alert http $EXTERNAL_NET any -> $HOME_NET any (
msg:"ET WEB_CLIENT Fake Virus Phone Scam Landing Mar 9 M2";
flow:to_client,established;
http.stat_code;
content:"200";
http.content_type;
content:"text/html"; startswith;
file.data;
content:"function myFunction"; nocase; fast_pattern;
content:"MICROSOFT COMPUTER HAS BEEN BLOCKED"; nocase; distance:0;
content:"Windows System Alert"; nocase; distance:0;
content:"Contact Microsoft"; nocase; distance:0;
classtype:social-engineering;
sid:2022608; rev:4;
metadata:created_at 2016_03_09, confidence High, signature_severity Minor, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_09_01;
)