alert http $EXTERNAL_NET any -> $HOME_NET any (
msg:"ET WEB_CLIENT Tech Support Scam 2019-11-14";
flow:established,to_client;
http.stat_code;
content:"200";
file.data;
content:"<title>Official Windows Notification"; nocase; fast_pattern;
content:"Call Windows Technical Support"; nocase; distance:0;
classtype:social-engineering;
sid:2028971; rev:2;
metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2019_11_14, deployment Perimeter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_10_21;
)