ET MALWARE JS/GootLoader Activity M2 (GET)

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE JS/GootLoader Activity M2 (GET)";
    flow:established,to_server;
    urilen:11;
    http.method;
    content:"GET";
    http.uri;
    content:"/xmlrpc.php"; fast_pattern;
    http.header_names;
    content:!"Referer";
    http.cookie;
    pcre:"/^[A-Za-z0-9/=+\x3b\x20]{1000,}$/";
    reference:md5,88c6ced73d12d490a0fd10c6eac5aa6f;
    reference:url,securityintelligence.com/x-force/gootbot-gootloaders-new-approach-to-post-exploitation/;
    classtype:trojan-activity;
    sid:2050897; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2024_02_16, deployment Perimeter, deployment SSLDecrypt, malware_family JS_GootLoader, performance_impact Moderate, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_02_16;
    target:src_ip;
)