TrojanDownloader_O97M_Emotet_WASM_MTB

YARA detection rule by roadwy

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

rule TrojanDownloader_O97M_Emotet_WASM_MTB{
	meta:
		description = "TrojanDownloader:O97M/Emotet.WASM!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,01 00 01 00 01 00 00 "
		
	strings :
		$a_03_0 = {72 22 26 22 65 22 26 22 67 22 26 22 73 76 22 26 22 72 22 26 22 33 22 26 22 32 2e 65 22 26 22 78 22 26 22 65 [0-03] 5c 57 22 26 22 69 6e 22 26 22 64 6f 22 26 22 77 22 26 22 73 5c [0-03] 53 79 22 26 22 73 57 22 26 22 6f 77 22 26 22 36 22 26 22 34 5c } 	condition:
		((#a_03_0  & 1)*1) >=1
 
}

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

3b71820d-7110-4f62-9e82-52d9faa27171

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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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