alert http $HOME_NET any -> any any (msg:"AT related malicious URL (onixone.com.co/UPDATE)"; flow:established,to_server; http.uri; content:"/UPDATE"; startswith; fast_pattern; http.host; content:"onixone.com.co"; endswith; reference:url,openphish.com; reference:url,julioliraup.github.io/AT/signature.html?sid=6015538; classtype:social-engineering; sid:6015538; rev:1; metadata:signature_severity Major, created_et 2026_09_01;)