TrojanDownloader_O97M_Obfuse_HA_MTB

YARA detection rule by roadwy

TrojanDownloader:O97M/Obfuse.HA!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,07 00 07 00 07 00 00

rule TrojanDownloader_O97M_Obfuse_HA_MTB{
	meta:
		description = "TrojanDownloader:O97M/Obfuse.HA!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,07 00 07 00 07 00 00 "
		
	strings :
		$a_00_0 = {3d 20 45 6e 76 69 72 6f 6e 28 72 72 72 72 72 29 20 26 20 78 78 78 78 78 78 78 78 78 78 } 		$a_00_1 = {53 68 65 6c 6c 6e 64 69 72 4f 62 6a 20 41 73 20 53 68 65 6c 6c 33 32 2e 53 68 65 6c 6c } 		$a_00_2 = {42 79 70 61 73 73 20 2d 77 69 6e 64 6f 77 73 74 79 6c 65 20 68 69 64 64 65 6e 20 2d 46 69 6c 65 } 		$a_00_3 = {53 68 65 6c 6c 4f 62 6a 2e 53 68 65 6c 6c 45 78 65 63 75 74 65 20 65 65 } 		$a_00_4 = {66 73 2e 43 72 65 61 74 65 54 65 78 74 46 69 6c 65 28 50 74 } 		$a_00_5 = {67 31 20 3d 20 22 47 6e 6d 6d 62 6e 66 68 68 66 67 66 67 67 67 67 3d 3d 3d } 		$a_00_6 = {53 74 72 69 6e 67 28 31 2c 20 78 36 29 20 2b 20 22 2e 22 20 2b 20 53 74 72 69 6e 67 28 31 2c 20 78 37 29 } 	condition:
		((#a_00_0  & 1)*1+(#a_00_1  & 1)*1+(#a_00_2  & 1)*1+(#a_00_3  & 1)*1+(#a_00_4  & 1)*1+(#a_00_5  & 1)*1+(#a_00_6  & 1)*1) >=7
 
}

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

67b49cec-7ff5-41e3-a6a7-c9d909981199

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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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