TrojanDownloader_O97M_Emotet_PK_MTB

YARA detection rule by roadwy

TrojanDownloader:O97M/Emotet.PK!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,05 00 05 00 05 00 00

rule TrojanDownloader_O97M_Emotet_PK_MTB{
	meta:
		description = "TrojanDownloader:O97M/Emotet.PK!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,05 00 05 00 05 00 00 "
		
	strings :
		$a_03_0 = {32 5f 50 72 [0-20] 6f [0-20] 63 [0-20] 65 [0-20] 73 [0-20] 73 [0-20] 22 } 		$a_03_1 = {2e 43 72 65 61 74 65 28 [0-25] 2c 20 [0-25] 2c 20 [0-25] 2c 20 [0-25] 29 } 		$a_03_2 = {2e 43 61 70 74 69 6f 6e 20 2b 20 [0-20] 2e [0-25] 2e 43 61 70 74 69 6f 6e 29 29 } 		$a_03_3 = {2b 20 52 65 70 6c 61 63 65 28 [0-20] 2c 20 22 [0-10] 22 2c 20 22 22 29 } 		$a_03_4 = {2e 43 61 70 74 69 6f 6e 20 2b 20 [0-20] 2e [0-20] 2e 43 61 70 74 69 6f 6e 20 2b 20 [0-20] 2e [0-20] 2e 43 61 70 74 69 6f 6e } 	condition:
		((#a_03_0  & 1)*1+(#a_03_1  & 1)*1+(#a_03_2  & 1)*1+(#a_03_3  & 1)*1+(#a_03_4  & 1)*1) >=5
 
}

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

d1a4963a-c996-4ff6-9355-b5731851e44d

Propose edits, view related rules, and engage with the community through comments.

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 ]]

Community Discussion