alert http $EXTERNAL_NET $HTTP_PORTS -> $HOME_NET any (msg:"ET HUNTING Suspicious Response (MS-Officecmd)"; flow:established,to_client; http.response_body; content:"ms-officecmd|3a|"; nocase; content:"LaunchOfficeAppForResult"; nocase; distance:0; fast_pattern; reference:url,positive.security/blog/ms-officecmd-rce; classtype:attempted-admin; sid:2034628; rev:2; metadata:attack_target Client_Endpoint, created_at 2021_12_07, deployment Perimeter, confidence Medium, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_04_06;)