For details regarding this issue please refer to the following web page.
http://securityresponse.symantec.com/avcenter/venc/data/backdoor.irc.loonbot.html
OR
http://tinyurl.com/33ul5
http://securityresponse.symantec.com/avcenter/venc/data/backdoor.irc.loonbot.html
OR
http://tinyurl.com/33ul5