ET MALWARE Win32/IcedID Requesting Encoded Binary M4

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Win32/IcedID Requesting Encoded Binary M4";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.header.raw;
    content:"Connection|3a 20|Keep-Alive|0d 0a|Cookie|3a 20|__gads="; startswith; fast_pattern;
    http.cookie;
    content:"__gads="; startswith;
    content:"|3b 20|_gat=";
    content:"|3b 20|_ga=";
    content:"|3b 20|_u=";
    content:"|3b 20|__io=";
    content:"|3b 20|_gid=";
    pcre:"/^__gads=\d{9,10}:[01]:\d+:\d+(?::\d{2,4})?\x3b\s(?:_gat=(?:10|6)\.[0-3]\.\d{4,6}\.(?:32|64)(?:\x3b\s|$)|_ga=\d\.\d+\.\d+\.\d+(?:\x3b\s|$)|_u=(?:[0-9A-F]+\:){1,}[0-9A-F]+(?:\x3b\s|$)|__io=(?:\d{2}_\d{9,10}_\d{9,10}_\d{9,10}|[0-9])(?:\x3b\s|$)|_gid=[0-9A-F]{12}(?:\x3b\s|$)){5}/";
    http.header_names; bsize:30;
    content:"|0d 0a|Connection|0d 0a|Cookie|0d 0a|Host|0d 0a 0d 0a|";
    reference:url,sysopfb.github.io/malware,/icedid/2020/04/28/IcedIDs-updated-photoloader.html;
    classtype:command-and-control;
    sid:2030053; rev:11;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_04_29, deployment Perimeter, deployment SSLDecrypt, malware_family IcedID, performance_impact Moderate, confidence High, signature_severity Major, updated_at 2024_01_31;
)