APT_APT41_POISONPLUG_SHADOW

YARA detection rule by Florian Roth (Nextron Systems) · NOASSERTION

Detects APT41 malware POISONPLUG SHADOW

import "pe"
rule APT_APT41_POISONPLUG_SHADOW {
   meta:
      description = "Detects APT41 malware POISONPLUG SHADOW"
      author = "Florian Roth (Nextron Systems)"
      reference = "https://www.fireeye.com/blog/threat-research/2019/08/apt41-dual-espionage-and-cyber-crime-operation.html"
      date = "2019-08-07"
      score = 85
      hash1 = "462a02a8094e833fd456baf0a6d4e18bb7dab1a9f74d5f163a8334921a4ffde8"
      id = "e150dd69-c611-53de-9c7d-de28d3a208dc"
   condition:
      uint16(0) == 0x5a4d and filesize < 500KB and pe.imphash() == "c67de089f2009b21715744762fc484e8"
}

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

abdd4ef1-f330-4fe1-bf81-d351f4c18104

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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 ]]

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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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