Hi, I noticed that when I do a select * from sysusers in the master database they all show the same sid?

dbo 0x04EB1BD4B662E84EA2F014F4691D18E7
guest 0x04EB1BD4B662E84EA2F014F4691D18E7
BUILTIN\Administrators 0x04EB1BD4B662E84EA2F014F4691D18E7

And so on...

Is there a way to correct this? I'm not sure this is normal or not?

Thanks for your time.