alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET PHISHING Possible Successful Tripod.com Phish 2016-03-31"; flow:to_server,established; http.method; content:"POST"; http.uri; content:".ajax?m="; content:"&type=Form"; distance:0; content:"&a=addResponse"; distance:0; http.header; content:".tripod.com/|0d 0a|"; http.request_body; content:"data%5Bresponse%5D"; depth:18; fast_pattern; content:"&data%5Bresponse%5D"; distance:0; content:"&data%5Bresponse%5D"; distance:0; pcre:"/=[A-Za-z0-9._+-]+%40[A-Za-z0-9.-]+\.[A-Za-z]{2,6}&data/"; classtype:credential-theft; sid:2031980; rev:3; metadata:attack_target Client_Endpoint, created_at 2016_03_31, deployment Perimeter, confidence Medium, signature_severity Critical, tag Phishing, updated_at 2020_06_30, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1566, mitre_technique_name Phishing;)