Backdoor_Win32_PcClient_ZK

YARA detection rule by roadwy

Backdoor:Win32/PcClient.ZK,SIGNATURE_TYPE_PEHSTR_EXT,04 00 04 00 07 00 00

rule Backdoor_Win32_PcClient_ZK{
	meta:
		description = "Backdoor:Win32/PcClient.ZK,SIGNATURE_TYPE_PEHSTR_EXT,04 00 04 00 07 00 00 "
		
	strings :
		$a_03_0 = {78 c6 44 24 ?? 2e c6 44 24 ?? 61 c6 44 24 ?? 73 c6 44 24 ?? 70 c6 44 24 ?? 3f } 		$a_03_1 = {c6 45 e7 65 c6 45 e8 78 c6 45 e9 2e [0-08] c6 45 ea 61 c6 45 eb 73 [0-08] c6 45 ec 70 } 		$a_03_2 = {c6 45 e4 69 89 55 e5 c6 45 e5 6e 89 55 e9 [0-08] c6 45 e7 65 89 55 ?? c6 45 e8 78 [0-04] c6 45 e9 2e } 		$a_00_3 = {50 63 43 6c 69 65 6e 74 2e 64 6c 6c } 		$a_00_4 = {32 30 30 00 25 73 25 73 25 73 } 		$a_00_5 = {53 65 72 76 69 63 65 4d 61 69 6e } 		$a_00_6 = {46 75 63 6b 5f 44 72 77 65 62 } 	condition:
		((#a_03_0  & 1)*3+(#a_03_1  & 1)*3+(#a_03_2  & 1)*2+(#a_00_3  & 1)*1+(#a_00_4  & 1)*1+(#a_00_5  & 1)*1+(#a_00_6  & 1)*1) >=4
 
}

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

228e1369-1737-48ab-a996-c6d86d4b86f4

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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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