TrojanDownloader_O97M_Emotet_TO_MTB

YARA detection rule by roadwy

TrojanDownloader:O97M/Emotet.TO!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,04 00 04 00 04 00 00

rule TrojanDownloader_O97M_Emotet_TO_MTB{
	meta:
		description = "TrojanDownloader:O97M/Emotet.TO!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,04 00 04 00 04 00 00 "
		
	strings :
		$a_03_0 = {44 6f 20 57 68 69 6c 65 20 [0-18] 2e 43 72 65 61 74 65 28 [0-18] 20 26 20 90 05 0f 06 41 2d 5a 61 2d 7a 2c } 		$a_03_1 = {2e 43 6f 6e 74 72 6f 6c 54 69 70 54 65 78 74 [0-01] 20 2b 20 90 05 0f 06 41 2d 5a 61 2d 7a 2e } 		$a_03_2 = {3d 20 53 70 6c 69 74 28 [0-20] 20 20 2b 20 4c 54 72 69 6d 28 4c 54 72 69 6d 28 90 05 0f 06 41 2d 5a 61 2d 7a 2e } 		$a_03_3 = {4a 6f 69 6e 28 [0-30] 2c 20 22 22 29 } 	condition:
		((#a_03_0  & 1)*1+(#a_03_1  & 1)*1+(#a_03_2  & 1)*1+(#a_03_3  & 1)*1) >=4
 
}

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

a7ec39dd-421f-4f6a-8701-2a9b1f0475c0

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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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