alert http any any -> $HOME_NET any (msg:"ET EXPLOIT ASUS RT N56U Router DNS Change GET Request 3"; flow:to_server,established; http.method; content:"GET"; http.uri; content:"/start_apply.htm?"; fast_pattern; content:"dnsserver="; distance:0; content:"&dnsserver2="; distance:0; reference:url,securityevaluators.com/knowledge/case_studies/routers/asus_rtn56u.php; classtype:attempted-admin; sid:2020871; rev:4; metadata:created_at 2015_04_09, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_05_21;)