alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET PHISHING Microsoft Phish Landing Page M1 2026-01-22"; flow:established,to_client; http.stat_code; content:"200"; http.response_body; content:"<title>"; content:"Update Microsoft Teams to Join Meeting"; distance:0; content:"</title>"; distance:0; content:"<script>"; distance:0; content:".msi"; distance:0; fast_pattern; content:"</script>"; distance:0; classtype:social-engineering; sid:2066988; rev:1; metadata:attack_target Client_Endpoint, created_at 2026_01_22, deployment Perimeter, deployment SSLDecrypt, performance_impact Moderate, confidence High, signature_severity Major, tag Phishing, updated_at 2026_01_22, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1566, mitre_technique_name Phishing;)