TrojanDownloader_O97M_Emotet_OU_MTB

YARA detection rule by roadwy

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

rule TrojanDownloader_O97M_Emotet_OU_MTB{
	meta:
		description = "TrojanDownloader:O97M/Emotet.OU!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,04 00 04 00 04 00 00 "
		
	strings :
		$a_03_0 = {3a 57 69 6e [0-20] 33 [0-20] 32 [0-20] 5f [0-20] 50 [0-20] 72 [0-20] 6f [0-20] 63 [0-20] 65 [0-20] 73 [0-20] 73 [0-20] 22 2c 20 [0-15] 2c 20 [0-10] 29 } 		$a_03_1 = {2e 43 72 65 61 74 65 28 [0-15] 2c 20 [0-15] 2c 20 [0-15] 2c 20 [0-15] 29 } 		$a_03_2 = {3d 20 52 65 70 6c 61 63 65 28 [0-45] 2c 20 [0-45] 2c 20 22 22 29 } 		$a_01_3 = {30 2c 20 30 2c 20 4d 53 46 6f 72 6d 73 2c 20 43 6f 6d 6d 61 6e 64 42 75 74 74 6f 6e 22 } 	condition:
		((#a_03_0  & 1)*1+(#a_03_1  & 1)*1+(#a_03_2  & 1)*1+(#a_01_3  & 1)*1) >=4
 
}

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

7424077d-cf6d-489c-b7cf-badda53854ed

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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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