TrojanDownloader_O97M_Obfuse_RSER_MTB

YARA detection rule by roadwy

TrojanDownloader:O97M/Obfuse.RSER!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,03 00 03 00 03 00 00

rule TrojanDownloader_O97M_Obfuse_RSER_MTB{
	meta:
		description = "TrojanDownloader:O97M/Obfuse.RSER!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,03 00 03 00 03 00 00 "
		
	strings :
		$a_01_0 = {43 61 6c 6c 20 73 63 68 72 68 63 75 4e } 		$a_01_1 = {74 42 59 71 71 78 6d 46 5a 20 3d 20 52 65 70 6c 61 63 65 28 74 42 59 71 71 78 6d 46 5a 2c 20 22 72 71 77 67 61 72 7a 69 6d 73 77 22 2c 20 22 22 29 } 		$a_03_2 = {77 73 68 2e 52 75 6e 20 46 67 62 56 34 35 67 20 26 20 74 42 59 71 71 78 6d 46 5a 2c 20 2d 38 37 90 0c 02 00 25 51 51 51 25 90 0c 02 00 45 6e 64 20 53 75 62 } 	condition:
		((#a_01_0  & 1)*1+(#a_01_1  & 1)*1+(#a_03_2  & 1)*1) >=3
 
}

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

b5d4599a-840d-4a6b-ad91-296cba7647d9

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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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