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;)