ok, so here's an official response, i'm the developer of pimpbot. at the time when the recapture suite was used, pimpbot still used a header compression called upack. this compressor has two problems: 1. it's not open source and 2. it's used by a lot of true malware. combined, that's the reason why a lot of antivirus software treats as malware, even if it's not. since upack isn't open source, it's not very easy for software developers to interpret it.
anyway, all later pimpbot installers use the open source upx compressor. a couple of tests on virustotal showed there hasn't been a single false positive. we at visbot always made sure our installers are clean, and your antivirus software likely found a false positive.
as i wouldn't want to rely on a word by a stranger, feel invited to download the recapture suite from the
visbot website. all installers on the site are using the latest pimpbot version. unfortunately, i cannot force individual visbot members to update the installers they submit to winamp.com on their own (i tried, though!)
hope this clears up the situation!