TrojanDownloader_O97M_Donoff_200

YARA detection rule by roadwy

TrojanDownloader:O97M/Donoff,SIGNATURE_TYPE_MACROHSTR_EXT,03 00 03 00 04 00 00

rule TrojanDownloader_O97M_Donoff_200{
	meta:
		description = "TrojanDownloader:O97M/Donoff,SIGNATURE_TYPE_MACROHSTR_EXT,03 00 03 00 04 00 00 "
		
	strings :
		$a_01_0 = {26 20 43 68 72 28 42 79 56 61 6c 76 44 65 66 61 75 6c 74 28 69 29 20 2d 20 32 20 2a 20 4e 6f 74 68 69 6e 67 4f 72 4e 6f 64 65 4e 61 6d 65 20 2d 20 34 30 30 30 20 2d 20 39 30 30 20 2d 20 38 30 20 2d 20 33 29 } 		$a_01_1 = {35 31 38 35 2c 20 35 31 39 37 2c 20 35 31 39 37 2c 20 35 31 39 33 2c 20 35 31 33 39 2c 20 35 31 32 38 2c 20 35 31 32 38 2c 20 35 31 38 38 2c 20 35 31 39 35 2c 20 35 31 38 36 2c 20 35 31 39 36 2c 20 35 31 39 37 2c 20 35 31 39 38 2c 20 35 31 39 35 2c 20 35 31 37 38 2c 20 35 31 38 37 2c 20 35 31 32 37 2c 20 35 31 38 30 2c 20 35 31 39 32 2c 20 35 31 39 30 2c 20 35 31 32 38 2c 20 35 32 30 37 2c } 		$a_01_2 = {35 31 39 35 2c 20 35 31 38 36 2c 20 35 31 39 36 2c 20 35 31 39 37 2c 20 35 31 39 38 2c 20 35 31 39 35 2c 20 35 31 37 38 2c 20 35 31 38 37 2c 20 35 31 33 30 2c 20 35 31 33 34 2c 20 35 31 32 38 2c 20 35 31 33 36 2c 20 35 31 33 33 2c 20 35 31 33 35 2c 20 35 31 33 32 2c 20 35 31 39 35 2c 20 35 31 38 31 2c } 		$a_01_3 = {35 31 33 34 2c 20 35 31 32 38 2c 20 35 31 33 36 2c 20 35 31 33 33 2c 20 35 31 33 35 2c 20 35 31 33 32 2c 20 35 31 39 35 2c 20 35 31 38 31 2c 20 35 31 32 38 2c 20 35 31 33 36 2c 20 35 31 38 37 2c 20 35 31 38 34 2c 20 35 31 33 33 2c 20 35 31 33 34 2c 20 35 31 32 37 2c 20 35 31 38 32 2c 20 35 32 30 31 2c 20 35 31 38 32 29 } 	condition:
		((#a_01_0  & 1)*2+(#a_01_1  & 1)*1+(#a_01_2  & 1)*1+(#a_01_3  & 1)*1) >=3
 
}

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

a6c4300c-72e0-410a-93f2-aebf85ad8363

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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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