What is e7l6s24y4.exe? Please help

I recently seem to have removed a persistent infection of trojan ‘backdoor.hupigon’ using avg9.0 & malwarebytes malware scanner. after reinstalling avg & updating it, its id protection module was again disabled as before & i cannot enable it again. I then noticed e7l6s24y4.exe in c:\documents&settings\user1 folder. googling it led to the Prevx site where it is classed as a malware downloader, but running prevx3.0 free scan results in my pc being classified as ‘clean’. is this exe file a problem or not?