alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ThreatFox botnet C2 traffic (url - confidence level: 100%)"; flow:established,from_client; http.method; content:"GET"; http.uri; content:"/l1nc0in.php"; depth:12; nocase; http.host; content:"cu603691.tw1.ru"; depth:15; isdataat:!1,relative; reference:url, threatfox.abuse.ch/ioc/1782003/; target:src_ip; metadata:confidence_level 100, first_seen 2026_04_06; classtype:trojan-activity; sid:91782003; rev:1;)