TrojanDownloader_O97M_EncDoc_VI_MTB_4

YARA detection rule by roadwy

TrojanDownloader:O97M/EncDoc.VI!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,05 00 05 00 05 00 00

rule TrojanDownloader_O97M_EncDoc_VI_MTB_4{
	meta:
		description = "TrojanDownloader:O97M/EncDoc.VI!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,05 00 05 00 05 00 00 "
		
	strings :
		$a_01_0 = {66 75 6e 63 43 6f 6d 70 61 72 65 44 65 66 69 6e 65 20 26 20 4d 69 64 28 76 61 72 49 2c 20 28 63 6f 72 65 42 72 20 2d 20 69 29 2c 20 31 29 } 		$a_01_1 = {50 72 69 6e 74 20 23 31 2c 20 63 6f 72 65 44 65 66 69 6e 65 54 6f 28 22 64 74 31 79 6f 22 29 } 		$a_01_2 = {46 6f 72 20 69 20 3d 20 30 20 54 6f 20 63 6f 72 65 42 72 20 2d 20 31 } 		$a_01_3 = {4c 65 6e 28 76 61 72 49 29 } 		$a_01_4 = {56 42 41 2e 53 68 65 6c 6c 28 63 6f 6d 70 61 72 65 50 72 6f 63 48 74 6d 6c 20 26 20 63 6f 72 65 46 6f 72 43 6f 72 65 29 } 	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 ]]

dab94349-5311-483d-b9fc-4a64b512f04a

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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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