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//0x3c bytes (sizeof)
struct _ETW_REG_ENTRY
{
    struct _LIST_ENTRY RegList;                                             //0x0
    struct _LIST_ENTRY GroupRegList;                                        //0x8
    struct _ETW_GUID_ENTRY* GuidEntry;                                      //0x10
    struct _ETW_GUID_ENTRY* GroupEntry;                                     //0x14
    union
    {
        struct _ETW_REPLY_QUEUE* ReplyQueue;                                //0x18
        struct _ETW_QUEUE_ENTRY* ReplySlot[4];                              //0x18
        struct
        {
            VOID* Caller;                                                   //0x18
            ULONG SessionId;                                                //0x1c
        };
    };
    union
    {
        struct _EPROCESS* Process;                                          //0x28
        VOID* CallbackContext;                                              //0x28
    };
    VOID* Callback;                                                         //0x2c
    USHORT Index;                                                           //0x30
    union
    {
        USHORT Flags;                                                       //0x32
        struct
        {
            USHORT DbgKernelRegistration:1;                                 //0x32
            USHORT DbgUserRegistration:1;                                   //0x32
            USHORT DbgReplyRegistration:1;                                  //0x32
            USHORT DbgClassicRegistration:1;                                //0x32
            USHORT DbgSessionSpaceRegistration:1;                           //0x32
            USHORT DbgModernRegistration:1;                                 //0x32
            USHORT DbgClosed:1;                                             //0x32
            USHORT DbgInserted:1;                                           //0x32
            USHORT DbgWow64:1;                                              //0x32
            USHORT DbgUseDescriptorType:1;                                  //0x32
            USHORT DbgDropProviderTraits:1;                                 //0x32
        };
    };
    UCHAR EnableMask;                                                       //0x34
    UCHAR GroupEnableMask;                                                  //0x35
    UCHAR HostEnableMask;                                                   //0x36
    UCHAR HostGroupEnableMask;                                              //0x37
    struct _ETW_PROVIDER_TRAITS* Traits;                                    //0x38
};