alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE MUROFET/Licat Trojan"; flow:established,to_server; http.method; content:"GET"; nocase; http.uri; content:"/news/?s="; fast_pattern; pcre:"/^\d{1,6}$/R"; http.header_names; content:!"Referer"; reference:url,extraexploit.blogspot.com/2010/10/some-domains-for-licatmurofettrojanzbot.html; classtype:trojan-activity; sid:2011825; rev:11; metadata:created_at 2010_10_18, signature_severity Major, updated_at 2020_10_28;)