TrojanDownloader_O97M_Donoff_AR

YARA detection rule by roadwy

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

rule TrojanDownloader_O97M_Donoff_AR{
	meta:
		description = "TrojanDownloader:O97M/Donoff.AR,SIGNATURE_TYPE_MACROHSTR_EXT,05 00 05 00 05 00 00 "
		
	strings :
		$a_00_0 = {4c 69 62 20 22 75 72 6c 6d 6f 6e 22 20 41 6c 69 61 73 20 22 55 52 4c 44 6f 77 6e 6c 6f 61 64 54 6f 46 69 6c 65 41 22 20 28 42 79 56 61 6c } 		$a_00_1 = {20 54 6f 20 4c 65 6e 28 22 } 		$a_00_2 = {3d 20 4d 69 64 28 22 } 		$a_00_3 = {2e 45 78 70 61 6e 64 45 6e 76 69 72 6f 6e 6d 65 6e 74 53 74 72 69 6e 67 73 28 53 74 72 52 65 76 65 72 73 65 28 22 25 50 4d 45 54 25 22 29 29 20 2b } 		$a_00_4 = {3d 20 43 68 72 28 41 73 63 28 } 	condition:
		((#a_00_0  & 1)*1+(#a_00_1  & 1)*1+(#a_00_2  & 1)*1+(#a_00_3  & 1)*1+(#a_00_4  & 1)*1) >=5
 
}

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

efe7e375-29ef-41d9-b6e4-d605cfcbe81f

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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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