alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET DELETED Neutrino EK Landing URI Format Oct 15 2013"; flow:established,to_server; content:"GET"; http_method; content:"/o"; depth:2; http_uri; content:"?h"; http_uri; pcre:"/^\/o[a-z]{4,13}\?h[a-z]{4,11}=\d{6,7}$/U"; classtype:exploit-kit; sid:2017593; rev:8; metadata:created_at 2013_10_15, signature_severity Unknown, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)