Hidden Installation – Kaspersky

Hey guys,
i just downloaded some portable appz, and a Office keygen..
is it normal with those apz (exept the keygen >.<)
that there is a HIDDEN INSTALL in the portable?
Answer #1
There is no hidden installation, it doesn’t install it just runs from a destination if this answers your question?
Answer #2
well,
kaspersky gives me a warning for a Hidden Installation, similiar to Trojan installers or something
Answer #3
then it is probably some kind of malware