alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"URLhaus Known malware download URL detected (3858690)"; flow:established,from_client; http.method; content:"GET"; http.uri; content:"/.well-known/acme-challenge/img_20260531_214059_714.png"; depth:55; endswith; nocase; http.host; content:"kits.frog.tw"; depth:12; isdataat:!1,relative; metadata:created_at 2026_06_04; reference:url, urlhaus.abuse.ch/url/3858690/; classtype:trojan-activity; sid:84721790; rev:1;)