APT10_redleaves_strings

YARA detection rule by JPCERT/CC Incident Response Group · NOASSERTION

RedLeaves malware

rule APT10_redleaves_strings {
      meta:
        description = "RedLeaves malware"
        author = "JPCERT/CC Incident Response Group"
        hash = "ff0b79ed5ca3a5e1a9dabf8e47b15366c1d0783d0396af2cbba8e253020dbb34"

    	strings:
    		$v1a = "red_autumnal_leaves_dllmain.dll"
        $w1a = "RedLeavesCMDSimulatorMutex" wide

    	condition:
    		$v1a or $w1a
}

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

3a195c5c-ac38-48f2-9c4d-b32f25664a67

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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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