Analysis
- max time kernel
9s - max time network
149s - platform
windows11-21h2_x64 - resource
win11-20260911-en - resource tags
- submitted
02/10/2026, 19:55
General
- Target dihwznbu32mudao4.exe
- Size 842KB
- Sample261002-ynbbhassew
- SHA256 789dfc020cc7dda48b64edf0bd1f146ff8531883429c972dfff7111e383eb64b
Malware Config
Signatures
- Modifies WinLogon for persistence 2 TTPs 1 IoCs
- 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.
- 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.
- Loads dropped DLL 5 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 3 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs
Start PowerShell.
- Drops file in Windows directory 4 IoCs
- Executes a command shell one-liner 1 TTPs 3 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 2 IoCs
The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.
- 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
- Kills process with taskkill 1 IoCs
- Modifies registry class 11 IoCs
- Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 10 IoCs
- Suspicious use of AdjustPrivilegeToken 24 IoCs
- Suspicious use of FindShellTrayWindow 5 IoCs
- Suspicious use of SendNotifyMessage 11 IoCs
- Suspicious use of SetWindowsHookEx 1 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.
Processes
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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
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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 & exit2⤵
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C:\Windows\SYSTEM32\cmd.exe"cmd" /c schtasks /create /f /sc minute /mo 1 /tn "" /tr "C:\Windows\xdwd_Microsoft67" /RL HIGHEST & exit2⤵
- Executes a command shell one-liner
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\schtasks.exeschtasks /create /f /sc minute /mo 1 /tn "" /tr "C:\Windows\xdwd_Microsoft67" /RL HIGHEST3⤵
- Scheduled Task/Job: Scheduled Task
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C:\Windows\SYSTEM32\cmd.exe"cmd" /C taskkill /im explorer.exe /f > NUL 2>&1 && timeout /t 3 /nobreak > NUL && start explorer.exe2⤵
- Executes a command shell one-liner
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\taskkill.exetaskkill /im explorer.exe /f3⤵
- Loads dropped DLL
- Kills process with taskkill
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\system32\timeout.exetimeout /t 3 /nobreak3⤵
- Loads dropped DLL
- Delays execution with timeout.exe
- Suspicious behavior: EnumeratesProcesses
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C:\Windows\explorer.exeexplorer.exe3⤵
- 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
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C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\SearchHost.exe"C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\SearchHost.exe" -ServerName:CortanaUI.AppXstmwaab17q5s3y22tp6apqz7a45vwv65.mca1⤵
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C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe"C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca1⤵
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C:\Windows\xdwd_Microsoft67C:\Windows\xdwd_Microsoft671⤵
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /c start /b powershell –ExecutionPolicy Bypass Start-Process -FilePath '"C:\Users\Admin\AppData\Local\Temp\tmpE4BF.tmp.exe"' & exit2⤵
- Executes a command shell one-liner
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exepowershell –ExecutionPolicy Bypass Start-Process -FilePath '"C:\Users\Admin\AppData\Local\Temp\tmpE4BF.tmp.exe"'3⤵
- Command and Scripting Interpreter: PowerShell
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Network
MITRE ATT&CK Enterprise v16
Execution
Command and Scripting Interpreter
2PowerShell
1Windows Command Shell
1Scheduled Task/Job
1Scheduled Task
1Persistence
Boot or Logon Autostart Execution
2Active Setup
1Winlogon Helper DLL
1Event Triggered Execution
1AppInit DLLs
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Boot or Logon Autostart Execution
2Active Setup
1Winlogon Helper DLL
1Event Triggered Execution
1AppInit DLLs
1Scheduled Task/Job
1Scheduled Task
1Replay Monitor
Loading Replay Monitor...
Downloads
xdwd.dll
xdwd_Microsoft67
memory/2716-267-0x000002AD72660000-0x000002AD7268E000-memory.dmp
memory/2716-285-0x000002AD72530000-0x000002AD7253C000-memory.dmp
memory/3996-81-0x0000023A78340000-0x0000023A78440000-memory.dmp
memory/3996-60-0x0000023A76B00000-0x0000023A76C00000-memory.dmp
memory/3996-114-0x0000023A78340000-0x0000023A78440000-memory.dmp
memory/3996-117-0x0000023B7AB90000-0x0000023B7ABB0000-memory.dmp
memory/3996-118-0x0000023A7A020000-0x0000023A7A040000-memory.dmp
memory/3996-132-0x0000023B7BC40000-0x0000023B7BD40000-memory.dmp
memory/3996-61-0x0000023A76B00000-0x0000023A76C00000-memory.dmp
memory/4340-0-0x00000231E56C0000-0x00000231E5794000-memory.dmp
memory/4340-230-0x0000023181800000-0x0000023181810000-memory.dmp
memory/4340-1-0x0000023181800000-0x0000023181810000-memory.dmp