Analysis
- max time kernel
149s - max time network
152s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260911-en - resource tags
- submitted
12/09/2026, 10:09
General
- Target NurHUItan.exe
- Size 519KB
- Sample260912-l665nseq4z
- SHA256 18af58b9f4df45b56910f88247213dac4032f0d6db71e9a9a40f5051dbd40a53
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 System32 directory 7 IoCs
- Drops file in Program Files directory 7 IoCs
- Drops file in Windows directory 2 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 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
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C:\Users\Admin\AppData\Local\Temp\NurHUItan.exe"C:\Users\Admin\AppData\Local\Temp\NurHUItan.exe"1⤵
- Modifies WinLogon for persistence
- Drops file in System32 directory
- Drops file in Program Files directory
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SYSTEM32\CMD.exe"CMD" netsh advfirewall firewall add rule name="|6+7mQ#Em+Wgm2" dir=in action=allow program="C:\Windows\System32\xdwdDefender.exe" enable=yes & exit2⤵
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C:\Windows\SYSTEM32\cmd.exe"cmd" /c schtasks /create /f /sc minute /mo 1 /tn "Microsoft\Windows\WAppCrashNvTew" /tr "C:\Windows\System32\xdwdDefender.exe" /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 "Microsoft\Windows\WAppCrashNvTew" /tr "C:\Windows\System32\xdwdDefender.exe" /RL HIGHEST3⤵
- Scheduled Task/Job: Scheduled Task
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C:\Windows\SYSTEM32\cmd.exe"cmd" /c schtasks /create /f /sc minute /mo 30 /tn "Microsoft\MachineCore" /tr "C:\Program Files\Web\xdwdMalwareDef.exe" /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 30 /tn "Microsoft\MachineCore" /tr "C:\Program Files\Web\xdwdMalwareDef.exe" /RL HIGHEST3⤵
- Scheduled Task/Job: Scheduled Task
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C:\Windows\System32\xdwdDefender.exe"C:\Windows\System32\xdwdDefender.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in System32 directory
- Drops file in Program Files directory
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\System32\xdwdDefender.exeC:\Windows\System32\xdwdDefender.exe1⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in System32 directory
- Drops file in Program Files directory
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\System32\xdwdDefender.exe"C:\Windows\System32\xdwdDefender.exe"1⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in System32 directory
- Drops file in Program Files directory
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\System32\xdwdDefender.exe"C:\Windows\System32\xdwdDefender.exe"1⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in System32 directory
- Drops file in Program Files directory
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\System32\xdwdDefender.exe"C:\Windows\System32\xdwdDefender.exe"1⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in System32 directory
- Drops file in Program Files directory
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Enterprise v16
Execution
Command and Scripting Interpreter
1Windows Command Shell
1Scheduled Task/Job
1Scheduled Task
1Persistence
Boot or Logon Autostart Execution
1Winlogon Helper DLL
1Event Triggered Execution
1AppInit DLLs
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Boot or Logon Autostart Execution
1Winlogon Helper DLL
1Event Triggered Execution
1AppInit DLLs
1Scheduled Task/Job
1Scheduled Task
1Replay Monitor
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Downloads
xdwdDefender.exe
xdwd.dll
memory/4540-0-0x0000015CE7370000-0x0000015CE73F8000-memory.dmp
memory/4540-1-0x00007FFADD25F000-0x00007FFADD260000-memory.dmp
memory/4540-2-0x00007FFADD0D0000-0x00007FFADDA74000-memory.dmp
memory/4540-3-0x00007FFADD0D0000-0x00007FFADDA74000-memory.dmp
memory/4540-4-0x00007FFADD0D0000-0x00007FFADDA74000-memory.dmp
memory/4540-5-0x00007FFADD0D0000-0x00007FFADDA74000-memory.dmp
memory/4540-6-0x00007FFADD0D0000-0x00007FFADDA74000-memory.dmp
memory/4540-7-0x00007FFADD0D0000-0x00007FFADDA74000-memory.dmp
memory/4540-8-0x00007FFADD0D0000-0x00007FFADDA74000-memory.dmp
memory/4540-107-0x00007FFADD0D0000-0x00007FFADDA74000-memory.dmp