TrojanDropper_O97M_GraceWire_EC_MTB_2

YARA detection rule by roadwy

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

rule TrojanDropper_O97M_GraceWire_EC_MTB_2{
	meta:
		description = "TrojanDropper:O97M/GraceWire.EC!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,07 00 07 00 07 00 00 "
		
	strings :
		$a_01_0 = {50 75 62 6c 69 63 20 44 65 63 6c 61 72 65 20 46 75 6e 63 74 69 6f 6e 20 63 6f 64 65 32 20 4c 69 62 20 22 6b 65 72 6e 65 6c 33 32 2e 64 6c 6c 22 20 41 6c 69 61 73 20 22 53 65 74 44 65 66 61 75 6c 74 44 6c 6c 44 69 72 65 63 74 6f 72 69 65 73 22 20 28 42 79 56 61 6c 20 44 69 72 65 63 74 6f 72 79 46 6c 61 67 73 20 41 73 20 4c 6f 6e 67 29 20 41 73 20 4c 6f 6e 67 } 		$a_03_1 = {41 63 74 69 76 65 57 6f 72 6b 62 6f 6f 6b 2e 53 61 76 65 41 73 20 57 68 65 72 65 54 6f 47 6f 2c 20 4c 6f 63 61 6c 3a 3d 46 61 6c 73 65 2c 20 46 69 6c 65 46 6f 72 6d 61 74 3a 3d 33 20 2a 20 37 20 2b 20 33 20 2a 20 37 20 2b 20 39 [0-08] 44 6f 45 76 65 6e 74 73 [0-08] 44 6f 45 76 65 6e 74 73 [0-08] 41 63 74 69 76 65 57 6f 72 6b 62 6f 6f 6b 2e 43 6c 6f 73 65 90 0c 02 00 44 6f 45 76 65 6e 74 73 } 		$a_01_2 = {50 75 62 6c 69 63 20 46 75 6e 63 74 69 6f 6e 20 45 78 43 68 61 6e 67 65 4d 6f 6e 65 79 28 29 } 		$a_01_3 = {4c 72 69 67 61 74 20 3d 20 55 73 65 72 46 6f 72 6d 31 2e 4c 61 62 65 6c 31 31 2e 54 61 67 } 		$a_01_4 = {52 61 6e 67 65 28 22 4c 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 4d 32 22 29 2e 46 6f 72 6d 75 6c 61 20 3d 20 22 30 22 } 		$a_01_6 = {52 61 6e 67 65 28 22 4e 32 22 29 2e 46 6f 72 6d 75 6c 61 20 3d 20 22 30 25 22 } 	condition:
		((#a_01_0  & 1)*1+(#a_03_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 ]]

0dfeed5e-677b-462e-94f2-24599bcde4bd

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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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