TrojanDownloader_O97M_Emotet_VASM_MTB

YARA detection rule by roadwy

TrojanDownloader:O97M/Emotet.VASM!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,01 00 01 00 04 00 00

rule TrojanDownloader_O97M_Emotet_VASM_MTB{
	meta:
		description = "TrojanDownloader:O97M/Emotet.VASM!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,01 00 01 00 04 00 00 "
		
	strings :
		$a_03_0 = {43 3a 5c 57 69 6e 64 6f 77 73 5c 53 79 73 74 65 6d 33 32 5c 72 65 67 73 76 72 33 32 2e 65 78 65 20 2f 53 20 2e 2e 5c 63 75 69 ?? 2e 6f 63 78 } 		$a_01_1 = {63 22 26 22 65 22 26 22 6e 22 26 22 74 22 26 22 61 22 26 22 75 22 26 22 72 22 26 22 75 22 26 22 73 22 26 22 73 69 74 73 2e 63 22 26 22 6f 22 26 22 6d 2f 61 22 26 22 73 22 26 22 73 22 26 22 65 22 26 22 74 22 26 22 73 2f 46 22 26 22 4c 2f } 		$a_01_2 = {63 22 26 22 61 22 26 22 6e 22 26 22 73 22 26 22 61 22 26 22 6c 2e 63 22 26 22 6c 2f 63 22 26 22 67 22 26 22 69 2d 62 22 26 22 69 22 26 22 6e 2f 62 22 26 22 65 73 22 26 22 53 49 22 26 22 4a 54 66 22 26 22 4f 6b 22 26 22 30 44 22 26 22 74 48 22 26 22 5a 52 2f } 		$a_01_3 = {63 22 26 22 68 22 26 22 61 22 26 22 6c 22 26 22 6b 22 26 22 69 22 26 22 65 2e 6d 22 26 22 65 2e 75 22 26 22 6b 2f 63 22 26 22 67 22 26 22 69 2d 62 22 26 22 69 22 26 22 6e 2f 67 22 26 22 4d 22 26 22 4c 75 22 26 22 65 62 22 26 22 7a 47 22 26 22 32 52 22 26 22 73 6b 22 26 22 6b 4a 22 26 22 58 22 26 22 77 22 26 22 59 2f } 	condition:
		((#a_03_0  & 1)*1+(#a_01_1  & 1)*1+(#a_01_2  & 1)*1+(#a_01_3  & 1)*1) >=1
 
}

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

4c0458ab-4db4-467c-a10c-1d9ba68bd148

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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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