

Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    23/06/2026, 16:07

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General

  • Target
    start.exe
  • Size 818KB
  • Sample260623-tkpbqset2t
  • SHA256 edc0ba83464195a702b363aea7f3537baf99a098c2d095b9aaa11063c8f3e47c
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
defense_evasionexecutionpersistenceprivilege_escalationransomware

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
    persistence
  • Boot or Logon Autostart Execution: Active Setup 2 TTPs 1 IoCs

    Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

    persistence
  • 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.

    persistenceprivilege_escalation
  • Executes dropped EXE 5 IoCs
  • Loads dropped DLL 28 IoCs
  • Enumerates connected drives 3 TTPs 2 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Looks up external IP address via web service 8 IoCs

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

  • Drops file in Windows directory 2 IoCs
  • Checks SCSI registry key(s) 3 TTPs 58 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Delays execution with timeout.exe 1 IoCs
    defense_evasion
  • Kills process with taskkill 1 IoCs
    defense_evasion
  • Modifies registry class 64 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 11 IoCs

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

    persistenceexecution
  • Suspicious behavior: EnumeratesProcesses 32 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 64 IoCs
  • Suspicious use of SendNotifyMessage 44 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 27 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
  • Uses Volume Shadow Copy WMI provider

    The Volume Shadow Copy service is used to manage backups/snapshots.

