I did a search on the network tonight for the word "strata" and found these results:

!!YES!!_strata zip 296KB T1
!!YES!!_strata rar 288KB T1
!!SETUP!!_strata exe 251KB T1

which I thought a little odd.

then I did a search for "markz" and got these results:

!!YES!!_markz zip 296KB T1
!!YES!!_markz rar 288KB T1
!!SETUP!!_markz exe 251KB T1

I can only assume these files will install porn spyware or some such thing if you download them. Since I refuse to download them I can only assume.

But I think this is what you are referring to as "bogus files" or "intercepts" isn't it.