alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET HUNTING HTTP POST to .php on Appspot Hosting - Possible Phishing"; flow:established,to_server; http.method; content:"POST"; http.uri; content:".php"; isdataat:!1,relative; http.host; content:".appspot.com"; isdataat:!1,relative; fast_pattern; classtype:misc-activity; sid:2030708; rev:2; metadata:affected_product Web_Browsers, attack_target Client_Endpoint, created_at 2020_08_21, deployment Perimeter, confidence Medium, signature_severity Critical, tag Phishing, updated_at 2020_08_21, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1566, mitre_technique_name Phishing;)