alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET PHISHING GhostFrame Landing Page Loader Request 2026-01-05"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/first-landers"; startswith; fast_pattern; http.host; pcre:"/^[a-z0-9]{32}\.(autum\.sbs|spectrel-a\.biz)/i"; reference:url,blog.barracuda.com/2025/12/04/threat-spotlight-ghostframe-phishing-kit; classtype:social-engineering; sid:2066591; rev:1; metadata:attack_target Client_Endpoint, created_at 2026_01_05, deployment Perimeter, signature_severity Major, tag Phishing, tag GhostFrame, updated_at 2026_01_06, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1566, mitre_technique_name Phishing;)