alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET EXPLOIT_KIT Possible Malvertising EK Redirect to EK M2"; flow:established,to_server; http.method; content:"GET"; http.uri; content:".asp?id="; isdataat:!5,relative; http.accept_enc; content:"gzip, deflate"; depth:13; endswith; http.referer; content:".php?JBOSSESSION="; fast_pattern; classtype:exploit-kit; sid:2025913; rev:3; metadata:affected_product Web_Browsers, attack_target Client_Endpoint, created_at 2018_07_26, deployment Perimeter, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_09_16;)