alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET DOS LOIC Javascript DDoS Outbound"; flow:established,to_server; threshold:type both, track by_src, count 5, seconds 60; http.method; content:"GET"; http.uri; content:"/?id="; fast_pattern; depth:5; content:"&msg="; distance:13; within:5; pcre:"/^\/\?id=[0-9]{13}&msg=/"; reference:url,isc.sans.org/diary/Javascript+DDoS+Tool+Analysis/12442; reference:url,www.wired.com/threatlevel/2012/01/anons-rickroll-botnet; classtype:attempted-dos; sid:2014141; rev:6; metadata:created_at 2012_01_23, signature_severity Major, updated_at 2020_05_06;)