TrojanDownloader_Win32_PsDow_B_MTB

YARA detection rule by roadwy

TrojanDownloader:Win32/PsDow.B!MTB,SIGNATURE_TYPE_PEHSTR_EXT,0a 00 0a 00 05 00 00

rule TrojanDownloader_Win32_PsDow_B_MTB{
	meta:
		description = "TrojanDownloader:Win32/PsDow.B!MTB,SIGNATURE_TYPE_PEHSTR_EXT,0a 00 0a 00 05 00 00 "
		
	strings :
		$a_01_0 = {4e 65 77 2d 4f 62 6a 65 63 74 20 53 79 73 74 65 6d 2e 4e 65 74 2e 57 65 62 43 6c 69 65 6e 74 } 		$a_01_1 = {2e 44 6f 77 6e 6c 6f 61 64 46 69 6c 65 28 } 		$a_01_2 = {4e 65 77 2d 4f 62 6a 65 63 74 20 2d 63 6f 6d 20 73 68 65 6c 6c 2e 61 70 70 6c 69 63 61 74 69 6f 6e } 		$a_01_3 = {2e 73 68 65 6c 6c 65 78 65 63 75 74 65 28 } 		$a_01_4 = {70 6f 77 65 72 73 68 65 6c 6c 20 2d 45 78 65 63 75 74 69 6f 6e 50 6f 6c 69 63 79 20 42 79 70 61 73 73 20 2d 46 } 	condition:
		((#a_01_0  & 1)*2+(#a_01_1  & 1)*2+(#a_01_2  & 1)*2+(#a_01_3  & 1)*2+(#a_01_4  & 1)*2) >=10
 
}

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

bf2de8e7-28b9-42b8-8dcd-b07413feaaa1

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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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