alert http $HOME_NET any -> $EXTERNAL_NET any (
msg:"ET PHISHING Successful Generic Webmail Phish M1 2016-11-18";
flow:to_server,established;
http.method;
content:"POST";
http.request_body;
content:"acc3="; depth:5; nocase;
content:"&acc1="; nocase; distance:0; fast_pattern;
content:"&acc2="; nocase; distance:0;
content:"&isUtf8="; nocase; distance:0;
classtype:credential-theft;
sid:2032263; rev:4;
metadata:affected_product Web_Browsers, attack_target Client_Endpoint, created_at 2016_11_18, deployment Perimeter, confidence Medium, signature_severity Critical, tag Phishing, updated_at 2020_08_10, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1566, mitre_technique_name Phishing;
)