TrojanDownloader_O97M_Donoff_175

YARA detection rule by roadwy

TrojanDownloader:O97M/Donoff,SIGNATURE_TYPE_MACROHSTR_EXT,06 00 06 00 06 00 00

rule TrojanDownloader_O97M_Donoff_175{
	meta:
		description = "TrojanDownloader:O97M/Donoff,SIGNATURE_TYPE_MACROHSTR_EXT,06 00 06 00 06 00 00 "
		
	strings :
		$a_01_0 = {58 76 51 6c 59 50 51 20 45 72 72 2c 20 4d 4f 4e 6d 51 68 } 		$a_01_1 = {6e 20 3d 20 4c 59 59 55 72 68 6b 28 45 72 72 2c 20 61 68 77 4b 63 6e 2c 20 74 6e 73 6d 75 56 29 } 		$a_01_2 = {6e 7a 42 4f 43 69 63 20 3d 20 6e 55 65 49 62 65 28 61 68 77 4b 63 6e 2c 20 59 65 78 59 42 28 4d 4f 4e 6d 51 68 29 29 } 		$a_01_3 = {44 6f 20 57 68 69 6c 65 20 59 65 78 59 42 28 77 70 50 43 67 29 20 3c 20 59 65 78 59 42 28 4d 4f 4e 6d 51 68 29 20 2d 20 31 32 } 		$a_01_4 = {77 70 50 43 67 20 3d 20 77 70 50 43 67 20 26 20 6a 63 45 69 67 4e 28 4d 4f 4e 6d 51 68 2c 20 6e 7a 42 4f 43 69 63 20 2b 20 31 29 } 		$a_01_5 = {6e 7a 42 4f 43 69 63 20 3d 20 6e 55 65 49 62 65 28 28 6e 7a 42 4f 43 69 63 20 2b 20 74 6e 73 6d 75 56 29 2c 20 59 65 78 59 42 28 4d 4f 4e 6d 51 68 29 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+(#a_01_5  & 1)*1) >=6
 
}

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

58c1aeb6-f329-4c66-8b18-72582533e83d

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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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