MAL_APT_NK_Andariel_GoLang_Validalpha_Handshake

YARA detection rule by CISA.gov · NOASSERTION

Detects a variant of the GoLang Validalpha malware

rule MAL_APT_NK_Andariel_GoLang_Validalpha_Handshake {
   meta:
      author = "CISA.gov"
      description = "Detects a variant of the GoLang Validalpha malware"
      reference = "https://www.cisa.gov/news-events/cybersecurity-advisories/aa24-207a"
      date = "2024-07-25"
      score = 75
      id = "51dafa43-9da0-569a-9123-7e9800284046"
   strings:
      $ = { 66 C7 00 AB CD C6 40 02 EF ?? 03 00 00 00 48 89 C1 ?? 03 00 00 00 }
   condition:
      all of them
}

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

2fd01f3f-8914-459b-baab-22984fdbbbae

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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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