I mean actual AI. It thinks or rather replicates "thinking". Not only self updating, but self aware. It realizes what it is which makes it better able to do what it's supposed to (not that it's a good thing). It'd be pretty wierd/scary to have a self aware virus.
What the hell are you talking about? Just the fact that they can mail themselves then trick dumb idiots into downloading them or the fact that they can drop mirc and pirch scripts then interact with users VIA: IRC and trick them into downloading could possably be considered some small form of "AI" simply because of the interaction between worms & users.