Korplug

YARA detection rule by https://github.com/reed1713 · GPL-2.0

IOC looks for events associated with the KORPLUG Backdoor linked to the recent operation greedy wonk activity.

rule Korplug
{ 
	meta:
		maltype = "Korplug Backdoor"
        author = "https://github.com/reed1713"
		reference = "http://www.symantec.com/connect/blogs/new-sample-backdoorkorplug-signed-stolen-certificate"
		description = "IOC looks for events associated with the KORPLUG Backdoor linked to the recent operation greedy wonk activity."
		
	strings:
		$type="Microsoft-Windows-Security-Auditing"
		$eventid="4688"
		$data="ProgramData\\RasTls\\RasTls.exe"

		$type1="Microsoft-Windows-Security-Auditing"
		$eventid1="4688"
		$data1="ProgramData\\RasTls\\rundll32.exe"

		$type2="Microsoft-Windows-Security-Auditing"
		$eventid2="4688"
		$data2="ProgramData\\RasTls\\svchost.exe"
	condition:
		all of them
}

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

24c5e7a1-829e-4205-b995-5502b1e752c6

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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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