TrojanDownloader_O97M_Obfuse_KV_MTB

YARA detection rule by roadwy

TrojanDownloader:O97M/Obfuse.KV!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,06 00 06 00 06 00 00

rule TrojanDownloader_O97M_Obfuse_KV_MTB{
	meta:
		description = "TrojanDownloader:O97M/Obfuse.KV!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,06 00 06 00 06 00 00 "
		
	strings :
		$a_01_0 = {3d 20 22 2e 6a 73 65 22 } 		$a_03_1 = {3d 20 54 72 69 6d 28 49 6e 74 28 53 74 72 28 56 61 6c 28 [0-16] 29 20 2f 20 31 30 30 30 30 30 30 29 29 29 } 		$a_03_2 = {54 65 78 74 3a 3d 22 3d 20 22 20 2b 20 [0-13] 20 2b 20 22 20 5c 2a 20 43 61 72 64 54 65 78 74 22 2c 20 5f } 		$a_01_3 = {3d 20 55 73 65 72 46 6f 72 6d 31 2e 54 65 78 74 42 6f 78 33 2e 54 65 78 74 } 		$a_01_4 = {4d 73 67 42 6f 78 20 22 4e 75 6d 62 65 72 20 74 6f 6f 20 6c 61 72 67 65 22 2c 20 76 62 4f 4b 4f 6e 6c 79 } 		$a_01_5 = {2e 43 72 65 61 74 65 54 65 78 74 46 69 6c 65 28 66 69 6c 65 32 73 61 76 72 73 61 76 65 2c 20 54 72 75 65 2c 20 54 72 75 65 29 } 	condition:
		((#a_01_0  & 1)*1+(#a_03_1  & 1)*1+(#a_03_2  & 1)*1+(#a_01_3  & 1)*1+(#a_01_4  & 1)*1+(#a_01_5  & 1)*1) >=6
 
}

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

d5fc68c8-d669-4731-826c-2676ca58fd0a

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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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