TrojanDownloader_O97M_Donoff_AR_MTB_6

YARA detection rule by roadwy

TrojanDownloader:O97M/Donoff.AR!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,17 00 17 00 05 00 00

rule TrojanDownloader_O97M_Donoff_AR_MTB_6{
	meta:
		description = "TrojanDownloader:O97M/Donoff.AR!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,17 00 17 00 05 00 00 "
		
	strings :
		$a_01_0 = {2e 43 72 65 61 74 65 54 65 78 74 46 69 6c 65 28 22 43 3a 5c 50 72 6f 67 72 61 6d 44 61 74 61 5c 4c 4b 4f 4a 48 46 54 44 54 59 46 56 4b 44 53 46 46 56 22 2c 20 54 72 75 65 29 } 		$a_01_1 = {2e 45 78 65 63 20 22 65 78 70 6c 6f 72 65 72 2e 65 78 65 20 22 20 26 20 52 65 2e 4a 6f 2e 54 61 67 } 		$a_01_2 = {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_01_3 = {46 48 44 79 68 6e 73 66 78 67 75 68 78 66 6e 68 67 2e 57 72 69 74 65 4c 69 6e 65 20 28 22 56 65 72 65 72 79 22 29 } 		$a_01_4 = {53 65 74 20 46 48 44 79 68 6e 73 66 78 67 75 68 78 66 6e 68 67 20 3d 20 52 65 74 2e 43 72 65 61 74 65 54 65 78 74 46 69 6c 65 28 52 65 2e 4a 6f 2e 54 61 67 2c 20 54 72 75 65 29 } 	condition:
		((#a_01_0  & 1)*10+(#a_01_1  & 1)*10+(#a_01_2  & 1)*1+(#a_01_3  & 1)*1+(#a_01_4  & 1)*1) >=23
 
}

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

cecd31af-e1fe-4050-9089-5799b27bc686

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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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