alert http any any -> $EXTERNAL_NET any (msg:"ET MALWARE Possible Bobax trojan infection"; flow:established,to_server; http.method; content:"GET"; nocase; http.uri; content:"/reg|3f|u="; fast_pattern; content:"|26|v="; reference:url,www.lurhq.com/bobax.html; classtype:trojan-activity; sid:2001901; rev:11; metadata:created_at 2010_07_30, confidence Medium, signature_severity Major, updated_at 2024_03_16;)