TrojanDownloader_O97M_Obfuse_NYEE_MTB

YARA detection rule by roadwy

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

rule TrojanDownloader_O97M_Obfuse_NYEE_MTB{
	meta:
		description = "TrojanDownloader:O97M/Obfuse.NYEE!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,05 00 05 00 05 00 00 "
		
	strings :
		$a_01_0 = {70 72 6f 67 72 61 6d 73 74 69 6c 6c 20 3d 20 22 43 3a 5c 55 73 65 72 73 5c 50 75 62 6c 69 63 5c 44 6f 63 75 6d 65 6e 74 73 5c 73 69 6e 67 6c 65 72 69 73 6b 2e 62 61 74 22 } 		$a_01_1 = {22 20 2d 77 20 68 20 53 74 61 72 74 2d 42 69 74 73 54 72 61 6e 73 66 65 72 20 2d 53 6f 75 72 63 65 20 68 74 74 70 73 3a 2f 2f 63 61 72 67 6f 74 72 61 6e 73 2d 67 69 6f 62 61 6c 2e 63 6f 6d 2f 68 2f 72 72 72 2e 65 78 65 } 		$a_01_2 = {2d 44 65 73 74 69 6e 61 74 69 6f 6e 20 43 3a 5c 55 73 65 72 73 5c 50 75 62 6c 69 63 5c 44 6f 63 75 6d 65 6e 74 73 5c 49 4d 72 2e 65 78 65 3b } 		$a_01_3 = {3d 20 43 72 65 61 74 65 4f 62 6a 65 63 74 28 22 53 68 65 6c 6c 2e 41 70 70 6c 69 63 61 74 69 6f 6e 22 29 } 		$a_01_4 = {43 61 6c 6c 20 77 6f 6d 61 6e 6c 65 61 72 6e 2e 4f 70 65 6e 28 70 72 6f 67 72 61 6d 73 74 69 6c 6c 29 } 	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) >=5
 
}

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

df80208c-ec8a-4b5c-8320-70061263e49e

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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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