Infamous Worms

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Are the most infamous recent worms still at large?

They are Conficker, Koobface, and perhaps even VBMania.

I know Conficker spread rogues early on, but does it still spread them if it is widespread, and are the rogues that it does spread old now?

What does Koobface do (something to do with Facebook for sure), but what is its payload, and that of VBMania?

Thanks,

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