SUSP_PDB_CN_Threat_Actor_May19_1

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

Detects PDB path user name used by Chinese threat actors

rule SUSP_PDB_CN_Threat_Actor_May19_1 {
   meta:
      description = "Detects PDB path user name used by Chinese threat actors"
      author = "Florian Roth (Nextron Systems)"
      reference = "https://www.guardicore.com/2019/05/nansh0u-campaign-hackers-arsenal-grows-stronger/"
      date = "2019-05-31"
      score = 65
      hash1 = "01c3882e8141a25abe37bb826ab115c52fd3d109c4a1b898c0c78cee8dac94b4"
      id = "fc6969ed-5fc1-5b3b-9659-c6fc1c9e2f9c"
   strings:
      $x1 = "C:\\Users\\zcg\\Desktop\\" ascii
   condition:
      uint16(0) == 0x5a4d and filesize < 400KB and 1 of them
}

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

4cd4026d-8462-4360-b5ac-7f22ce502339

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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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