TrojanDownloader_O97M_Donoff_193

YARA detection rule by roadwy

TrojanDownloader:O97M/Donoff,SIGNATURE_TYPE_MACROHSTR_EXT,02 00 02 00 02 00 00

rule TrojanDownloader_O97M_Donoff_193{
	meta:
		description = "TrojanDownloader:O97M/Donoff,SIGNATURE_TYPE_MACROHSTR_EXT,02 00 02 00 02 00 00 "
		
	strings :
		$a_01_0 = {41 72 72 61 79 28 22 43 4d 22 2c 20 22 44 2e 22 2c 20 22 65 58 22 2c 20 22 65 20 22 2c 20 22 2f 63 22 2c 20 22 20 22 22 22 2c 20 22 50 5e 22 2c 20 22 4f 77 22 2c 20 22 5e 45 22 2c 20 22 52 73 22 2c 20 22 48 45 22 2c 20 22 6c 6c 22 2c 20 22 2e 5e 22 2c 20 22 45 58 22 2c 20 22 65 20 22 2c 20 22 20 20 22 2c 20 22 2d 5e 22 2c 20 22 65 58 22 2c 20 22 45 63 22 2c 20 22 55 5e 22 2c 20 22 54 49 22 2c 20 22 4f 4e 22 2c 20 22 5e 50 22 2c 20 22 6f 6c 22 2c 20 22 49 43 22 2c 20 22 59 5e 22 2c 20 22 20 20 22 2c 20 22 42 5e 22 2c 20 22 59 70 22 2c 20 22 5e 61 22 2c 20 22 53 53 22 2c } 		$a_01_1 = {22 2e 65 22 2c 20 22 78 45 22 2c 20 22 27 29 22 2c 20 22 5e 3b 22 2c 20 22 5e 53 22 2c 20 22 54 41 22 2c 20 22 5e 52 22 2c 20 22 5e 54 22 2c 20 22 5e 2d 22 2c 20 22 5e 70 22 2c 20 22 72 5e 22 2c 20 22 6f 5e 22 2c 20 22 63 45 22 2c 20 22 53 5e 22 2c 20 22 73 20 22 2c 20 22 27 25 22 2c 20 22 61 50 22 2c 20 22 50 64 22 2c 20 22 61 74 22 2c 20 22 61 25 22 2c 20 22 2e 45 22 2c 20 22 58 45 22 2c } 	condition:
		((#a_01_0  & 1)*1+(#a_01_1  & 1)*1) >=2
 
}

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

d9600b31-79d6-45ee-a2e7-28811b86241f

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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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