avpu32.dll is a Trojan Backdoor.Haxdoor.ED. avpu32.dll tries to terminate antiviral programs installed on a user computer. avpu32.dll monitors user Internet activity and private information. It sends stolen data to a hacker site. Related files: %System%\avpu32.dll %System%\avpu32.sys %System%\avpu64.sys %System%\klogini.dll %System%\p3.ini %System%\qy.sys %System%\qz.dll %System%\qz.sys More info: http://www.sophos.com/virusinfo/analyses... Removal: Remove avpu32.dll from Windows startup using antivirus (also check How To Remove section)Startup Optimizer.