TrojanDownloader_O97M_Emotet_VRC_MTB

YARA detection rule by roadwy

TrojanDownloader:O97M/Emotet.VRC!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,03 00 03 00 03 00 00

rule TrojanDownloader_O97M_Emotet_VRC_MTB{
	meta:
		description = "TrojanDownloader:O97M/Emotet.VRC!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,03 00 03 00 03 00 00 "
		
	strings :
		$a_01_0 = {41 75 74 6f 4f 70 65 6e 20 4d 61 63 72 6f } 		$a_01_1 = {53 68 65 6c 6c 20 28 22 63 6d 64 20 2f 63 20 63 75 72 6c 20 66 69 6c 65 74 72 61 6e 73 66 65 72 2e 69 6f 2f 64 61 74 61 2d 70 61 63 6b 61 67 65 2f 41 75 4e 38 43 69 5a 50 2f 64 6f 77 6e 6c 6f 61 64 20 2d 2d 6f 75 74 70 75 74 20 70 2e 65 78 65 20 26 26 20 73 74 61 72 74 20 70 2e 65 78 65 22 29 } 		$a_01_2 = {53 68 65 6c 6c 20 28 41 20 26 20 4f 20 26 20 42 20 26 20 22 27 68 74 74 70 73 3a 2f 2f 6f 6e 65 64 72 69 76 65 2e 6c 69 76 65 2e 63 6f 6d 2f 64 6f 77 6e 6c 6f 61 64 3f 72 65 73 69 64 3d 35 39 32 36 31 43 37 45 34 31 42 36 34 37 38 41 25 32 31 32 31 35 26 61 75 74 68 6b 65 79 3d 21 41 49 4c 78 73 76 7a 6c 5a 62 6f 50 33 69 6f 27 20 2d 55 73 65 42 61 73 69 63 50 61 72 73 69 6e 67 29 2e 43 6f 6e 74 65 6e 74 20 7c 20 69 65 78 20 22 29 } 	condition:
		((#a_01_0  & 1)*1+(#a_01_1  & 1)*1+(#a_01_2  & 1)*1) >=3
 
}

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

1cdbdc27-f085-4485-8534-be44050a1865

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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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