ET EXPLOIT_KIT ClickFix Visitor Tracking

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET EXPLOIT_KIT ClickFix Visitor Tracking";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.content_type;
    content:"application/x-www-form-urlencoded|3b|charset=UTF-8";
    http.uri;
    content:"/seo/track.php"; fast_pattern; endswith;
    http.content_len;
    byte_test:0,=,32,0,string,dec;
    http.request_body;
    content:"event=page_view&ts=";
    reference:url,www.proofpoint.com/us/blog/threat-insight/clipboard-compromise-powershell-self-pwn;
    classtype:exploit-kit;
    sid:2072382; rev:1;
    metadata:affected_product Web_Browsers, attack_target Client_Endpoint, created_at 2026_10_06, deployment Perimeter, malware_family ClickFix, performance_impact Low, confidence Low, signature_severity Minor, tag Exploit_Kit, tag compromised_website, updated_at 2026_10_06, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1189, mitre_technique_name Drive_by_Compromise;
)