TrojanDownloader_O97M_Donoff_143

YARA detection rule by roadwy

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

rule TrojanDownloader_O97M_Donoff_143{
	meta:
		description = "TrojanDownloader:O97M/Donoff,SIGNATURE_TYPE_MACROHSTR_EXT,03 00 03 00 03 00 00 "
		
	strings :
		$a_00_0 = {46 75 6e 63 74 69 6f 6e 20 61 62 63 64 65 66 6f 70 75 73 28 79 75 69 75 76 29 } 		$a_00_1 = {73 69 6c 6d 61 72 69 6f 6e 20 3d 20 4d 69 64 28 55 73 65 72 46 6f 72 6d 31 2e 54 65 78 74 42 6f 78 31 2c 20 4c 65 6e 28 55 73 65 72 46 6f 72 6d 31 2e 54 65 78 74 42 6f 78 31 29 20 2b 20 6e 75 6d 20 2d 20 6b 65 79 2c 20 31 29 } 		$a_00_2 = {71 77 65 72 74 79 63 61 72 64 20 3d 20 71 77 65 72 74 79 63 61 72 64 20 2b 20 73 69 6c 6d 61 72 69 6f 6e 28 61 62 63 64 65 66 6f 70 75 73 28 4d 69 64 28 68 6f 6c 6c 79 76 69 72 75 73 2c 20 69 2c 20 31 29 29 2c 20 35 29 } 	condition:
		((#a_00_0  & 1)*1+(#a_00_1  & 1)*1+(#a_00_2  & 1)*1) >=3
 
}

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

d7164f6f-fb70-4dc0-9fb8-6ab8f70368d9

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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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