This is a trojan detection. Unlike viruses, trojans do not self-replicate. They are spread manually, often under the premise that they are beneficial or wanted. The most common installation methods involve system or security exploitation, and unsuspecting users manually executing unknown programs. Distribution channels include email, malicious or hacked web pages, Internet Relay Chat (IRC), peer-to-peer networks, etc.
Indication of Infection
Unfamiliar and altered default start page when loading Internet Explorer.
Methods of Infection
This trojan exists as script code contained in an .ASP, .HTM, .HTML, .VBS, .VBE, or .HTA file.
FunChina, JS/IEStart.gen.c, JS/IEStart.gen.d, VBS.Passon (CA), VBS.PassOn (NAV), VBS/IEstart.gen