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PowerShell_in_Word_Doc

YARA detection rule by Florian Roth (Nextron Systems) · Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE

Detects a powershell and bypass keyword in a Word document

rule PowerShell_in_Word_Doc {
   meta:
      description = "Detects a powershell and bypass keyword in a Word document"
      license = "Detection Rule License 1.1 https://github.com/Neo23x0/signature-base/blob/master/LICENSE"
      author = "Florian Roth (Nextron Systems)"
      reference = "Internal Research - ME"
      date = "2017-06-27"
      score = 50
      hash1 = "4fd4a7b5ef5443e939015276fc4bf8ffa6cf682dd95845ef10fdf8158fdd8905"
      id = "c9d073ff-25c6-5751-92bf-e22ae7cfd5f5"
   strings:
      $s1 = "POwErSHELl.ExE" fullword ascii nocase
      $s2 = "BYPASS" fullword ascii nocase
   condition:
      ( uint16(0) == 0xcfd0 and filesize < 1000KB and all of them )
}

[[ currentRule.title && currentRule.title.length > 60 ? currentRule.title.slice(0, 60) + '…' : currentRule.title ]]

f0c4e6ef-754e-4851-8ba8-c3638e98851d

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Executable code, not a declarative rule

This submission is arbitrary [[ currentRule.format ? currentRule.format.toUpperCase() : '' ]] code, not a declarative detection rule — review it as you would any script before running it, and note that it cannot be safely aggregated or auto-executed alongside YARA/Sigma/Suricata/CRS rules.

Rejected pattern present

[[ reason ]]

What does this mean?

Format & documentation suggestions

Not a security issue — this rule is valid and was accepted as-is. These are optional fields/conventions its own format recommends, mainly affecting its quality score and how well it documents itself for other reviewers.

[[ reason ]]

What do these messages mean?

[[ currentRule.title && currentRule.title.length > 60 ? currentRule.title.slice(0, 60) + '…' : currentRule.title ]]

[[ currentRule.title ]]

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