My games and multimedia PC has twice now been infected with a virus that loads an executable called Ahnrpta.exe. This is with me being the only user and literally not downloading anything and not receiving any email on it.
I know my housemate has this virus on his laptop (he keeps telling me he'll get some antivirus) so I suspect it's coming from there (we use the same home network). The strange thing is though my work laptop which I use on the same network quite frequently has not been infected.
Both my work laptop and my games PC run WinXP and have no firewall other than the WinXP SP2 firewall.
Does anyone know how this virus spreads? I haven't been able to find a definitive answer from the antivirus vendor sites.