luproxy could be a Proxy like the perl script luproxy or the Java proxy ORBProxy. It could also be an AUTOLOAD script in perl that has been rewriten and compiled as an executable. This may not be malware or a virus but just a bad example of coding that uses your browser. Try tracking the process using Hijackthis. Many legit and proven malware use code that is open source and rewriten.
luproxy.exe