TrojanDownloader_O97M_Donoff_190

YARA detection rule by roadwy

TrojanDownloader:O97M/Donoff,SIGNATURE_TYPE_MACROHSTR_EXT,02 00 02 00 04 00 00

rule TrojanDownloader_O97M_Donoff_190{
	meta:
		description = "TrojanDownloader:O97M/Donoff,SIGNATURE_TYPE_MACROHSTR_EXT,02 00 02 00 04 00 00 "
		
	strings :
		$a_01_0 = {70 69 2d 79 6d 2d 65 74 61 63 6f 6c 2f 6e 65 2f 6d 6f 63 2e 64 6e 69 6d 78 61 6d 2e 77 77 77 2f 2f 3a 73 70 74 74 68 6c 78 63 4a 78 77 4e 67 79 68 62 51 73 73 65 72 64 64 61 2d } 		$a_01_1 = {6d 74 67 76 6e 73 6f 2e 2e 2f 6f 2f 6f 77 54 69 2f 77 57 79 65 6d 50 6d 69 78 74 49 2f 69 70 77 32 64 3a 52 31 63 2f 46 63 6d 77 5a 74 67 2e 6c 2f 6f 61 68 65 70 } 		$a_01_2 = {6f 28 3b 20 20 29 45 2e 3b 2e 20 2d 70 61 6f 45 6f 20 5a 69 69 4d 69 2e 4d 4d 20 55 3b 54 53 76 35 73 39 73 6e 45 6c 64 49 64 3b 5a 7a 57 20 57 39 41 68 30 20 30 4e 55 6c 2f 77 20 77 65 73 6c 6e 53 6e 30 57 } 		$a_01_3 = {56 6e 20 6e 29 73 6e 7a 64 62 65 6c 67 64 78 2f 6e 2e 2e 6f 77 20 68 4b 6f 74 61 74 61 69 65 65 6f 2f 43 6f 61 65 3a 28 38 74 2f 6f 29 27 4f 67 63 68 6e 2e 72 57 68 2d 6d 62 6c 6f 69 70 79 31 65 65 44 27 28 6e 61 65 63 65 6e 74 61 74 77 6f 65 61 6c 20 74 69 33 4e 67 2e 70 67 54 72 6a 78 69 6f 53 74 2f 65 63 57 77 6e 7c 74 } 	condition:
		((#a_01_0  & 1)*1+(#a_01_1  & 1)*1+(#a_01_2  & 1)*1+(#a_01_3  & 1)*1) >=2
 
}

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

e2c964c6-1bf5-43c7-b189-970cc20c38e8

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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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