TrojanDropper_O97M_GraceWire_AO_MTB

YARA detection rule by roadwy

TrojanDropper:O97M/GraceWire.AO!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,05 00 05 00 05 00 00

rule TrojanDropper_O97M_GraceWire_AO_MTB{
	meta:
		description = "TrojanDropper:O97M/GraceWire.AO!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,05 00 05 00 05 00 00 "
		
	strings :
		$a_03_0 = {26 20 22 2e 64 [0-06] 6c [0-09] 6c 22 } 		$a_03_1 = {3d 20 57 68 65 72 65 54 6f 47 6f [0-12] 22 7a [0-09] 69 [0-09] 70 } 		$a_01_2 = {55 73 65 72 46 6f 72 6d 36 2e 54 65 78 74 42 6f 78 33 2e 54 61 67 } 		$a_01_3 = {2c 20 46 4d 4f 44 5f } 		$a_03_4 = {4f 6e 20 45 72 72 6f 72 20 52 65 73 75 6d 65 20 4e 65 78 74 [0-10] 44 69 6d } 	condition:
		((#a_03_0  & 1)*1+(#a_03_1  & 1)*1+(#a_01_2  & 1)*1+(#a_01_3  & 1)*1+(#a_03_4  & 1)*1) >=5
 
}

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

f5616970-e60a-49fc-96a6-792ee9c56890

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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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