alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET PHISHING Successful Webmail Phish M3 2016-06-22"; flow:from_server,established; http.stat_code; content:"200"; http.content_type; content:"text/html"; startswith; file.data; content:"Webmail|20 3a 3a 20|Verify"; fast_pattern; nocase; content:"Online Webmail App"; nocase; distance:0; content:"has been successfully verified"; nocase; distance:0; content:"Thank you for using our"; nocase; distance:0; content:"We will redirect you shortly"; nocase; distance:0; content:"Webmail Security Systems"; nocase; distance:0; classtype:credential-theft; sid:2032286; rev:4; metadata:attack_target Client_Endpoint, created_at 2016_06_22, deployment Perimeter, confidence Medium, signature_severity Critical, tag Phishing, updated_at 2020_08_12, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1566, mitre_technique_name Phishing;)