alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET HUNTING Suspicious User-Agent 100 non-printable char"; flow:established,to_server; http.user_agent; bsize:>99; pcre:"/^([\x7f-\xff]){100}/Ri"; reference:md5,176638536e926019e3e79370777d5e03; classtype:pup-activity; sid:2017982; rev:5; metadata:affected_product Any, attack_target Client_Endpoint, created_at 2014_01_17, deployment Perimeter, confidence Medium, signature_severity Major, tag User_Agent, updated_at 2024_03_02;)