alert http $HOME_NET any -> $EXTERNAL_NET any (
msg:"ET PHISHING GET Request to Appspot Hosting (set)";
flow:established,to_server;
flowbits:set,ET.appspothosted;
flowbits:noalert;
http.method;
content:"GET";
http.host;
content:".appspot.com"; fast_pattern; endswith;
classtype:social-engineering;
sid:2030709; rev:2;
metadata:affected_product Web_Browsers, attack_target Client_Endpoint, created_at 2020_08_21, deployment Perimeter, confidence Medium, signature_severity Minor, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_08_21;
)