    ransomware
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

    ransomware

Processes

  • C:\Users\Admin\AppData\Local\Temp\start.exe
    "C:\Users\Admin\AppData\Local\Temp\start.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3148
    • C:\Windows\SYSTEM32\CMD.exe
      "CMD" netsh advfirewall firewall add rule name="Mok:<TD^<kjO<J" dir=in action=allow program="C:\Users\Admin\AppData\Roaming\Sub\xdwdMalwareDef.exe" enable=yes & exit
      2⤵
        PID:4264
      • C:\Windows\SYSTEM32\cmd.exe
        "cmd" /c schtasks /create /f /sc minute /mo 1 /tn "" /tr "C:\Users\Admin\AppData\Roaming\Sub\xdwdMalwareDef.exe" /RL HIGHEST & exit
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:3036
        • C:\Windows\system32\schtasks.exe
          schtasks /create /f /sc minute /mo 1 /tn "" /tr "C:\Users\Admin\AppData\Roaming\Sub\xdwdMalwareDef.exe" /RL HIGHEST
          3⤵
          • Scheduled Task/Job: Scheduled Task
          PID:4556
      • C:\Windows\SYSTEM32\cmd.exe
        "cmd" /c schtasks /create /f /sc minute /mo 30 /tn "" /tr "C:\Windows\Sub\xdwdWindowsUpdate.exe" /RL HIGHEST & exit
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:228
        • C:\Windows\system32\schtasks.exe
          schtasks /create /f /sc minute /mo 30 /tn "" /tr "C:\Windows\Sub\xdwdWindowsUpdate.exe" /RL HIGHEST
          3⤵
          • Scheduled Task/Job: Scheduled Task
          PID:1756
      • C:\Windows\SYSTEM32\cmd.exe
        "cmd" /C taskkill /im explorer.exe /f > NUL 2>&1 && timeout /t 3 /nobreak > NUL && start explorer.exe
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:2484
        • C:\Windows\system32\taskkill.exe
          taskkill /im explorer.exe /f
          3⤵
          • Loads dropped DLL
          • Kills process with taskkill
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:4544
        • C:\Windows\system32\timeout.exe
          timeout /t 3 /nobreak
          3⤵
          • Loads dropped DLL
          • Delays execution with timeout.exe
          • Suspicious behavior: EnumeratesProcesses
          PID:4316
        • C:\Windows\explorer.exe
          explorer.exe
          3⤵
          • Boot or Logon Autostart Execution: Active Setup
          • Loads dropped DLL
          • Enumerates connected drives
          • Checks SCSI registry key(s)
          • Modifies registry class
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of FindShellTrayWindow
          • Suspicious use of SendNotifyMessage
          • Suspicious use of SetWindowsHookEx
          PID:1568
      • C:\Windows\SYSTEM32\cmd.exe
        "cmd" /c schtasks /create /f /sc minute /mo 1 /tn "" /tr "C:\Users\Admin\AppData\Roaming\Sub\xdwdMalwareDef.exe" /RL HIGHEST & exit
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:4116
        • C:\Windows\system32\schtasks.exe
          schtasks /create /f /sc minute /mo 1 /tn "" /tr "C:\Users\Admin\AppData\Roaming\Sub\xdwdMalwareDef.exe" /RL HIGHEST
          3⤵
          • Scheduled Task/Job: Scheduled Task
          PID:4012
      • C:\Windows\SYSTEM32\cmd.exe
        "cmd" /c schtasks /create /f /sc minute /mo 30 /tn "" /tr "C:\Windows\Sub\xdwdWindowsUpdate.exe" /RL HIGHEST & exit
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:2864
        • C:\Windows\system32\schtasks.exe
          schtasks /create /f /sc minute /mo 30 /tn "" /tr "C:\Windows\Sub\xdwdWindowsUpdate.exe" /RL HIGHEST
          3⤵
          • Scheduled Task/Job: Scheduled Task
          PID:3812
      • C:\Windows\SYSTEM32\cmd.exe
        "cmd" /c schtasks /create /f /sc minute /mo 1 /tn "" /tr "C:\Users\Admin\AppData\Roaming\Sub\xdwdMalwareDef.exe" /RL HIGHEST & exit
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1348
        • C:\Windows\system32\schtasks.exe
          schtasks /create /f /sc minute /mo 1 /tn "" /tr "C:\Users\Admin\AppData\Roaming\Sub\xdwdMalwareDef.exe" /RL HIGHEST
          3⤵
          • Scheduled Task/Job: Scheduled Task
          PID:4056
      • C:\Windows\SYSTEM32\cmd.exe
        "cmd" /c schtasks /create /f /sc minute /mo 30 /tn "" /tr "C:\Windows\Sub\xdwdWindowsUpdate.exe" /RL HIGHEST & exit
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:2612
        • C:\Windows\system32\schtasks.exe
          schtasks /create /f /sc minute /mo 30 /tn "" /tr "C:\Windows\Sub\xdwdWindowsUpdate.exe" /RL HIGHEST
          3⤵
          • Scheduled Task/Job: Scheduled Task
          PID:2940
    • C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
      "C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
      1⤵
      • Modifies registry class
      • Suspicious use of SetWindowsHookEx
      PID:1352
    • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
      "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
      1⤵
      • Modifies registry class
      • Suspicious use of SetWindowsHookEx
      PID:4712
    • C:\Users\Admin\AppData\Roaming\Sub\xdwdMalwareDef.exe
      C:\Users\Admin\AppData\Roaming\Sub\xdwdMalwareDef.exe
      1⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4004
      • C:\Windows\system32\cmd.exe
        "cmd" /c schtasks /create /f /sc minute /mo 30 /tn "" /tr "C:\Windows\Sub\xdwdWindowsUpdate.exe" /RL HIGHEST & exit
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:3220
        • C:\Windows\system32\schtasks.exe
          schtasks /create /f /sc minute /mo 30 /tn "" /tr "C:\Windows\Sub\xdwdWindowsUpdate.exe" /RL HIGHEST
          3⤵
          • Scheduled Task/Job: Scheduled Task
          PID:1148
      • C:\Windows\system32\cmd.exe
        "cmd" /c schtasks /create /f /sc minute /mo 30 /tn "" /tr "C:\Windows\Sub\xdwdWindowsUpdate.exe" /RL HIGHEST & exit
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:2324
        • C:\Windows\system32\schtasks.exe
          schtasks /create /f /sc minute /mo 30 /tn "" /tr "C:\Windows\Sub\xdwdWindowsUpdate.exe" /RL HIGHEST
          3⤵
          • Scheduled Task/Job: Scheduled Task
          PID:2664
      • C:\Windows\system32\cmd.exe
        "cmd" /c schtasks /create /f /sc minute /mo 30 /tn "" /tr "C:\Windows\Sub\xdwdWindowsUpdate.exe" /RL HIGHEST & exit
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:2596
        • C:\Windows\system32\schtasks.exe
          schtasks /create /f /sc minute /mo 30 /tn "" /tr "C:\Windows\Sub\xdwdWindowsUpdate.exe" /RL HIGHEST
          3⤵
          • Scheduled Task/Job: Scheduled Task
          PID:3416
      • C:\Windows\system32\cmd.exe
        "cmd" /c schtasks /create /f /sc minute /mo 30 /tn "" /tr "C:\Windows\Sub\xdwdWindowsUpdate.exe" /RL HIGHEST & exit
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:4068
        • C:\Windows\system32\schtasks.exe
          schtasks /create /f /sc minute /mo 30 /tn "" /tr "C:\Windows\Sub\xdwdWindowsUpdate.exe" /RL HIGHEST
          3⤵
          • Scheduled Task/Job: Scheduled Task
          PID:4032
    • C:\Users\Admin\AppData\Roaming\Sub\xdwdMalwareDef.exe
      C:\Users\Admin\AppData\Roaming\Sub\xdwdMalwareDef.exe
      1⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3556
      • C:\Windows\system32\cmd.exe
        "cmd" /c schtasks /create /f /sc minute /mo 30 /tn "" /tr "C:\Windows\Sub\xdwdWindowsUpdate.exe" /RL HIGHEST & exit
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:3024
        • C:\Windows\system32\schtasks.exe
          schtasks /create /f /sc minute /mo 30 /tn "" /tr "C:\Windows\Sub\xdwdWindowsUpdate.exe" /RL HIGHEST
          3⤵
          • Scheduled Task/Job: Scheduled Task
          PID:3720
    • C:\Users\Admin\AppData\Roaming\Sub\xdwdMalwareDef.exe
      C:\Users\Admin\AppData\Roaming\Sub\xdwdMalwareDef.exe
      1⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of AdjustPrivilegeToken
      PID:3616
    • C:\Users\Admin\AppData\Roaming\Sub\xdwdMalwareDef.exe
      C:\Users\Admin\AppData\Roaming\Sub\xdwdMalwareDef.exe
      1⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of AdjustPrivilegeToken
      PID:3720
    • C:\Users\Admin\AppData\Roaming\Sub\xdwdMalwareDef.exe
      C:\Users\Admin\AppData\Roaming\Sub\xdwdMalwareDef.exe
      1⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of AdjustPrivilegeToken
      PID:1392

