TrojanDropper_O97M_GraceWire_DX_MTB

YARA detection rule by roadwy

TrojanDropper:O97M/GraceWire.DX!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,08 00 08 00 08 00 00

rule TrojanDropper_O97M_GraceWire_DX_MTB{
	meta:
		description = "TrojanDropper:O97M/GraceWire.DX!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,08 00 08 00 08 00 00 "
		
	strings :
		$a_03_0 = {50 75 62 6c 69 63 20 44 65 63 6c 61 72 65 20 50 74 72 53 61 66 65 20 46 75 6e 63 74 69 6f 6e 20 [0-08] 20 4c 69 62 20 22 73 74 72 5f 6a 6f 69 6e 32 2e 64 6c 6c 22 20 28 29 20 41 73 20 49 6e 74 65 67 65 72 } 		$a_01_1 = {43 68 44 69 72 20 28 46 6f 72 6d 30 2e 54 65 78 74 42 6f 78 31 2e 54 61 67 20 2b 20 22 22 29 } 		$a_01_2 = {73 4f 66 62 6c 20 3d 20 22 22 22 22 20 2b 20 73 4f 66 62 6c 20 26 20 22 22 22 2c 22 22 22 } 		$a_01_3 = {52 61 6e 67 65 28 22 41 32 22 29 2e 46 6f 72 6d 75 6c 61 20 3d 20 22 24 30 22 } 		$a_01_4 = {52 61 6e 67 65 28 22 42 32 22 29 2e 46 6f 72 6d 75 6c 61 20 3d 20 22 24 30 22 } 		$a_01_5 = {52 61 6e 67 65 28 22 43 32 22 29 2e 46 6f 72 6d 75 6c 61 20 3d 20 22 24 30 22 } 		$a_01_6 = {52 61 6e 67 65 28 22 44 32 22 29 2e 46 6f 72 6d 75 6c 61 20 3d 20 22 24 30 22 } 		$a_01_7 = {50 75 62 6c 69 63 20 53 75 62 20 56 69 73 74 61 51 28 57 68 65 72 65 54 6f 47 6f 29 } 	condition:
		((#a_03_0  & 1)*1+(#a_01_1  & 1)*1+(#a_01_2  & 1)*1+(#a_01_3  & 1)*1+(#a_01_4  & 1)*1+(#a_01_5  & 1)*1+(#a_01_6  & 1)*1+(#a_01_7  & 1)*1) >=8
 
}

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

30bd8453-2764-48d5-8320-30e98b815843

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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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