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Rev: 3 • Jan 1, 2016, 12:00 PMET PHISHING Base64 HTTP URL Refresh - Common Phish Landing Obfuscation 2016-01-01
alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET PHISHING Base64 HTTP URL Refresh - Common Phish Landing Obfuscation 2016-01-01"; flow:to_client,established; file_data; content:"<meta http-equiv="; nocase; content:"refresh"; distance:1; nocase; content:"data|3a|text/html|3b|base64,"; distance:0; fast_pattern; nocase; pcre:"/^(?:[A-Za-z0-9+/]{4})*(?:[A-Za-z0-9+/]{2}==|[A-Za-z0-9+/]{3}=|[A-Za-z0-9+/]{4})\x22|\x27/Rsi"; content:!"cGFnZV9ub3RfZm91bmQuaHRtb"; classtype:social-engineering; sid:2031695; rev:3; metadata:created_at 2016_01_01, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)
Jan 1, 2016, 12:00 PM
Jul 26, 2019, 12:00 PM
Sep 21, 2024, 3:00 AM
Sep 15, 2025, 9:36 PM
rules/emerging-phishing.rules