TrojanDownloader_O97M_Obfuse_PKSX_MTB

YARA detection rule by roadwy

TrojanDownloader:O97M/Obfuse.PKSX!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,05 00 05 00 05 00 00

rule TrojanDownloader_O97M_Obfuse_PKSX_MTB{
	meta:
		description = "TrojanDownloader:O97M/Obfuse.PKSX!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,05 00 05 00 05 00 00 "
		
	strings :
		$a_03_0 = {63 6f 6d 2f 66 69 6c 65 2f 70 33 61 79 34 69 74 30 38 6a 31 73 37 68 70 2f 30 6d 61 69 6e 2e 68 74 6d 2f 66 69 6c 65 90 0a 60 00 68 74 74 70 73 3a 2f 2f 74 61 78 66 69 6c 65 2e 6d 65 64 69 61 66 69 72 65 2e } 		$a_01_1 = {27 2c 27 77 69 6e 6d 67 6d 74 73 3a 27 2c 27 } 		$a_01_2 = {43 3a 5c 78 35 63 50 72 6f 67 72 61 6d 44 61 74 61 5c 78 35 63 64 64 6f 6e 64 2e 63 6f 6d } 		$a_01_3 = {3d 20 22 43 3a 5c 55 73 65 72 73 5c 50 75 62 6c 69 63 5c 75 70 64 61 74 65 2e 6a 73 22 } 		$a_01_4 = {27 2c 27 57 69 6e 33 32 5f 50 72 6f 63 65 73 73 53 74 61 72 74 75 70 27 2c 27 } 	condition:
		((#a_03_0  & 1)*1+(#a_01_1  & 1)*1+(#a_01_2  & 1)*1+(#a_01_3  & 1)*1+(#a_01_4  & 1)*1) >=5
 
}

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

45e2db14-c927-465a-82c4-9b2283175fc2

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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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