ET WEB_CLIENT HTA File Download Flowbit Set

alert http $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET WEB_CLIENT HTA File Download Flowbit Set";
    flow:established,to_client;
    flowbits:set,et.http.hta;
    flowbits:noalert;
    http.content_type;
    content:"application/hta"; fast_pattern; startswith;
    classtype:not-suspicious;
    sid:2024195; rev:3;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2017_04_10, deployment Perimeter, performance_impact Low, confidence Medium, signature_severity Major, updated_at 2020_08_05;
)