Analysis
- max time kernel
300s - max time network
302s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
- submitted
14/08/2026, 00:58
General
- Target start.exe
- Size 558KB
- Sample260814-bbq5vsam71
- SHA256 fbe1a132a4dda975e349ba6c6d29e79bf247f0f18a1aeec6d80ce16e7e92ccbb
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 1 TTPs 10 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Drops file in Program Files 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).
- 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 behavior: EnumeratesProcesses 12 IoCs
- 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\start.exe"C:\Users\Admin\AppData\Local\Temp\start.exe"1⤵
- Modifies WinLogon for persistence
- 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="/TGjtf&`tG\Hte" dir=in action=allow program="C:\Windows\Drlvers.exe" enable=yes & exit2⤵
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C:\Windows\SYSTEM32\cmd.exe"cmd" /c schtasks /create /f /sc minute /mo 1 /tn "RuntimeBroker.exe" /tr "C:\Windows\Drlvers.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 "RuntimeBroker.exe" /tr "C:\Windows\Drlvers.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 "RuntimeBroker" /tr "C:\Program Files\RuntimeBroker.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 "RuntimeBroker" /tr "C:\Program Files\RuntimeBroker.exe" /RL HIGHEST3⤵
- Scheduled Task/Job: Scheduled Task
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C:\Windows\Drlvers.exe"C:\Windows\Drlvers.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\Drlvers.exeC:\Windows\Drlvers.exe1⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\Drlvers.exe"C:\Windows\Drlvers.exe"1⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\Drlvers.exe"C:\Windows\Drlvers.exe"1⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\Drlvers.exe"C:\Windows\Drlvers.exe"1⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\Drlvers.exe"C:\Windows\Drlvers.exe"1⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- 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
xdwd.dll
memory/2316-6-0x00007FF83E830000-0x00007FF83F1D4000-memory.dmp
memory/2316-2-0x00007FF83E830000-0x00007FF83F1D4000-memory.dmp
memory/2316-3-0x00007FF83E830000-0x00007FF83F1D4000-memory.dmp
memory/2316-4-0x00007FF83E830000-0x00007FF83F1D4000-memory.dmp
memory/2316-5-0x00007FF83E830000-0x00007FF83F1D4000-memory.dmp
memory/2316-0-0x000001DACF400000-0x000001DACF490000-memory.dmp
memory/2316-7-0x00007FF83E830000-0x00007FF83F1D4000-memory.dmp
memory/2316-8-0x00007FF83E830000-0x00007FF83F1D4000-memory.dmp
memory/2316-9-0x00007FF83E830000-0x00007FF83F1D4000-memory.dmp
memory/2316-10-0x00007FF83E830000-0x00007FF83F1D4000-memory.dmp
memory/2316-1-0x00007FF83E9BF000-0x00007FF83E9C0000-memory.dmp
memory/2316-111-0x00007FF83E830000-0x00007FF83F1D4000-memory.dmp
memory/2316-114-0x00007FF83E830000-0x00007FF83F1D4000-memory.dmp