TrojanDownloader_O97M_Donoff_189

YARA detection rule by roadwy

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

rule TrojanDownloader_O97M_Donoff_189{
	meta:
		description = "TrojanDownloader:O97M/Donoff,SIGNATURE_TYPE_MACROHSTR_EXT,02 00 02 00 02 00 00 "
		
	strings :
		$a_01_0 = {42 70 43 43 64 76 6c 78 35 6f 69 28 4a 5a 30 45 73 39 34 6b 78 28 55 41 49 53 6e 29 2c 20 28 46 68 34 7a 61 51 76 62 57 59 63 77 38 28 28 46 68 34 7a 61 51 76 62 57 59 63 77 38 28 4a 50 4f 31 59 69 76 53 6f 59 70 67 57 29 20 2b 20 46 68 34 7a 61 51 76 62 57 59 63 77 38 28 4a 6b 69 58 4d 6d 37 51 54 29 29 20 4d 6f 64 20 28 28 36 34 20 2b 20 37 34 32 20 2b 20 36 34 20 2d 20 37 34 32 20 2b 20 36 34 20 2b 20 37 34 32 20 2b 20 36 34 20 2d 20 37 34 32 29 29 29 29 29 } 		$a_01_1 = {28 4a 50 4f 31 59 69 76 53 6f 59 70 67 57 20 2b 20 46 68 34 7a 61 51 76 62 57 59 63 77 38 28 55 41 49 53 6e 29 20 2b 20 4d 6d 4c 35 6d 4e 62 70 6b 75 57 58 53 28 55 41 49 53 6e 20 4d 6f 64 20 28 51 61 39 4f 28 45 5a 36 55 74 47 5a 6b 64 64 29 20 2b 20 31 29 29 29 20 4d 6f 64 20 28 28 36 34 20 2b 20 37 34 36 20 2b 20 36 34 20 2d 20 37 34 36 20 2b 20 36 34 20 2b 20 37 34 36 20 2b 20 36 34 20 2d 20 37 34 36 29 29 } 	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 ]]

6a95df02-6f06-4619-8930-d21846b65102

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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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