TrojanDownloader_O97M_Powdow_BKST_MTB

YARA detection rule by roadwy

TrojanDownloader:O97M/Powdow.BKST!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,05 00 05 00 05 00 00

rule TrojanDownloader_O97M_Powdow_BKST_MTB{
	meta:
		description = "TrojanDownloader:O97M/Powdow.BKST!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,05 00 05 00 05 00 00 "
		
	strings :
		$a_01_0 = {3d 20 43 68 72 28 78 63 64 73 67 20 2d 20 31 34 34 29 } 		$a_01_1 = {64 73 66 64 61 73 20 3d 20 63 78 7a 76 78 7a 73 66 } 		$a_01_2 = {46 75 6e 63 74 69 6f 6e 20 76 62 6e 67 68 66 67 28 78 63 64 73 67 20 41 73 20 56 61 72 69 61 6e 74 29 } 		$a_01_3 = {76 78 63 78 62 20 3d 20 22 76 78 63 62 20 62 78 63 62 20 63 62 76 63 78 62 22 } 		$a_03_4 = {2e 52 75 6e 28 [0-32] 2c 20 [0-32] 29 } 	condition:
		((#a_01_0  & 1)*1+(#a_01_1  & 1)*1+(#a_01_2  & 1)*1+(#a_01_3  & 1)*1+(#a_03_4  & 1)*1) >=5
 
}

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

eec9a6b3-ad48-4a29-bf37-56205dd381ef

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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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