TrojanDownloader_O97M_Emotet_RVAA_MTB

YARA detection rule by roadwy

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

rule TrojanDownloader_O97M_Emotet_RVAA_MTB{
	meta:
		description = "TrojanDownloader:O97M/Emotet.RVAA!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,04 00 04 00 04 00 00 "
		
	strings :
		$a_01_0 = {48 57 78 49 48 68 76 20 3d 20 43 61 6c 6c 42 79 4e 61 6d 65 28 73 62 51 72 4b 57 65 2c 20 74 67 63 41 6d 63 2c 20 31 2c 20 75 41 73 42 29 } 		$a_01_1 = {4d 69 64 28 43 69 61 2c 20 6a 58 45 46 28 71 79 29 2c 20 31 29 } 		$a_01_2 = {43 61 6c 6c 42 79 4e 61 6d 65 20 64 6c 6c 42 52 75 2c 20 6d 44 43 45 72 2c 20 31 2c 20 79 47 67 66 4f 2e 49 74 65 6d 73 2c 20 34 } 		$a_01_3 = {41 75 74 6f 4f 70 65 6e 28 29 } 	condition:
		((#a_01_0  & 1)*1+(#a_01_1  & 1)*1+(#a_01_2  & 1)*1+(#a_01_3  & 1)*1) >=4
 
}

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

01c57e62-d319-4c3a-abce-6ea1c412d699

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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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