alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ThreatFox payload delivery (url - confidence level: 100%)"; flow:established,from_client; http.method; content:"GET"; http.uri; content:"/ext-b.b83518636a91.js"; depth:22; nocase; http.host; content:"silentport.cyou"; depth:15; isdataat:!1,relative; reference:url, threatfox.abuse.ch/ioc/1793778/; target:src_ip; metadata:confidence_level 100, first_seen 2026_04_17; classtype:trojan-activity; sid:91793778; rev:1;)