webshell_hunting_php_includer

YARA detection rule by Arnim Rupp · https://creativecommons.org/licenses/by-nc/4.0/

Suspicious: Might be PHP webshell includer, check the included file

rule webshell_hunting_php_includer: WEBSHELL HUNT {
  meta:
    description = "Suspicious: Might be PHP webshell includer, check the included file"
    license     = "https://creativecommons.org/licenses/by-nc/4.0/"
    author      = "Arnim Rupp"
    date        = "2021/04/17"
    score       = 40

  condition:
    capa_php_old_safe and
    capa_php_include and
    filesize < 50
}

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

90880eb3-b967-4602-9cb7-879ed3067fdd

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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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