alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET PHISHING Possible Base64 Obfuscated Phishing Landing 2015-11-30"; flow:established,to_client; http.stat_code; content:"200"; http.header; header_lowercase; content:"content-encoding|3a 20|gzip"; http.content_type; content:"text/html"; startswith; file.data; content:"<meta http-equiv=|22|Refresh|22|"; within:100; fast_pattern; nocase; content:"content=|22|0|3b 20|URL="; nocase; distance:1; content:"data|3a|text/html|3b|base64,"; nocase; within:25; classtype:social-engineering; sid:2031906; rev:8; metadata:attack_target Client_Endpoint, created_at 2015_11_30, deployment Perimeter, performance_impact Moderate, confidence Medium, signature_severity Major, tag Phishing, updated_at 2024_04_20, mitre_tactic_id TA0005, mitre_tactic_name Defense_Evasion, mitre_technique_id T1027, mitre_technique_name Obfuscated_Files_or_Information;)