TrojanDownloader_O97M_Donoff_DRG_MTB

YARA detection rule by roadwy

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

rule TrojanDownloader_O97M_Donoff_DRG_MTB{
	meta:
		description = "TrojanDownloader:O97M/Donoff.DRG!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,04 00 04 00 04 00 00 "
		
	strings :
		$a_01_0 = {49 65 37 51 47 76 32 4c 46 66 69 42 4b 46 44 57 6d 4c 56 4e 77 5f 63 6f } 		$a_01_1 = {69 6f 73 61 64 66 6f 64 73 69 20 35 36 34 36 20 64 73 61 66 64 73 79 61 67 66 38 20 66 69 73 64 75 65 72 77 39 38 } 		$a_01_2 = {44 5f 5f 53 28 31 36 37 29 20 26 20 44 5f 5f 53 28 31 37 37 29 20 26 20 44 5f 5f 53 28 32 30 30 29 20 26 20 44 5f 5f 53 28 31 33 32 29 20 26 20 44 5f 5f 53 28 31 34 37 29 20 26 20 44 5f 5f 53 28 31 36 37 29 20 26 20 44 5f 5f 53 28 31 33 32 29 20 26 20 44 5f 5f 53 28 32 30 39 29 20 26 20 44 5f 5f 53 28 31 39 34 29 20 26 20 44 5f 5f 53 28 31 38 33 29 20 26 20 44 5f 5f 53 28 32 30 35 29 20 26 20 44 5f 5f 53 28 31 36 39 29 20 26 20 44 5f 5f 53 28 31 39 34 29 20 26 20 44 5f 5f 53 28 32 32 30 29 20 26 20 44 5f 5f 53 28 31 39 34 29 20 26 20 44 5f 5f 53 28 32 30 31 29 20 26 20 44 5f 5f 53 28 31 39 34 29 20 26 20 44 5f 5f 53 28 31 39 39 29 } 		$a_01_3 = {2e 52 75 6e 28 41 48 31 4c 72 5f 4d 54 45 47 53 73 44 70 6b 6b 78 54 41 32 76 35 5a 72 78 49 7a 57 5f 35 76 75 33 70 54 70 6d 52 5f 6c 70 5f 66 58 58 4d 57 61 7a 62 4f 78 78 74 5f 5f 73 4a 58 68 34 79 4f 4a } 	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 ]]

11ea8246-0291-40f3-b585-67e75d1b2676

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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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