TrojanDownloader_O97M_Donoff_186

YARA detection rule by roadwy

TrojanDownloader:O97M/Donoff,SIGNATURE_TYPE_MACROHSTR_EXT,07 00 07 00 07 00 00

rule TrojanDownloader_O97M_Donoff_186{
	meta:
		description = "TrojanDownloader:O97M/Donoff,SIGNATURE_TYPE_MACROHSTR_EXT,07 00 07 00 07 00 00 "
		
	strings :
		$a_01_0 = {4f 78 69 49 72 61 4e 6c 70 43 6d 78 56 66 20 3d 20 28 26 48 33 45 46 20 2b 20 32 38 39 32 20 2d 20 26 48 46 33 41 29 } 		$a_01_1 = {42 67 57 45 67 68 67 51 6a 58 64 4f 59 20 3d 20 28 26 48 33 45 46 20 2b 20 32 38 39 32 20 2d 20 26 48 46 33 41 29 } 		$a_01_2 = {71 58 44 65 61 6f 76 7a 20 3d 20 4c 65 6e 42 28 6c 50 79 66 78 77 29 } 		$a_01_3 = {44 6f 20 57 68 69 6c 65 20 6d 79 65 6a 4d 6a 63 48 75 4e 20 3c 3d 20 71 58 44 65 61 6f 76 7a } 		$a_01_4 = {53 56 67 75 6e 50 52 20 3d 20 53 56 67 75 6e 50 52 20 26 20 43 68 72 28 41 73 63 42 28 4d 69 64 42 28 6c 50 79 66 78 77 2c 20 6d 79 65 6a 4d 6a 63 48 75 4e 2c 20 31 29 29 29 } 		$a_01_5 = {49 66 20 42 67 57 45 67 68 67 51 6a 58 64 4f 59 20 3e 20 33 30 30 20 54 68 65 6e } 		$a_01_6 = {49 66 20 4f 78 69 49 72 61 4e 6c 70 43 6d 78 56 66 20 3e 20 34 30 20 2a 20 28 26 48 32 30 20 2b 20 31 31 34 32 20 2d 20 26 48 34 39 31 29 20 54 68 65 6e } 	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+(#a_01_5  & 1)*1+(#a_01_6  & 1)*1) >=7
 
}

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

e8622147-9b35-4cf6-acfa-46827989f02b

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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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