ET EXPLOIT_KIT BottleEK Plugin Check Response

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET EXPLOIT_KIT BottleEK Plugin Check Response";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:"/conn.php?callback=?&data1="; fast_pattern;
    content:"&data2="; distance:0;
    content:"&data3="; distance:0;
    content:"&callback=JSONP_"; distance:0;
    http.cookie;
    content:"username=";
    http.accept;
    content:"application/javascript, */*|3b|q=0.8";
    classtype:exploit-kit;
    sid:2029124; rev:2;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2019_12_12, deployment Perimeter, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_10_24;
)