APT_MAL_HOPLIGHT_NK_HiddenCobra_Apr19_1_RID33F3

YARA detection rule by Florian Roth · CC-BY-NC https://creativecommons.org/licenses/by-nc/4.0/

Detects HOPLIGHT malware used by HiddenCobra APT group

rule APT_MAL_HOPLIGHT_NK_HiddenCobra_Apr19_1_RID33F3 : APT DEMO G0032 MAL NK {
   meta:
      description = "Detects HOPLIGHT malware used by HiddenCobra APT group"
      author = "Florian Roth"
      reference = "https://www.us-cert.gov/ncas/analysis-reports/AR19-100A"
      date = "2019-04-13 15:09:41"
      score = 75
      customer = "demo"
      license = "CC-BY-NC https://creativecommons.org/licenses/by-nc/4.0/"
      hash1 = "d77fdabe17cdba62a8e728cbe6c740e2c2e541072501f77988674e07a05dfb39"
      tags = "APT, DEMO, G0032, MAL, NK"
      minimum_yara = "3.5.0"
      
   strings:
      $s1 = "www.naver.com" fullword ascii
      $s2 = "PolarSSL Test CA0" fullword ascii
   condition: 
      filesize < 1000KB and all of them
}

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

362f9ad2-a17c-4206-b84d-d40ee7689bae

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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

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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.

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

[[ currentRule.title ]]

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