TrojanDropper_O97M_Obfuse_PHE_MTB

YARA detection rule by roadwy

TrojanDropper:O97M/Obfuse.PHE!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,07 00 07 00 07 00 00

rule TrojanDropper_O97M_Obfuse_PHE_MTB{
	meta:
		description = "TrojanDropper:O97M/Obfuse.PHE!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,07 00 07 00 07 00 00 "
		
	strings :
		$a_01_0 = {3d 20 43 68 72 28 6f 70 68 6a 69 20 2d 20 31 33 30 29 } 		$a_01_1 = {3d 20 22 57 53 43 72 69 70 74 2e 73 68 65 6c 6c 22 } 		$a_03_2 = {3d 20 43 72 65 61 74 65 4f 62 6a 65 63 74 28 [0-14] 29 } 		$a_01_3 = {27 68 6a 67 6a 67 20 66 66 68 67 35 36 34 35 6e 20 2f 2a 2f } 		$a_03_4 = {64 73 66 73 73 61 66 20 3d 20 22 73 64 66 73 61 66 22 90 0c 02 00 4f 6e 20 45 72 72 6f 72 20 52 65 73 75 6d 65 20 4e 65 78 74 90 0c 02 00 27 61 73 64 69 66 73 6a 64 20 61 6f 66 39 33 38 34 } 		$a_03_5 = {3d 20 6c 6a 6b 6e 6d 6e 28 [0-03] 29 20 26 20 6c 6a 6b 6e 6d 6e 28 [0-03] 29 20 26 20 6c 6a 6b 6e 6d 6e 28 [0-03] 29 20 26 20 6c 6a 6b 6e 6d 6e 28 [0-03] 29 20 26 20 6c 6a 6b 6e 6d 6e 28 [0-03] 29 20 26 20 6c 6a 6b 6e 6d 6e 28 [0-03] 29 20 26 20 6c 6a 6b 6e 6d 6e 28 [0-03] 29 20 26 20 6c 6a 6b 6e 6d 6e 28 [0-03] 29 20 26 20 6c 6a 6b 6e 6d 6e 28 [0-03] 29 20 26 20 6c 6a 6b 6e 6d 6e 28 [0-03] 29 20 26 } 		$a_03_6 = {41 45 45 41 52 77 42 [0-02] 41 45 45 41 [0-02] 42 [0-02] 41 45 49 41 [0-02] 42 42 41 45 63 41 [0-02] 42 42 41 47 [0-02] 41 [0-02] 42 43 41 44 [0-02] 41 51 51 42 [0-02] 41 44 [0-02] 41 [0-02] 51 41 69 41 43 6b 41 4b 51 42 38 41 [0-02] 6b 41 [0-02] 51 42 [0-02] 41 41 3d 3d } 	condition:
		((#a_01_0  & 1)*1+(#a_01_1  & 1)*1+(#a_03_2  & 1)*1+(#a_01_3  & 1)*1+(#a_03_4  & 1)*1+(#a_03_5  & 1)*1+(#a_03_6  & 1)*1) >=7
 
}

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

8cd4c49f-42b8-4375-852d-4e98c80a3e2c

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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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