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:"/vkd"; depth:4; nocase; http.host; content:"phrupmv.su"; depth:10; isdataat:!1,relative; reference:url, threatfox.abuse.ch/ioc/1687879/; target:src_ip; metadata:confidence_level 75, first_seen 2025_12_29; classtype:trojan-activity; sid:91687879; rev:1;)