alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET PHISHING Successful Outlook Webmail Phishing 2015-11-21"; flow:established,from_server; file_data; content:"<title>Outlook"; fast_pattern; nocase; content:"http-equiv=|22|refresh"; nocase; distance:0; content:"Update successful"; nocase; distance:0; content:"your account verification information"; nocase; distance:0; content:"emailed to you shortly"; nocase; distance:0; classtype:credential-theft; sid:2031703; rev:2; metadata:attack_target Client_Endpoint, created_at 2015_11_21, deployment Perimeter, confidence Medium, signature_severity Critical, tag Phishing, updated_at 2019_07_26, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1566, mitre_technique_name Phishing;)