alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"URLhaus Known malware download URL detected (3898121)"; flow:established,from_client; http.method; content:"GET"; http.uri; content:"/.well-known/acme-challenge/sma.exe"; depth:35; endswith; nocase; http.host; content:"durakutihs.com"; depth:14; isdataat:!1,relative; metadata:created_at 2026_08_06; reference:url, urlhaus.abuse.ch/url/3898121/; classtype:trojan-activity; sid:84761221; rev:1;)