Let us know what you come up with. I’d be interested.
I can tell you the gist of what it does though. It interferes with some basic system files (I have no idea which ones, or how this stuff works) to re-direct you (apparently) to the Yahoo search engine, even if you go to ‘Manage Add-ons’ and remove everything except, say, Google, as I did. Then it forces any searches you perform to go to websites that you didn’t intend to go to, for commercial purposes. Clicks while surfing don’t do what you expect. So, for instance, me pressing ‘cancel’ took me perilously close to paying for something by Paypal! Something I hadn’t searched for at all. It’s a nasty little bit of virus kit it is. I have a feeling it’s fairly long established. Something I read suggested that its first incarnations may have been about 2009.
Ah. Yeap. Nasty little bugger, that one. Tends to embed itself in freeware installs.
As for what to look out for… well, be careful of your software sources. Sometimes it pays to do custom installs and look for any add-ons you don’t need.