alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET PHISHING Successful Outlook Password Update Phish M3 2016-09-01"; flow:to_client,established; http.stat_code; content:"200"; http.content_type; content:"text/html"; startswith; file.data; content:"<title>Change password"; nocase; fast_pattern; content:"Outlook WebApp"; nocase; distance:0; content:"O365_MainLink"; nocase; distance:0; content:"Remember your new password"; nocase; distance:0; content:"close this browser"; nocase; distance:0; classtype:credential-theft; sid:2032074; rev:3; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2016_09_01, deployment Perimeter, confidence Medium, signature_severity Critical, tag Phishing, updated_at 2020_07_27, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1566, mitre_technique_name Phishing;)