TrojanDropper_O97M_GraceWire_DI_MTB

YARA detection rule by roadwy

TrojanDropper:O97M/GraceWire.DI!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,07 00 07 00 07 00 00

rule TrojanDropper_O97M_GraceWire_DI_MTB{
	meta:
		description = "TrojanDropper:O97M/GraceWire.DI!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,07 00 07 00 07 00 00 "
		
	strings :
		$a_01_0 = {50 52 50 20 3d 20 22 25 22 20 26 20 46 6f 72 6d 30 2e 54 65 78 74 42 6f 78 31 2e 54 61 67 } 		$a_01_1 = {54 42 54 20 3d 20 54 42 54 20 2b 20 22 22 20 2b 20 22 22 } 		$a_01_2 = {54 42 54 20 3d 20 54 42 54 20 2b 20 22 25 } 		$a_01_3 = {73 20 3d 20 22 4d 61 6a 6f 72 20 68 65 61 6c 74 68 20 70 72 6f 62 6c 65 6d 73 } 		$a_01_4 = {54 42 54 20 3d 20 54 53 50 49 50 2e 45 78 70 61 6e 64 45 6e 76 69 72 6f 6e 6d 65 6e 74 53 74 72 69 6e 67 73 28 54 42 54 29 } 		$a_01_5 = {73 20 3d 20 63 61 72 2e 43 68 65 63 6b 43 61 72 28 54 53 50 49 50 2c 20 46 6f 72 6d 30 2e 54 65 78 74 42 6f 78 33 2e 43 6f 6e 74 72 6f 6c 54 69 70 54 65 78 74 20 26 20 22 22 29 } 		$a_01_6 = {43 61 6c 6c 42 79 4e 61 6d 65 20 46 6f 72 6d 30 2e 54 65 78 74 42 6f 78 31 2c 20 22 54 61 67 22 2c 20 56 62 4c 65 74 2c 20 54 42 54 } 	condition:
		((#a_01_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) >=7
 
}

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

5598f574-4c72-448d-88d1-f0b542e53a85

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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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