    Network

          MITRE ATT&CK Enterprise v16

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          Downloads

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

          AppCache134267044495844405.txt
          • Path C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.Search_cw5n1h2txyewy\LocalState\DeviceSearchCache\AppCache134267044495844405.txt
          • Size 85KB
          • SHA256 0892c4805a95859b1392f598842522b7929f43fe78d668789e34b32e4924f1c3
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          xdwdMalwareDef.exe
          • Path C:\Users\Admin\AppData\Roaming\Sub\xdwdMalwareDef.exe
          • Size 818KB
          • SHA256 edc0ba83464195a702b363aea7f3537baf99a098c2d095b9aaa11063c8f3e47c
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

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

          memory/1352-54-0x00000131EB5D0000-0x00000131EB5F0000-memory.dmp
          Download

          memory/1352-36-0x00000131EAD00000-0x00000131EAE00000-memory.dmp
          Download

          memory/1352-38-0x00000131EAD00000-0x00000131EAE00000-memory.dmp
          Download

          memory/1352-41-0x00000131EB920000-0x00000131EB940000-memory.dmp
          Download

          memory/1352-67-0x00000131EBCE0000-0x00000131EBD00000-memory.dmp
          Download

          memory/1568-42-0x0000000004550000-0x0000000004551000-memory.dmp
          Download

          memory/3148-0-0x000001E4DA6A0000-0x000001E4DA76E000-memory.dmp
          Download

          memory/3148-13-0x000001E4F4F40000-0x000001E4F4F50000-memory.dmp
          Download

          memory/3148-1-0x000001E4F4F40000-0x000001E4F4F50000-memory.dmp
          Download