alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET PHISHING Successful Webmail Phish 2015-08-27"; flow:established,to_server; http.method; content:"POST"; http.uri; content:".php"; endswith; http.request_body; content:"email="; startswith; fast_pattern; content:"&passwd="; distance:0; content:"&Upgrade="; nocase; distance:0; classtype:credential-theft; sid:2031888; rev:8; metadata:affected_product Web_Browsers, attack_target Client_Endpoint, created_at 2015_08_27, deployment Perimeter, confidence Medium, signature_severity Critical, tag Phishing, updated_at 2024_04_13, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1566, mitre_technique_name Phishing;)