alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ThreatFox payload delivery (url - confidence level: 90%)"; flow:established,from_client; http.method; content:"GET"; http.uri; content:"/"; depth:1; nocase; http.host; content:"captcha-online.live"; depth:19; isdataat:!1,relative; reference:url, threatfox.abuse.ch/ioc/1687891/; target:src_ip; metadata:confidence_level 90, first_seen 2025_12_29; classtype:trojan-activity; sid:91687891; rev:1;)