TrojanDownloader_O97M_Donoff_128

YARA detection rule by roadwy

TrojanDownloader:O97M/Donoff,SIGNATURE_TYPE_MACROHSTR_EXT,01 00 01 00 01 00 00

rule TrojanDownloader_O97M_Donoff_128{
	meta:
		description = "TrojanDownloader:O97M/Donoff,SIGNATURE_TYPE_MACROHSTR_EXT,01 00 01 00 01 00 00 "
		
	strings :
		$a_01_0 = {4b 57 52 4c 4a 44 20 3d 20 4b 57 52 4c 4a 44 20 2b 20 4c 49 69 28 56 61 6c 28 4c 49 69 28 28 2d 32 30 37 33 20 2b 20 32 31 31 31 29 29 20 26 20 4c 49 69 28 28 2d 36 33 35 32 20 2b 20 36 34 32 34 29 29 20 26 20 28 4d 69 64 24 28 4d 59 2c 20 28 32 20 2a 20 4b 69 29 20 2d 20 31 2c 20 32 29 29 29 20 58 6f 72 20 56 7a 72 6d 33 33 28 4d 69 64 24 28 4a 51 5a 67 34 50 2c 20 28 4b 69 20 2d 20 28 45 51 66 66 20 2a 20 28 4b 69 20 5c 20 45 51 66 66 29 29 20 2b 20 31 29 2c 20 31 29 29 29 } 	condition:
		((#a_01_0  & 1)*1) >=1
 
}

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

4110d4ec-4ab3-49ca-9552-a861fb811093

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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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