ET MALWARE Possible ReactorBot .bin Download

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Possible ReactorBot .bin Download";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:"/cgi/";
    content:".bin"; fast_pattern; endswith;
    pcre:"/\/cgi\/[a-z0-9]{1,31}\.bin$/";
    http.header;
    content:!"AskTbARS";
    http.host;
    content:!".passport.net"; endswith;
    content:!".microsoftonline-p.net"; endswith;
    content:!".symantec.com"; endswith;
    content:!".qq.com"; endswith;
    content:!"kankan.com"; endswith;
    content:!"aocdn.net";
    http.header_names;
    content:!"Referer|0d 0a|";
    content:!"Accept-Language|0d 0a|";
    classtype:trojan-activity;
    sid:2022841; rev:5;
    metadata:created_at 2016_05_27, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_10_30;
)