This file, lzx32.sys, alias Backdoor.Rustock.B, is a rootkit and may be hiding other files, processes, and registry entries on your computer.
It is strongly advised if you find this file on your computer that you post a HijackThis log.
Post a Hijack This Log in the Hijack This Forum by following the directions in the link below if the programs above have not removed ALL malware. DO NOT post a log in this forum. http://www.bleepingcomputer.com/forums/t/34773/preparation-guide-for-use-before-using-malware-removal-tools-and-requesting-help/
Any malware with with "backdoor" in its description can completely compromise your computer. It is suggested that you change ALL passwords using another computer. Monitor all banking, credit cards, pay pal, etc.