alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET PHISHING Successful Vmware/Zimbra Phish 2015-09-28"; flow:to_server,established; http.method; content:"POST"; http.uri; content:".php?"; http.request_body; content:"username="; depth:9; fast_pattern; content:"&username"; distance:0; content:"&password="; distance:0; content:"&client="; distance:0; classtype:credential-theft; sid:2031730; rev:5; metadata:attack_target Client_Endpoint, created_at 2015_09_28, deployment Perimeter, confidence Medium, signature_severity Critical, tag Phishing, updated_at 2020_07_15, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1566, mitre_technique_name Phishing;)