TrojanDownloader_O97M_Donoff_AH

YARA detection rule by roadwy

TrojanDownloader:O97M/Donoff.AH,SIGNATURE_TYPE_MACROHSTR_EXT,04 00 04 00 04 00 00

rule TrojanDownloader_O97M_Donoff_AH{
	meta:
		description = "TrojanDownloader:O97M/Donoff.AH,SIGNATURE_TYPE_MACROHSTR_EXT,04 00 04 00 04 00 00 "
		
	strings :
		$a_01_0 = {66 72 6f 6d 41 72 72 28 29 20 41 73 20 56 61 72 69 61 6e 74 2c 20 4c 65 6e 4c 65 6e 20 41 73 20 49 6e 74 65 67 65 72 } 		$a_01_1 = {72 65 73 75 6c 74 20 3d 20 72 65 73 75 6c 74 20 26 20 43 68 72 28 66 72 6f 6d 41 72 72 28 69 29 20 2d 20 4c 65 6e 4c 65 6e 20 2b 20 69 20 2a 20 32 29 } 		$a_01_2 = {41 72 72 61 79 28 31 34 36 2c 20 31 35 36 2c 20 31 35 34 2c 20 31 34 38 2c 20 39 32 2c 20 37 39 } 		$a_01_3 = {2e 4f 70 65 6e 20 22 47 45 22 20 2b 20 66 69 67 61 72 6f 20 2b 20 22 54 22 2c 20 48 6c 6f 70 75 73 68 6b 61 2c 20 46 61 6c 73 65 } 	condition:
		((#a_01_0  & 1)*1+(#a_01_1  & 1)*1+(#a_01_2  & 1)*1+(#a_01_3  & 1)*1) >=4
 
}

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

69c15e51-2fb3-4ec7-b1c4-a1e3d7030c6e

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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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