if ur talking about H@tKeysH@@k.dll
and im betting you are considering the volumes upon volumes of controversy around it
there is a lot of talk about this by ignorant ppl.. but really this is NOT malware.. but as the name suggests a library for hooking keypresses
there is released source code for it somewhere.. i dont remember where
however.. this library was used by a trojan(s?) and thus many avs detected it as malware
and since most ppl are unable to be sure.. the "better safe than sorry" took effect