Re: Back Orifice
Back Orifice didn't require Back Office to work, I think it was actually designed to emulate MSBO in terms of remote administration(RA) of machines. BO just did it on the sly; there were extensions like Silk Rope that would bundle the BO Server into other executables, so that it would install when the victim ran the tainted .exe.
If if properly configured it was a great RA tool, using strong (for the 90's) encryption and could be set to use authentication. I used it as a free RA tool for several machines.
Admittedly, I did use it on some machines that were not mine, as well.