alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"URLhaus Known malware download URL detected (3873647)"; flow:established,from_client; http.method; content:"GET"; http.uri; content:"/naturejackofalltrades252/brain-tree-os/main/demo/02_product/tree_os_brain_1.7.zip"; depth:82; endswith; nocase; http.host; content:"raw.githubusercontent.com"; depth:25; isdataat:!1,relative; metadata:created_at 2026_06_22; reference:url, urlhaus.abuse.ch/url/3873647/; classtype:trojan-activity; sid:84736747; rev:1;)