""ET CURRENT_EVENTS Base64 HTTP URL Refresh - Common Phish Landing Obfuscation 2016-01-01""
SID: 2031695
Revision: 2
Class Type: trojan-activity
Metadata: created_at 2016_01_01, updated_at 2016_11_11
Reference:
Protocol: tcp
Source Network: $EXTERNAL_NET
Source Port: $HTTP_PORTS
Destination Network: $HOME_NET
Destination Port: any
Flow: to_client,established
Contents:
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Value: "<meta http-equiv="
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Value: "refresh"
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Value: "data|3a|text/html|3b|base64,"
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Value: !"cGFnZV9ub3RfZm91bmQuaHRtb"
Within:
PCRE: "/^(?:[A-Za-z0-9+/]{4})*(?:[A-Za-z0-9+/]{2}==|[A-Za-z0-9+/]{3}=|[A-Za-z0-9+/]{4})\x22|\x27/Rsi"
Special Options:
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file_data
-
nocase
-
nocase
-
fast_pattern
-
nocase