ET POLICY XenArmor Password Recovery License Check

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET POLICY XenArmor Password Recovery License Check";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:"/xen-check-portable-license.php?key="; fast_pattern;
    http.user_agent;
    content:"Software License Checker"; bsize:24;
    http.header_names;
    content:!"Referer";
    classtype:policy-violation;
    sid:2030616; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_07_30, deployment Perimeter, confidence High, signature_severity Minor, updated_at 2020_07_30;
)