TrojanDownloader_O97M_Obfuse_PBRE_MTB

YARA detection rule by roadwy

TrojanDownloader:O97M/Obfuse.PBRE!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,07 00 07 00 07 00 00

rule TrojanDownloader_O97M_Obfuse_PBRE_MTB{
	meta:
		description = "TrojanDownloader:O97M/Obfuse.PBRE!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,07 00 07 00 07 00 00 "
		
	strings :
		$a_01_0 = {3d 20 22 63 6d 64 20 2f 63 20 73 74 61 72 74 20 2f 6d 69 6e 20 50 6f 77 22 } 		$a_01_1 = {3d 20 22 65 72 53 68 65 6c 6c 20 2d 65 78 20 42 79 70 61 73 73 20 2d 6e 4f 22 } 		$a_01_2 = {3d 20 22 70 20 2d 77 20 31 20 3b 69 27 45 27 78 28 69 77 72 22 } 		$a_01_3 = {3d 20 22 67 37 78 42 6e 71 2f 34 38 62 39 33 36 35 65 63 37 36 31 33 38 31 32 39 61 65 66 36 39 35 35 34 34 66 64 64 30 61 34 39 64 38 35 62 38 66 33 2f 66 69 6c 65 73 2f 70 30 30 30 73 74 61 72 74 27 29 20 2d 75 73 65 42 29 3b 20 53 74 22 } 		$a_01_4 = {3d 20 22 61 72 74 2d 53 6c 65 65 70 20 2d 53 65 63 22 } 		$a_01_5 = {3d 20 43 61 72 31 20 2b 20 43 61 72 32 20 2b 20 43 61 72 33 20 2b 20 43 61 72 34 20 2b 20 43 61 72 35 20 2b 20 43 61 72 36 } 		$a_01_6 = {53 68 65 6c 6c 20 69 5f 6f 70 65 6e 68 65 61 72 74 74 68 69 6e 67 } 	condition:
		((#a_01_0  & 1)*1+(#a_01_1  & 1)*1+(#a_01_2  & 1)*1+(#a_01_3  & 1)*1+(#a_01_4  & 1)*1+(#a_01_5  & 1)*1+(#a_01_6  & 1)*1) >=7
 
}

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

db0671eb-a2e3-46cc-b334-1c804995396b

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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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