alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ThreatFox botnet C2 traffic (url - confidence level: 50%)"; flow:established,from_client; http.method; content:"GET"; http.uri; content:"/"; depth:1; nocase; http.host; content:"nids13.dynv6.net"; depth:16; isdataat:!1,relative; reference:url, threatfox.abuse.ch/ioc/1755377/; target:src_ip; metadata:confidence_level 50, first_seen 2026_02_27; classtype:trojan-activity; sid:91755377; rev:1;)