alert http $EXTERNAL_NET any -> $HOME_NET any (
msg:"ET WEB_CLIENT Microsoft Tech Support Phone Scam M3 Jul 07 2017";
flow:established,to_client;
http.stat_code;
content:"200";
http.content_type;
content:"text/html"; startswith;
file.data;
content:"<title>"; nocase;
content:"virus warning alert"; nocase; within:50; fast_pattern;
classtype:social-engineering;
sid:2024446; rev:4;
metadata:affected_product Web_Browsers, attack_target Client_Endpoint, created_at 2017_07_07, deployment Perimeter, confidence High, signature_severity Minor, tag Tech_Support_Scam, updated_at 2020_09_01;
)