alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET PHISHING Webmail Account Upgrade Phishing Landing 2016-07-20"; flow:from_server,established; http.stat_code; content:"200"; http.content_type; content:"text/html"; startswith; file.data; content:"<title>|3a 3a|WEBMAIL"; nocase; fast_pattern; content:"Sign in to Update Your Account"; nocase; distance:0; content:"Email"; nocase; distance:0; content:"Password"; nocase; distance:0; content:"Webmail Admin"; nocase; distance:0; classtype:social-engineering; sid:2032031; rev:3; metadata:attack_target Client_Endpoint, created_at 2016_07_21, deployment Perimeter, performance_impact Low, confidence Medium, signature_severity Major, tag Phishing, updated_at 2020_07_20;)