alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"URLhaus Known malware download URL detected (3876959)"; flow:established,from_client; http.method; content:"GET"; http.uri; content:"/load/os1/u1.exe"; depth:16; endswith; nocase; http.host; content:"kuilfgfd.cc"; depth:11; isdataat:!1,relative; metadata:created_at 2026_06_27; reference:url, urlhaus.abuse.ch/url/3876959/; classtype:trojan-activity; sid:84740059; rev:1;)