Hi,
the vanitygen windows binary hosted at http://www.bitcointrading.com/files/vanitygen-0.17-win.zip is infected with malware!
https://www.virustotal.com/en/file/326f4695a2983b42e61996b904ef6d217cdf26a6968a86d14a7818fec0ad7ac4/analysis/1396505046/
Beware, as more recent versions of the binary could be infected, too.
I didn't find out the purpose of the trojan but I think it runs a mining tool in the background.
Maybe someone is able to do a more detailed analysis to identify infected systems as the trojan comes with rootkit functionality (http://www.yac.mx/en/guides/trojan-horse-guides/20140225-how-to-remove-Trojan/Achet.N.2-through-yac-virus-removal-tool.html).
Cheers!