alert http $EXTERNAL_NET any -> $HOME_NET any (
msg:"ET PHISHING EvilProxy AiTM Cookie Value M2";
flow:established,to_client;
content:"Server|3a 20|nginx/";
content:"|0d 0a 0d 0a 7b 22|statusCode|22 3a 20 22|success|22 2c 20 22|cookieKey|22 3a 20 22|"; fast_pattern;
content:"|22 2c 20 22|cookieDomain|22 3a 20 22|"; distance:4; within:21;
content:"|22 2c 20 22|cookieValue|22 3a 20 22|"; distance:0;
pcre:"/^(?:[A-Za-z0-9+/]{4})*(?:[A-Za-z0-9+/]{2}==|[A-Za-z0-9+/]{3}=|[A-Za-z0-9+/]{4})\x22\x7d$/R";
reference:url,boredhackerblog.info/2022/11/looking-for-evilproxy-notes.html;
classtype:social-engineering;
sid:2043332; rev:1;
metadata:created_at 2023_01_17, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_01_17, reviewed_at 2025_10_24;
)