alert http $HOME_NET any -> $EXTERNAL_NET any (
msg:"ET PHISHING Successful Canada Revenue Agency COVID-19 Assistance Eligability Phish 2020-04-01";
flow:established,to_server;
content:"|0d 0a 0d 0a|FN="; fast_pattern;
http.method;
content:"POST";
http.request_body;
content:"FN="; depth:3;
content:"&SN="; distance:0;
content:"&submit=Start+Process"; nocase; distance:0;
classtype:credential-theft;
sid:2029782; rev:2;
metadata:affected_product Web_Browsers, attack_target Client_Endpoint, created_at 2020_04_01, deployment Perimeter, confidence High, signature_severity Critical, tag Phishing, updated_at 2020_04_01, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1566, mitre_technique_name Phishing;
)