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Used to execute code for a different thread. Malware sometimes uses QueueUserAPC to inject code into another process.
DWORD WINAPI QueueUserAPC( _In_ PAPCFUNC pfnAPC, _In_ HANDLE hThread, _In_ ULONG_PTR dwData );
- pfnAPC [in]
- A pointer to the application-supplied APC function to be called when the specified thread performs an alertable wait operation. For more information, see APCProc.
- hThread [in]
- A handle to the thread. The handle must have the THREAD_SET_CONTEXT access right.
- dwData [in]
- A single value that is passed to the APC function pointed to by the pfnAPC parameter.
If the function succeeds, the return value is nonzero.
If the function fails, the return value is zero. To get extended error information, call GetLastError.