16 lines
533 B
Text
16 lines
533 B
Text
rule qbot_vbs
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{
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meta:
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description = "Catches QBot VBS files"
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reference = "https://research.checkpoint.com/2020/exploring-qbots-latest-attack-methods/"
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author = "Alex Ilgayev"
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date = "2020-06-07"
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strings:
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$s3 = "ms.Send"
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$s4 = "for i=1 to 6"
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$s5 = "if ms.readyState = 4 Then"
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$s6 = "if len(ms.responseBody) <> 0 then"
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$s7 = /if left\(ms.responseText, \w*?\) = \"MZ\" then/
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condition:
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filesize > 20MB and $s3 and $s4 and $s5 and $s6 and $s7
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}
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