TrojanDropper_O97M_GraceWire_AL_MTB

YARA detection rule by roadwy

TrojanDropper:O97M/GraceWire.AL!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,04 00 04 00 04 00 00

rule TrojanDropper_O97M_GraceWire_AL_MTB{
	meta:
		description = "TrojanDropper:O97M/GraceWire.AL!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,04 00 04 00 04 00 00 "
		
	strings :
		$a_01_0 = {50 75 62 6c 69 63 20 46 75 6e 63 74 69 6f 6e 20 53 65 74 52 65 73 6f 75 72 63 65 42 79 74 65 73 28 6c 70 54 79 70 65 20 41 73 20 4c 6f 6e 67 2c 20 6c 70 49 44 20 41 73 20 4c 6f 6e 67 2c 20 6c 70 44 61 74 61 28 29 20 41 73 20 42 79 74 65 2c 20 6c 70 46 69 6c 65 20 41 73 20 53 74 72 69 6e 67 29 20 41 73 20 4c 6f 6e 67 } 		$a_01_1 = {53 65 74 20 46 75 63 6a 69 46 69 6c 6d 20 3d 20 43 72 65 61 74 65 4f 62 6a 65 63 74 28 22 57 53 63 72 69 22 20 2b 20 22 70 74 2e 53 68 65 6c 6c 22 29 } 		$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 20 3d 20 46 75 63 6a 69 46 69 6c 6d 2e 53 70 65 63 69 61 6c 46 6f 6c 64 65 72 73 28 55 73 65 72 46 6f 72 6d 36 2e 54 65 78 74 42 6f 78 33 2e 54 61 67 29 } 		$a_01_3 = {26 20 42 6c 6f 62 53 4e 20 26 20 42 6c 6f 62 43 6e 74 20 26 20 22 2f 22 20 26 20 4d 69 64 28 73 70 6c 69 74 74 65 73 74 28 50 74 72 29 2c 20 50 6f 73 45 6e 64 53 63 72 69 70 74 29 } 	condition:
		((#a_01_0  & 1)*1+(#a_01_1  & 1)*1+(#a_01_2  & 1)*1+(#a_01_3  & 1)*1) >=4
 
}

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

292752b2-c33f-4158-a8e3-cec890f6fa46

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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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