alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE AstroBot CnC Activity"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/gate.php"; endswith; fast_pattern; http.request_body; content:"p="; startswith; content:"&id="; distance:0; isdataat:!20,relative; http.header_names; content:!"Referer"; reference:md5,3b6df3e900f8d0b757441fe682b91a3c; classtype:command-and-control; sid:2029233; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_01_07, deployment Perimeter, malware_family AstroBot, confidence High, signature_severity Major, updated_at 2020_01_07;)