ET MALWARE MyKings Bootloader Variant Requesting Payload M2

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE MyKings Bootloader Variant Requesting Payload M2";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:"/ok/vers.html"; startswith; fast_pattern; endswith;
    http.accept;
    content:"*/*"; startswith; endswith;
    http.header_names;
    content:!"Referer";
    content:!"User-Agent";
    content:!"Cache";
    content:!"Accept-";
    reference:url,blog.trendmicro.com/trendlabs-security-intelligence/uncovering-a-mykings-variant-with-bootloader-persistence-via-managed-detection-and-response/;
    classtype:trojan-activity;
    sid:2027901; rev:3;
    metadata:created_at 2019_08_21, malware_family Mirai, malware_family MyKings, confidence High, signature_severity Major, updated_at 2020_09_17;
)