TrojanDownloader_O97M_Donoff_SMB_MTB_2

YARA detection rule by roadwy

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

rule TrojanDownloader_O97M_Donoff_SMB_MTB_2{
	meta:
		description = "TrojanDownloader:O97M/Donoff.SMB!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,05 00 05 00 05 00 00 "
		
	strings :
		$a_01_0 = {68 70 41 59 78 62 76 51 2e 77 59 38 48 6b 52 74 54 6c 51 78 37 5f 6d 44 5f 5f 38 75 6f } 		$a_01_1 = {3d 20 43 72 65 61 74 65 4f 62 6a 65 63 74 28 55 5f 75 6e 69 75 52 79 59 49 70 6f 62 53 69 29 } 		$a_01_2 = {2e 52 75 6e 28 } 		$a_01_3 = {3d 20 43 68 72 28 47 5f 5f 5f 55 20 2d 20 36 30 29 } 		$a_01_4 = {57 77 42 54 41 46 6b 41 55 77 42 55 41 45 55 41 54 51 41 75 41 48 51 41 5a 51 42 59 41 46 51 41 4c 67 42 46 41 47 34 41 51 77 42 76 41 47 51 41 53 51 42 75 41 47 63 41 58 51 41 36 41 44 6f 41 64 51 42 4f 41 45 6b 41 59 77 42 50 41 45 51 41 52 51 41 75 41 45 63 41 5a 51 42 30 41 46 4d 41 64 41 42 79 41 47 6b 41 62 67 42 48 41 43 67 41 57 77 42 7a 41 48 6b 41 55 77 42 55 41 47 } 	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) >=5
 
}

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

ab73e5ce-9545-4994-81c9-d2e2326ad8f4

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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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