ET PHISHING Possible Base64 Obfuscated Phishing Landing 2015-11-30

alert http $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET PHISHING Possible Base64 Obfuscated Phishing Landing 2015-11-30";
    flow:established,from_server;
    http.stat_code;
    content:"200";
    http.header;
    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:7;
    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_22, mitre_tactic_id TA0005, mitre_tactic_name Defense_Evasion, mitre_technique_id T1027, mitre_technique_name Obfuscated_Files_or_Information;
)