alert http $HOME_NET any -> $EXTERNAL_NET any (
msg:"ET INFO Doc Requesting Remote Template (.dotm)";
flow:established,to_server;
flowbits:set,ETPRO.Maldoc.dotm;
http.method;
content:"GET";
http.uri;
content:".dotm"; endswith; fast_pattern;
http.user_agent;
content:"|3b 20|ms-office|3b 20|MSOffice|20|";
classtype:bad-unknown;
sid:2031379; rev:2;
metadata:attack_target Client_Endpoint, created_at 2020_12_14, deployment Perimeter, performance_impact Low, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_12_14;
)