Overview

overview

10

Static

static

5

dihwznbu32mudao4.exe

windows10-ltsc_2021-x64

10

dihwznbu32mudao4.exe

windows10-2004-x64

dihwznbu32mudao4.exe

windows11-21h2-x64

10

dihwznbu32mudao4.exe

windows11-ltsc_2024-x64

10

Analysis

  • user interaction
    yes
  • max time kernel
    12s
  • max time network
    150s
  • platform
    windows10-ltsc_2021_x64
  • resource
    win10ltsc2021-20260911-en
  • resource tags

    arch:x64arch:x86image:win10ltsc2021-20260911-enlocale:en-usos:windows10-ltsc_2021-x64systemwindows
  • submitted
    02/10/2026, 19:55

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General

  • Target
    dihwznbu32mudao4.exe
  • Size 842KB
  • Sample261002-ynbbhassew
  • SHA256 789dfc020cc7dda48b64edf0bd1f146ff8531883429c972dfff7111e383eb64b
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
defense_evasiondiscoveryexecutionpersistenceprivilege_escalation

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
  • Loads dropped DLL 7 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 1 TTPs 4 IoCs

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

    discovery
  • Drops file in Windows directory 4 IoCs
  • 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.

    execution
  • Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs

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

    discovery
  • Checks SCSI registry key(s) 3 TTPs 36 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 9 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 behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 26 IoCs
  • Suspicious use of FindShellTrayWindow 21 IoCs
  • Suspicious use of SendNotifyMessage 10 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 7 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\dihwznbu32mudao4.exe
    "C:\Users\Admin\AppData\Local\Temp\dihwznbu32mudao4.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Drops file in Windows directory
    • Reads the TCP/IP host and domain name from the registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:824
    • C:\Windows\SYSTEM32\CMD.exe
      "CMD" netsh advfirewall firewall add rule name="b"hD\UIz\htM\F" dir=in action=allow program="C:\Windows\xdwd_Microsoft67" enable=yes & exit
      2⤵
        PID:5004
      • C:\Windows\SYSTEM32\cmd.exe
        "cmd" /c schtasks /create /f /sc minute /mo 1 /tn "" /tr "C:\Windows\xdwd_Microsoft67" /RL HIGHEST & exit
        2⤵
        • Executes a command shell one-liner
        • Suspicious use of WriteProcessMemory
        PID:1268
        • C:\Windows\system32\schtasks.exe
          schtasks /create /f /sc minute /mo 1 /tn "" /tr "C:\Windows\xdwd_Microsoft67" /RL HIGHEST
          3⤵
          • Scheduled Task/Job: Scheduled Task
          PID:2412
      • C:\Windows\SYSTEM32\cmd.exe
        "cmd" /C taskkill /im explorer.exe /f > NUL 2>&1 && timeout /t 3 /nobreak > NUL && start explorer.exe
        2⤵
        • Executes a command shell one-liner
        • Suspicious use of WriteProcessMemory
        PID:5064
        • 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:4936
        • C:\Windows\system32\timeout.exe
          timeout /t 3 /nobreak
          3⤵
          • Loads dropped DLL
          • Delays execution with timeout.exe
          • Suspicious behavior: EnumeratesProcesses
          PID:3724
        • 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:2668
    • C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\TextInputHost.exe
      "C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\TextInputHost.exe" -ServerName:InputApp.AppXk0k6mrh4r2q0ct33a9wgbez0x7v9cz5y.mca
      1⤵
      • Suspicious use of SetWindowsHookEx
      PID:3240
    • 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:1948
    • C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
      "C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
      1⤵
        PID:2556
      • C:\Windows\xdwd_Microsoft67
        "C:\Windows\xdwd_Microsoft67"
        1⤵
          PID:4124
        • C:\Windows\system32\msiexec.exe
          C:\Windows\system32\msiexec.exe /V
          1⤵
            PID:2168

