ET MALWARE Win32/Emotet CnC Activity (POST) M11

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Win32/Emotet CnC Activity (POST) M11";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:!".";
    content:!"&";
    content:!"-";
    http.user_agent;
    content:"Mozilla/4.0|20|(compatible|3b 20|MSIE|20|7.0|3b 20|Windows|20|NT|20|6"; startswith;
    http.request_body;
    content:!".zip";
    content:!".png";
    content:!".jp";
    content:!".exe";
    content:"--|00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00|"; fast_pattern;
    http.content_len;
    byte_test:0,<,8000,0,string,dec;
    byte_test:0,>,500,0,string,dec;
    http.header_names;
    content:"|0d 0a|Accept|0d 0a|Accept-Encoding|0d 0a|DNT|0d 0a|Connection|0d 0a|"; startswith;
    content:"Referer|0d 0a|";
    reference:md5,f4b00ffce71b197865071073dec5068d;
    classtype:trojan-activity;
    sid:2035077; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2020_10_14, deployment Perimeter, malware_family Win32_Emotet, performance_impact Significant, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_05_19;
)