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:"/ws/client"; depth:10; nocase; http.host; content:"212.162.150.121"; depth:15; isdataat:!1,relative; reference:url, threatfox.abuse.ch/ioc/1780003/; target:src_ip; metadata:confidence_level 100, first_seen 2026_04_01; classtype:trojan-activity; sid:91780003; rev:1;)