TrojanDownloader_O97M_Donoff_127

YARA detection rule by roadwy

TrojanDownloader:O97M/Donoff,SIGNATURE_TYPE_MACROHSTR_EXT,05 00 05 00 05 00 00

rule TrojanDownloader_O97M_Donoff_127{
	meta:
		description = "TrojanDownloader:O97M/Donoff,SIGNATURE_TYPE_MACROHSTR_EXT,05 00 05 00 05 00 00 "
		
	strings :
		$a_01_0 = {52 6c 72 57 66 66 6f 62 4d 20 3d 20 45 6e 76 69 72 6f 6e 28 22 55 22 20 2b 20 22 53 45 52 50 22 20 2b 20 22 52 4f 22 20 2b 20 22 46 22 20 2b 20 22 49 4c 22 20 2b 20 22 45 22 29 } 		$a_01_1 = {56 6b 43 7a 6a 54 56 71 6d 47 61 6b 6a 61 4a 2e 52 75 6e 20 28 51 6b 46 4d 55 49 53 6a 50 70 41 78 78 70 79 29 } 		$a_01_2 = {42 42 45 75 7a 72 51 7a 73 20 3d 20 22 63 4d 78 4c 7a 46 62 22 } 		$a_01_3 = {68 46 76 47 57 6d 20 3d 20 22 2e 22 } 		$a_01_4 = {4d 7a 72 4b 57 69 20 3d 20 22 65 78 65 22 } 	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) >=5
 
}

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

9f4e85df-de0c-4d3b-8392-c018e6cae159

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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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