18 lines
749 B
Text
18 lines
749 B
Text
rule general_php_fileinput_eval : Webshells General
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{
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meta:
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author = "threatintel@volexity.com"
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description = "Look for PHP files which use file_get_contents and then shortly afterwards use an eval statement."
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reference = "https://www.volexity.com/blog/2022/06/15/driftingcloud-zero-day-sophos-firewall-exploitation-and-an-insidious-breach/"
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date = "2021-06-16"
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hash1 = "1a34c43611ee310c16acc383c10a7b8b41578c19ee85716b14ac5adbf0a13bd5"
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license = "See license at https://github.com/volexity/threat-intel/blob/main/LICENSE.txt"
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memory_suitable = 0
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strings:
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$s1 = "file_get_contents(\"php://input\");"
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$s2 = "eval("
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condition:
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$s2 in (@s1[1]..@s1[1]+512)
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}
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