//0x40 bytes (sizeof)
struct _KTIMER
{
    struct _DISPATCHER_HEADER Header;                                       //0x0
    union _ULARGE_INTEGER DueTime;                                          //0x18
    struct _LIST_ENTRY TimerListEntry;                                      //0x20
    struct _KDPC* Dpc;                                                      //0x30
    ULONG Processor;                                                        //0x38
    ULONG Period;                                                           //0x3c
};