Analysis
- max time kernel
150s - max time network
151s - platform
windows11-21h2_x64 - resource
win11-20260130-en - resource tags
- submitted
11/05/2026, 14:34
General
- Target mei44uuabaj9ctvf.exe
- Size 502KB
- Sample260511-rxt2mscv7y
- SHA256 6f1225c6fc8dc975a884724e917f0e6e88fbe9e3b8764a17882a1187e584fcb1
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 6 IoCs
- Loads dropped DLL 8 IoCs
- Looks up external IP address via web service 9 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Drops file in System32 directory 8 IoCs
- Drops file in Windows directory 10 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Modifies registry class 1 IoCs
- 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 8 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\mei44uuabaj9ctvf.exe"C:\Users\Admin\AppData\Local\Temp\mei44uuabaj9ctvf.exe"1⤵
- Modifies WinLogon for persistence
- Drops file in System32 directory
- Drops file in Windows directory
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SYSTEM32\CMD.exe"CMD" netsh advfirewall firewall add rule name="?^>w{;,k{>"K{M" 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⤵
- 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:\Windows\Web\xdwdMalwareDef.exe" /RL HIGHEST & exit2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\schtasks.exeschtasks /create /f /sc minute /mo 30 /tn "Microsoft\MachineCore" /tr "C:\Windows\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 Windows 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 Windows directory
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\Web\xdwdMalwareDef.exeC:\Windows\Web\xdwdMalwareDef.exe1⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in System32 directory
- Drops file in Windows 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 Windows 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 Windows 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 Windows directory
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Enterprise v16
Persistence
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.log
xdwd.dll
memory/1716-131-0x00000000028C0000-0x000000000292F000-memory.dmp
memory/1716-132-0x000000001BBA0000-0x000000001BBB2000-memory.dmp
memory/1716-167-0x00000000028C0000-0x000000000292F000-memory.dmp
memory/1716-130-0x00000000028A0000-0x00000000028AC000-memory.dmp
memory/2836-127-0x0000000002C70000-0x0000000002C7C000-memory.dmp
memory/2836-128-0x000000001BB00000-0x000000001BB6F000-memory.dmp
memory/2836-129-0x0000000002D00000-0x0000000002D12000-memory.dmp
memory/3880-153-0x0000000002E80000-0x0000000002E92000-memory.dmp
memory/3880-152-0x000000001BDC0000-0x000000001BE2F000-memory.dmp
memory/3880-151-0x0000000002E30000-0x0000000002E3C000-memory.dmp
memory/4060-125-0x0000000001740000-0x00000000017AF000-memory.dmp
memory/4060-126-0x00000000030A0000-0x00000000030B2000-memory.dmp
memory/4060-124-0x0000000001710000-0x000000000171C000-memory.dmp
memory/4228-116-0x000000001B670000-0x000000001B67C000-memory.dmp
memory/4228-117-0x000000001B680000-0x000000001B6EF000-memory.dmp
memory/4228-118-0x000000001BC80000-0x000000001BC92000-memory.dmp
memory/4888-106-0x0000000002380000-0x00000000023EF000-memory.dmp
memory/4888-0-0x00000000001E0000-0x0000000000264000-memory.dmp
memory/4888-107-0x000000001B210000-0x000000001B222000-memory.dmp
memory/4888-105-0x0000000002370000-0x000000000237C000-memory.dmp
memory/4888-1-0x000000001B2C0000-0x000000001B2D0000-memory.dmp
memory/5484-174-0x0000000002C60000-0x0000000002C6C000-memory.dmp
memory/5484-175-0x0000000002C70000-0x0000000002CDF000-memory.dmp
memory/5484-176-0x000000001BE60000-0x000000001BE72000-memory.dmp