ET MALWARE Win32.Raccoon Stealer Checkin M6

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Win32.Raccoon Stealer Checkin M6";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.header_names;
    content:"|0d 0a|Cache-Control|0d 0a|Connection|0d 0a|Pragma|0d 0a|Content-Type|0d 0a|Content-Length|0d 0a|Host|0d 0a 0d 0a|"; bsize:75;
    http.content_type;
    content:"text/plain|3b 20|charset=UTF-8"; bsize:25;
    http.request_body;
    content:"T7"; startswith; fast_pattern;
    pcre:"/^(?:[a-zA-Z0-9+/]{4})*(?:[a-zA-Z0-9+/]{2}==|[a-zA-Z0-9+/]{3}=|[a-zA-Z0-9+/]{4})$/";
    reference:md5,108757a3cc9c5e9d529ca1a94f1432b2;
    classtype:command-and-control;
    sid:2035177; rev:2;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_02_11, deployment Perimeter, deployment SSLDecrypt, malware_family Raccoon_Stealer, performance_impact Moderate, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_02_11;
)