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:"/supershell/login/"; depth:18; nocase; http.host; content:"8.137.155.113"; depth:13; isdataat:!1,relative; reference:url, threatfox.abuse.ch/ioc/1783722/; target:src_ip; metadata:confidence_level 100, first_seen 2026_04_11; classtype:trojan-activity; sid:91783722; rev:1;)