TrojanDownloader_O97M_Obfuse_JAA_MTB

YARA detection rule by roadwy

TrojanDownloader:O97M/Obfuse.JAA!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,07 00 07 00 06 00 00

rule TrojanDownloader_O97M_Obfuse_JAA_MTB{
	meta:
		description = "TrojanDownloader:O97M/Obfuse.JAA!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,07 00 07 00 06 00 00 "
		
	strings :
		$a_00_0 = {34 33 20 33 61 20 35 63 20 35 35 20 37 33 20 36 35 20 37 32 20 37 33 20 35 63 20 35 30 20 37 35 20 36 32 20 36 63 20 36 39 20 36 33 20 35 63 20 37 33 20 37 36 20 36 33 20 36 38 20 36 66 20 37 33 20 37 34 20 33 33 20 33 32 20 32 65 20 36 35 20 37 38 20 36 35 } 		$a_00_1 = {34 64 20 36 39 20 36 33 20 37 32 20 36 66 20 37 33 20 36 66 20 36 36 20 37 34 20 32 65 20 35 38 20 34 64 20 34 63 20 34 38 20 35 34 20 35 34 20 35 30 } 		$a_00_2 = {35 37 20 35 33 20 36 33 20 37 32 20 36 39 20 37 30 20 37 34 20 32 65 20 35 33 20 36 38 20 36 35 20 36 63 20 36 63 } 		$a_03_3 = {43 68 72 24 28 56 61 6c 28 22 26 48 22 20 26 20 4d 69 64 24 28 [0-64] 2c 20 [0-64] 2c 20 32 29 } 		$a_00_4 = {4f 70 65 6e 20 22 47 22 20 2b 20 22 45 22 20 2b 20 22 54 22 2c 20 55 72 6c 2c 20 46 61 6c 73 65 } 		$a_00_5 = {41 63 74 69 76 65 43 65 6c 6c 2e 46 6f 72 6d 75 6c 61 52 31 43 31 20 3d 20 22 53 22 20 26 20 43 68 72 28 31 30 29 20 26 20 22 75 22 20 26 20 43 68 72 28 31 30 29 20 26 20 22 6d 22 20 26 20 43 68 72 28 31 30 29 20 26 20 22 72 22 20 26 20 43 68 72 28 31 30 29 20 26 20 22 72 22 20 26 20 43 68 72 28 31 30 29 20 26 20 22 79 22 } 	condition:
		((#a_00_0  & 1)*2+(#a_00_1  & 1)*1+(#a_00_2  & 1)*1+(#a_03_3  & 1)*1+(#a_00_4  & 1)*1+(#a_00_5  & 1)*1) >=7
 
}

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

4ba023f4-9b82-44ec-a277-7da9c102f842

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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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