// ntddk.h
LONGLONG PsGetProcessCreateTimeQuadPart(
[in] PEPROCESS Process
);
View the official Windows Driver Kit DDI referenceNo description available.
The PsGetProcessCreateTimeQuadPart routine returns a LONGLONG value that represents the time at which the process was created.
Process [in]A pointer to the EPROCESS structure that represents the process. Drivers can use the PsGetCurrentProcess and ObReferenceObjectByHandle routines to obtain a pointer to the EPROCESS structure for a process.
PsGetProcessCreateTimeQuadPart returns the process creation time, in 100-nanosecond intervals, since January 1, 1601. The return value is the same as the value that the KeQuerySystemTime routine returns when the process was created. (Note that if the system time is changed, the value that PsGetProcessCreateTimeQuadPart returns is unaffected.)