          Network

                MITRE ATT&CK Enterprise v16

                Reconnaissance

                Resource Development

                Initial Access

                Execution

                Command and Scripting Interpreter

                1
                T1059

                Windows Command Shell

                1
                T1059.003

                Scheduled Task/Job

                1
                T1053

                Scheduled Task

                1
                T1053.005

                Persistence

                Boot or Logon Autostart Execution

                2
                T1547

                Active Setup

                1
                T1547.014

                Winlogon Helper DLL

                1
                T1547.004

                Event Triggered Execution

                1
                T1546

                AppInit DLLs

                1
                T1546.010

                Scheduled Task/Job

                1
                T1053

                Scheduled Task

                1
                T1053.005

                Privilege Escalation

                Boot or Logon Autostart Execution

                2
                T1547

                Active Setup

                1
                T1547.014

                Winlogon Helper DLL

                1
                T1547.004

                Event Triggered Execution

                1
                T1546

                AppInit DLLs

                1
                T1546.010

                Scheduled Task/Job

                1
                T1053

                Scheduled Task

                1
                T1053.005

                Defense Evasion

                Modify Registry

                2
                T1112

                Credential Access

                Discovery

                Peripheral Device Discovery

                2
                T1120

                Query Registry

                3
                T1012

                System Information Discovery

                2
                T1082

                System Network Configuration Discovery

                2
                T1016

                Internet Connection Discovery

                1
                T1016.001

                Lateral Movement

                Collection

                Command and Control

                Exfiltration

                Impact

                Replay Monitor

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                Downloads

                microsoft.windows[1].xml
                • Path C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.Search_cw5n1h2txyewy\AC\Microsoft\Internet Explorer\DOMStore\BJCA0IZM\microsoft.windows[1].xml
                • Size 97B
                • SHA256 92466f82cf14aa995418e12664c2b231c228c5f1203978bfe06f205c696b6726
                • MD5 SHA1 SHA512 TLSH
                Submit Download

                AppCache134354445671735640.txt.~tmp
                • Path C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.Search_cw5n1h2txyewy\LocalState\DeviceSearchCache\AppCache134354445671735640.txt.~tmp
                • Size 85KB
                • SHA256 de616092544e6fe5f62b078359e87a034350ee87ca4de22aa0523ca7d625655d
                • 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

                xdwd_Microsoft67
                • Path C:\Windows\xdwd_Microsoft67
                • Size 842KB
                • SHA256 789dfc020cc7dda48b64edf0bd1f146ff8531883429c972dfff7111e383eb64b
                • MD5 SHA1 SHA512 SSDEEP TLSH
                Submit Download

                memory/824-1-0x00000228BFFC0000-0x00000228BFFD0000-memory.dmp
                Download

                memory/824-42-0x00000228BFFC0000-0x00000228BFFD0000-memory.dmp
                Download

                memory/824-0-0x00000228BFAB0000-0x00000228BFB84000-memory.dmp
                Download

                memory/2556-77-0x0000020F92BC0000-0x0000020F92BE0000-memory.dmp
                Download

                memory/2556-93-0x0000020FA7530000-0x0000020FA7630000-memory.dmp
                Download

                memory/2556-46-0x0000020F91F00000-0x0000020F92000000-memory.dmp
                Download

                memory/2556-79-0x0000020F92BE0000-0x0000020F92C00000-memory.dmp
                Download

                memory/2556-78-0x0000020F94200000-0x0000020F94220000-memory.dmp
                Download

                memory/2668-45-0x00000000032A0000-0x00000000032A1000-memory.dmp
                Download

                memory/4124-180-0x0000024C56490000-0x0000024C564BE000-memory.dmp
                Download

                memory/4936-35-0x00007FFC6A110000-0x00007FFC6A308000-memory.dmp
                Download

                memory/4936-34-0x00007FFC6A110000-0x00007FFC6A308000-memory.dmp
                Download

                memory/4936-33-0x00007FFC6A1AD000-0x00007FFC6A1AE000-memory.dmp
                Download