ET PHISHING Successful Phishing Attempt via GetGoPhish Phishing Tool

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET PHISHING Successful Phishing Attempt via GetGoPhish Phishing Tool";
    flow:to_server,established;
    http.method;
    content:"POST";
    http.header;
    content:"?rid="; fast_pattern;
    pcre:"/\?rid=[a-f0-9]{64}\x0d\x0a/i";
    http.host;
    content:!"xerox.com"; endswith;
    reference:url,getgophish.com;
    classtype:credential-theft;
    sid:2022487; rev:5;
    metadata:attack_target Client_Endpoint, created_at 2016_02_03, deployment Perimeter, confidence Medium, signature_severity Critical, tag Phishing, updated_at 2020_09_16, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1566, mitre_technique_name Phishing;
)