TrojanDownloader_O97M_Donoff_SMI_MTB

YARA detection rule by roadwy

TrojanDownloader:O97M/Donoff.SMI!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,0a 00 0a 00 09 00 00

rule TrojanDownloader_O97M_Donoff_SMI_MTB{
	meta:
		description = "TrojanDownloader:O97M/Donoff.SMI!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,0a 00 0a 00 09 00 00 "
		
	strings :
		$a_01_0 = {53 65 74 20 46 53 4f 20 3d 20 43 72 65 61 74 65 4f 62 6a 65 63 74 28 22 53 63 72 69 70 74 69 6e 67 2e 46 69 6c 65 53 79 73 74 65 6d 4f 62 6a 65 63 74 22 29 } 		$a_03_1 = {46 53 4f 2e 43 6f 70 79 46 69 6c 65 20 [0-06] 2c 20 [0-06] 2c 20 31 } 		$a_03_2 = {4f 70 65 6e 20 [0-07] 20 46 6f 72 20 4f 75 74 70 75 74 20 41 73 20 23 31 } 		$a_01_3 = {41 73 20 4e 65 77 20 53 68 65 6c 6c 33 32 2e 53 68 65 6c 6c } 		$a_03_4 = {43 61 6c 6c 20 [0-07] 2e 53 68 65 6c 6c 45 78 65 63 75 74 65 28 [0-07] 2c 20 [0-07] 2c 20 22 20 22 2c 20 53 57 5f 48 49 44 45 29 } 		$a_01_5 = {28 66 72 6d 2e 70 61 79 6c 6f 61 64 2e 74 65 78 74 29 } 		$a_03_6 = {41 70 70 6c 69 63 61 74 69 6f 6e 2e 52 75 6e 20 22 [0-07] 22 2c 20 [0-06] 2c 20 [0-06] 20 26 20 22 6d 61 74 20 3a 20 22 22 22 20 26 20 [0-06] 20 26 20 22 22 22 22 } 		$a_01_7 = {3d 20 53 70 6c 69 74 28 61 57 59 4a 6a 28 66 72 6d 2e 70 61 74 68 73 2e 74 65 78 74 29 2c 20 22 7c 22 29 } 		$a_01_8 = {53 70 6c 69 74 28 61 75 36 76 73 54 28 66 72 6d 2e 70 61 74 68 73 2e 74 65 78 74 29 2c 20 22 7c 22 29 } 	condition:
		((#a_01_0  & 1)*1+(#a_03_1  & 1)*1+(#a_03_2  & 1)*1+(#a_01_3  & 1)*1+(#a_03_4  & 1)*1+(#a_01_5  & 1)*1+(#a_03_6  & 1)*1+(#a_01_7  & 1)*3+(#a_01_8  & 1)*3) >=10
 
}

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

2d9793a6-32db-43a6-8910-c2e5e80eab8c

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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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