It's reported as "VBS:Malware [Script]", and it's reported on every web page that is visited (every cached web page as well).
Proxomitron is prepending the following on every page:
<!--//--><script>var PrxLC=new Date(0);var PrxModAtr=0;var PrxInst; if(!PrxInst++) PrxRealOpen=window.open;function PrxOMUp(){PrxLC=new Date();}function PrxNW(){return(this.window);} function PrxOpen(url,nam,atr){ if(PrxLC){ var cdt=new Date(); cdt.setTime(cdt.getTime()-PrxLC.getTime()); if(cdt.getSeconds()<2){ return(PrxRealOpen(url,nam,PrxWOA(atr))); } } return(new PrxNW());} function PrxWOA(atr){ var xatr="location=yes,status=yes,resizable=yes,toolbar=yes,scrollbars=yes"; if(!PrxModAtr) return(atr); if(atr){ var hm; hm=atr.match(/height=[0-9]+/i); if(hm) xatr+="," + hm; hm=atr.match(/width=[0-9]+/i); if(hm) xatr+="," + hm; } return(xatr);}window.open=PrxOpen;</script>
<!--//--><script> function NoError(){return(true);} onerror=NoError; </script>
<!--//--><script> function moveTo(){return true;}function resizeTo(){return true;}</script>
and it is appending this on every page:
<!--//--><script>if(document.layers){document.captureEvents(Event.MOUSEUP);}document.onmouseup=PrxOMUp;</script>
I never gave it much thought, as it's such a good ad blocker. With Avast now reporting every single web page a potentially infected, it's a pain.
j