NTSTATUS __fastcall ExpWriteSiloTimeZoneMarker(unsigned __int8 a1){
UINT64 ValueLength;
int ValueData;
ValueData = a1;
LODWORD(ValueLength) = 4;
return RtlWriteRegistryValue(2ui64, L"TimeZoneInformation", L"SiloTimeZoneMarker", 4ui64, &ValueData, ValueLength);
}