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;)