ET MALWARE Suspicious Accept-Language HTTP Header zh-cn likely Kernelbot/Conficker Trojan Related

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Suspicious Accept-Language HTTP Header zh-cn likely Kernelbot/Conficker Trojan Related";
    flow:established,to_server;
    flowbits:set,ET.ms08067_header;
    flowbits:noalert;
    http.header;
    content:"Accept-Language|3A 20|zh|2D|cn";
    classtype:not-suspicious;
    sid:2008738; rev:10;
    metadata:created_at 2010_07_30, signature_severity Major, updated_at 2020_08_06;
)