ET MALWARE DiamondFox HTTP Post CnC Checkin M3

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE DiamondFox HTTP Post CnC Checkin M3";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"/gate.php"; endswith; fast_pattern;
    http.content_type;
    content:"application/x-www-form-urlencoded";
    http.request_body;
    content:"="; offset:3; depth:1;
    content:"&q="; distance:0;
    content:"&proc="; distance:0;
    content:"&soft="; distance:0;
    content:"&rt="; distance:0;
    content:"&er="; distance:0;
    isdataat:!2,relative;
    http.header_names;
    content:!"Referer";
    reference:url,twitter.com/ViriBack/status/1203337492386082816;
    reference:md5,17a1f7e98731df9b74b98accb650d50e;
    classtype:command-and-control;
    sid:2029144; rev:3;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2019_12_12, deployment Perimeter, malware_family DiamondFox, performance_impact Moderate, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_12_18;
)