Backdoor_Win64_BianDoor_B

YARA detection rule by roadwy

Backdoor:Win64/BianDoor.B,SIGNATURE_TYPE_PEHSTR_EXT,02 00 02 00 05 00 00

rule Backdoor_Win64_BianDoor_B{
	meta:
		description = "Backdoor:Win64/BianDoor.B,SIGNATURE_TYPE_PEHSTR_EXT,02 00 02 00 05 00 00 "
		
	strings :
		$a_01_0 = {67 6f 00 2f 68 6f 6d 65 2f 61 64 6d 69 6e 2f 70 72 6a 63 74 2f 67 6f 6c 61 6e 67 2f 73 6f 63 6b 73 } 		$a_01_1 = {6d 61 69 6e 2e 63 6f 6e 6e 65 63 74 46 6f 72 53 6f 63 6b 73 2e 66 75 6e 63 31 00 6d 61 69 6e 2e 6d 61 69 6e } 		$a_03_2 = {2f 73 6f 63 6b 73 35 2e 67 6f 00 6f 75 74 2f 90 05 03 03 30 2d 39 2e 90 05 03 03 30 2d 39 2e 90 05 03 03 30 2d 39 2e 90 05 03 03 30 2d 39 2f 90 05 05 03 30 2d 39 2d 90 05 05 03 30 2d 39 2f 63 6c 69 65 6e 74 2f 6d 61 69 6e 2e 67 6f } 		$a_03_3 = {2f 73 6f 63 6b 73 2f 6f 75 74 2f 90 05 03 03 30 2d 39 2e 90 05 03 03 30 2d 39 2e 90 05 03 03 30 2d 39 2e 90 05 03 03 30 2d 39 2f 90 05 05 03 30 2d 39 2d 90 05 05 03 30 2d 39 2f 63 6c 69 65 6e 74 2f 6d 61 69 6e 2e 67 6f } 		$a_03_4 = {2f 73 6f 63 6b 73 35 2e 67 6f 00 6f 75 74 2f [0-32] 61 6d 61 7a 6f 6e 61 77 73 2e 63 6f 6d 2f 90 05 05 03 30 2d 39 2d 90 05 05 03 30 2d 39 2f 63 6c 69 65 6e 74 2f 6d 61 69 6e 2e 67 6f } 	condition:
		((#a_01_0  & 1)*1+(#a_01_1  & 1)*1+(#a_03_2  & 1)*1+(#a_03_3  & 1)*1+(#a_03_4  & 1)*1) >=2
 
}

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

c5f8ec50-f5bd-4ee2-86e6-50c92647b895

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