ET PHISHING Successful HM Revenue Phish 2016-11-23

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET PHISHING Successful HM Revenue Phish 2016-11-23";
    flow:to_server,established;
    http.method;
    content:"POST";
    http.uri;
    content:".php?form=Tax"; nocase;
    content:"&sslchannel="; nocase; distance:0;
    content:"&sessionid="; nocase; distance:0;
    content:"&securessl="; nocase; distance:0;
    http.header;
    content:".php?form=Tax"; nocase;
    content:"&sslchannel="; nocase; distance:0;
    content:"&sessionid="; nocase; distance:0;
    http.request_body;
    content:"form-data|3b 20|name=|22|ccname|22|"; nocase;
    content:"form-data|3b 20|name=|22|ccno|22|"; nocase;
    content:"form-data|3b 20|name=|22|ccexp|22|"; nocase; fast_pattern;
    http.content_type;
    content:"multipart/form-data|3b|"; startswith;
    classtype:credential-theft;
    sid:2032193; rev:3;
    metadata:affected_product Web_Browsers, attack_target Client_Endpoint, created_at 2016_11_23, deployment Perimeter, confidence Medium, signature_severity Critical, tag Phishing, updated_at 2020_08_03, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1566, mitre_technique_name Phishing;
)