TrojanDownloader_O97M_Donoff_SS_MTB_9

YARA detection rule by roadwy

TrojanDownloader:O97M/Donoff.SS!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,08 00 08 00 08 00 00

rule TrojanDownloader_O97M_Donoff_SS_MTB_9{
	meta:
		description = "TrojanDownloader:O97M/Donoff.SS!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,08 00 08 00 08 00 00 "
		
	strings :
		$a_01_0 = {41 79 42 74 48 54 54 43 78 61 5a 46 48 65 4a 20 3d 20 41 79 42 74 48 54 54 43 78 61 5a 46 48 65 4a 20 2b 20 22 70 22 } 		$a_01_1 = {41 79 42 74 48 54 54 43 78 61 5a 46 48 65 4a 20 3d 20 41 79 42 74 48 54 54 43 78 61 5a 46 48 65 4a 20 2b 20 22 7a 22 } 		$a_01_2 = {6e 59 44 45 64 57 78 4d 4c 53 53 77 71 48 54 20 3d 20 6e 59 44 45 64 57 78 4d 4c 53 53 77 71 48 54 20 2b 20 22 70 22 } 		$a_01_3 = {6e 59 44 45 64 57 78 4d 4c 53 53 77 71 48 54 20 3d 20 6e 59 44 45 64 57 78 4d 4c 53 53 77 71 48 54 20 2b 20 22 7a 22 } 		$a_03_4 = {66 20 3d 20 78 73 61 64 77 71 64 77 71 64 28 [0-15] 29 } 		$a_01_5 = {53 68 65 6c 6c 20 66 } 		$a_01_6 = {78 73 61 64 77 71 64 77 71 64 20 3d 20 73 74 72 49 6e 70 75 74 } 		$a_01_7 = {4d 69 64 28 73 74 72 49 6e 70 75 74 2c 20 69 2c 20 31 29 20 3d 20 43 68 72 28 41 73 63 28 4d 69 64 28 73 74 72 49 6e 70 75 74 2c 20 69 2c 20 31 29 29 20 2d 20 6e 29 } 	condition:
		((#a_01_0  & 1)*2+(#a_01_1  & 1)*2+(#a_01_2  & 1)*2+(#a_01_3  & 1)*2+(#a_03_4  & 1)*1+(#a_01_5  & 1)*1+(#a_01_6  & 1)*1+(#a_01_7  & 1)*1) >=8
 
}

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

b3e62f91-d60a-4068-ac52-3d7fba76b6cb

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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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