Backdoor_Win32_PcClient_DU

YARA detection rule by roadwy

Backdoor:Win32/PcClient.DU,SIGNATURE_TYPE_PEHSTR_EXT,0a 00 0a 00 0d 00 00

rule Backdoor_Win32_PcClient_DU{
	meta:
		description = "Backdoor:Win32/PcClient.DU,SIGNATURE_TYPE_PEHSTR_EXT,0a 00 0a 00 0d 00 00 "
		
	strings :
		$a_03_0 = {44 00 00 00 c7 45 ?? 01 00 00 00 66 8b 4d ?? 66 89 4d dc 81 7d ?? 49 1f 00 00 75 7f } 		$a_01_1 = {c7 00 57 69 6e 53 c7 40 04 74 61 30 00 61 eb 00 } 		$a_01_2 = {47 45 54 20 c7 40 04 2f 20 48 54 c7 40 08 54 50 2f 31 c7 40 0c 2e 31 0d 0a } 		$a_03_3 = {6d 79 73 65 c7 ?? ?? ?? ?? ?? 72 76 65 72 c7 ?? ?? ?? ?? ?? 70 6f 72 74 } 		$a_03_4 = {72 76 65 72 c7 ?? ?? ?? ?? ?? 61 64 64 72 } 		$a_02_5 = {3d 25 64 3b ?? ?? ?? ?? 69 64 3d 25 73 } 		$a_02_6 = {47 6c 6f 62 61 6c 5c 25 73 2d ?? ?? ?? 2d 65 76 65 6e } 		$a_02_7 = {47 6c 6f 62 61 6c 5c 25 73 2d ?? ?? ?? 2d 6d 65 74 75 } 		$a_01_8 = {25 30 32 64 25 30 34 64 25 30 32 64 2f 25 30 32 64 25 30 32 64 25 30 32 64 2f 25 64 2e 6a 73 70 } 		$a_01_9 = {73 65 72 76 65 72 70 6f 72 74 } 		$a_01_10 = {6d 79 74 68 72 65 61 64 69 64 } 		$a_01_11 = {6d 79 73 65 72 76 65 72 61 64 64 72 } 		$a_03_12 = {25 30 38 78 2e 74 6d 70 [0-15] 25 73 5c 2a 2e 2a } 	condition:
		((#a_03_0  & 1)*2+(#a_01_1  & 1)*2+(#a_01_2  & 1)*2+(#a_03_3  & 1)*2+(#a_03_4  & 1)*2+(#a_02_5  & 1)*2+(#a_02_6  & 1)*2+(#a_02_7  & 1)*2+(#a_01_8  & 1)*1+(#a_01_9  & 1)*1+(#a_01_10  & 1)*1+(#a_01_11  & 1)*1+(#a_03_12  & 1)*1) >=10
 
}

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

d9d508a2-8500-402c-9866-b9eb49a09e4d

Propose edits, view related rules, and engage with the community through comments.

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 ]]

Community Discussion