alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE VBA/Agent.AAV CnC Checkin"; flow:established,to_server; http.request_line; content:"POST|20|/send_data"; http.request_body; content:"|7b 22|mac|22 3a 22|"; startswith; fast_pattern; content:"|22 2c 22|localip|22 3a 22|"; distance:17; content:"|22 2c 22|comname|22 3a 22|"; distance:0; content:"|22 2c 22|os|22 3a 22|"; distance:0; reference:md5,d03c30ddf732cadd8c1ad6cba076508b; classtype:command-and-control; sid:2039189; rev:1; metadata:attack_target Client_Endpoint, created_at 2022_10_12, deployment Perimeter, malware_family VBA_Agent_AAV, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_10_12;)