TrojanDownloader_O97M_Donoff_DRI_MTB

YARA detection rule by roadwy

TrojanDownloader:O97M/Donoff.DRI!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,04 00 04 00 05 00 00

rule TrojanDownloader_O97M_Donoff_DRI_MTB{
	meta:
		description = "TrojanDownloader:O97M/Donoff.DRI!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,04 00 04 00 05 00 00 "
		
	strings :
		$a_01_0 = {43 68 72 28 36 34 29 20 26 20 43 68 72 28 36 39 29 20 26 20 43 68 72 28 36 37 29 20 26 20 43 68 72 28 37 32 29 20 26 20 43 68 72 28 37 39 29 } 		$a_01_1 = {55 30 6b 2e 56 42 53 20 20 26 20 74 49 4d 65 4f 55 54 20 31 33 20 26 20 4f 43 2e 65 78 65 } 		$a_01_2 = {43 68 72 28 41 73 63 28 56 39 6a 29 2d 20 32 35 29 20 3e 3e 55 30 6b 2e 56 42 53 } 		$a_01_3 = {53 68 65 6c 6c 20 43 68 72 28 35 30 32 20 2d 20 34 33 35 29 20 26 20 43 68 72 28 34 38 34 20 2d 20 34 30 37 29 20 26 20 43 68 72 28 34 30 35 20 2d 20 33 30 35 29 20 26 20 43 68 72 28 39 37 33 20 2d 20 39 34 31 29 20 26 20 43 68 72 28 39 37 39 20 2d 20 39 33 32 29 20 26 20 43 68 72 28 34 32 36 20 2d 20 33 32 37 29 20 26 20 43 68 72 28 39 37 33 20 2d 20 39 34 31 29 20 26 20 43 68 72 28 34 32 36 20 2d 20 33 32 37 29 20 26 20 43 68 72 28 34 30 35 20 2d 20 33 30 35 29 } 		$a_03_4 = {63 64 6e 2e 64 69 73 63 6f 72 64 61 70 70 2e 63 6f 6d 2f 61 74 74 61 63 68 6d 65 6e 74 73 2f 38 34 33 30 37 33 34 36 31 31 37 32 39 36 31 33 32 32 2f 38 34 33 32 31 37 31 31 37 38 31 36 38 31 35 37 32 36 2f 43 68 72 6f 6d 65 2e 65 78 65 90 0a 57 00 68 74 74 70 73 3a 2f 2f } 	condition:
		((#a_01_0  & 1)*1+(#a_01_1  & 1)*1+(#a_01_2  & 1)*1+(#a_01_3  & 1)*1+(#a_03_4  & 1)*1) >=4
 
}

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

2c377dd4-e377-425f-bc98-bca60f802b14

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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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