alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ThreatFox botnet C2 traffic (url - confidence level: 75%)"; flow:established,from_client; http.method; content:"GET"; http.uri; content:"/koekoef"; depth:8; nocase; http.host; content:"t.me"; depth:4; isdataat:!1,relative; reference:url, threatfox.abuse.ch/ioc/1781220/; target:src_ip; metadata:confidence_level 75, first_seen 2026_04_04; classtype:trojan-activity; sid:91781220; rev:1;)