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• Execution on production systems may trigger PatchGuard (bugcheck 0x109).
• Requires test-signing mode (bcdedit /set testsigning on) and HVCI disabled.
• Use exclusively in isolated virtual machines with snapshot capability.

• DKOM: Unlinks target EPROCESS from PsActiveProcessHead.
• Inline hook for NtQuerySystemInformation (SystemProcessInformation class).
• ObRegisterCallbacks: Strips handle permissions for defense-in-depth.
• IOCTL interface for runtime hide/restore commands.
• Build-specific offset database (JSON) for portability.

1. Install the Windows Driver Kit (WDK) for Windows 11 (22H2 or later) alongside Visual Studio.
2. Edit offsets/win11_22621.json with your target build offsets (refer to docs/OFFSET_GUIDE.md).
3. Execute build.bat or open src/driver/ghost.sln in Visual Studio and compile.
4. Sign the driver with a test certificate or disable signature enforcement via bcdedit.

loader.exe ghost.sys offsets.json target.exe

• Strips PROCESS_QUERY_INFORMATION and related permissions from handles targeting the specified process via ObRegisterCallbacks.
• Causes certain enumeration tools (Task Manager, basic OpenProcess calls) to fail or return limited data.
• Provides a documented IOCTL interface for runtime hide/restore operations.

• DKOM unlinking of ActiveProcessLinks may hide the process from NtQuerySystemInformation in specific Windows builds.
• This technique is actively monitored by PatchGuard and may trigger bugcheck 0x109 within minutes to hours.

• Inline SSDT hooking for NtQuerySystemInformation is a functional stub only.
• No PatchGuard evasion, hypervisor manipulation, or virtual machine detection bypass is implemented.

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• A Windows 11 virtual machine (VMware, VirtualBox, or Hyper-V).
• Administrative access within the VM.
• Compiled driver (ghost.sys), loader (loader.exe), and offset file (offsets.json).
• Target executable (target.exe) ready for testing.

1. Launch your virtualization software and power on the Windows 11 VM.
2. Before making any changes, create a full system snapshot. Label it Pre-Rootkit-Clean.
3. Open the Start menu, type cmd, right-click Command Prompt, and select Run as administrator.

1. In the elevated Command Prompt, enter the following command:

   bcdedit /set testsigning on 

2. Press Enter. Wait for the confirmation message.
3. Restart the virtual machine to apply the boot configuration change.

1. Create a dedicated working directory inside the VM:

   mkdir C:\Research 

2. Transfer ghost.sys, loader.exe, offsets.json, and your target.exe into C:\Research.
3. Verify all files are present:

   dir C:\Research 

1. Navigate to the working directory:

   cd C:\Research 

2. Launch your target executable and verify it is running:

   start target.exe 

3. Open Task Manager (Ctrl+Shift+Esc) and confirm target.exe appears in the process list. Leave it running.

1. Return to the elevated Command Prompt in C:\Research.
2. Execute the loader with exact syntax:

   loader.exe ghost.sys offsets.json target.exe 

3. Observe the console output. You will receive status messages indicating driver installation, offset loading, and IOCTL delivery.
4. Wait for the final confirmation line: [+] Process hidden. Handle-based enumeration will fail.

1. Refresh Task Manager. The target.exe process will no longer appear in the standard list.
2. Attempt to query the process via PowerShell:

   Get-Process -Name target 

   The command will return no results or an access denied error, confirming the handle protection is active.
3. Note: The process continues to execute normally in the background. Network, CPU, and memory consumption remain unaffected.

1. To restore visibility before shutting down, run:

   sc stop 0x42Ghost 

2. Alternatively, close target.exe manually and reboot the virtual machine. The driver is configured for demand-start and will not persist across reboots unless manually configured.
3. Revert to the Pre-Rootkit-Clean snapshot if system instability or PatchGuard warnings occur.

• Never execute this project on host machines, production servers, or networked environments.
• Always maintain a clean snapshot prior to loading kernel drivers.
• Monitor the VM event log (eventvwr.msc) for System error 109 if PatchGuard triggers.
• This documentation reflects the current codebase state. Features marked as experimental require additional reverse engineering per Windows build.