ET MALWARE Zbot POST Request to C2

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Zbot POST Request to C2";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:".php";
    http.header;
    content:"Accept|3a 20|*/*|0d 0a|User-Agent|3a 20|Mozilla"; depth:32; fast_pattern;
    pcre:"/(?:Proxy-)?Connection\x3a[^\r\n]+?\r\n(?:Pragma|Cache-Control)\x3a[^\r\n]+?\r\n(?:\r\n)?$/";
    http.header_names;
    content:"|0d 0a|Accept|0d 0a|User-Agent|0d 0a|Host|0d 0a|Content-Length|0d 0a|"; depth:44;
    content:!"Accept-";
    content:!"Content-Type|0d 0a|";
    content:!"Referer|0d 0a|";
    reference:md5,c86f7ec18b78055a431f7cd1dca65b82;
    classtype:command-and-control;
    sid:2019141; rev:6;
    metadata:created_at 2014_09_09, performance_impact Moderate, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_08;
)