alert http $EXTERNAL_NET any -> $HOME_NET any (
msg:"ET PHISHING Mailbox Update Phishing Landing M2 2016-05-16";
flow:from_server,established;
http.stat_code;
content:"200";
http.content_type;
content:"text/html"; startswith;
file.data;
content:"Email Upgrade</title>"; nocase; fast_pattern;
content:"Confirm your account"; nocase; distance:0;
content:"Mail Administrator"; nocase; distance:0;
classtype:social-engineering;
sid:2025676; rev:3;
metadata:attack_target Client_Endpoint, created_at 2016_05_16, deployment Perimeter, confidence Medium, signature_severity Major, tag Phishing, updated_at 2020_07_10;
)