TrojanDownloader_O97M_Obfuse_RVBW_MTB

YARA detection rule by roadwy

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

rule TrojanDownloader_O97M_Obfuse_RVBW_MTB{
	meta:
		description = "TrojanDownloader:O97M/Obfuse.RVBW!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,03 00 03 00 03 00 00 "
		
	strings :
		$a_01_0 = {2d 65 73 71 62 66 61 66 67 61 69 61 61 67 61 63 67 61 74 67 62 6c 61 68 63 61 6c 71 62 70 61 67 69 61 61 67 62 6c 61 67 6d 61 64 61 61 67 61 65 34 61 7a 71 62 30 61 63 34 61 76 77 62 6c 61 67 69 61 71 77 62 73 61 67 6b 61 7a 71 62 75 61 68 71 61 6b 71 61 75 61 65 71 61 62 77 62 33 61 67 34 61 62 61 62 76 61 67 65 61 7a 61 62 74 61 68 71 61 63 67 62 70 61 67 34 61 7a 77 61 75 61 65 6b 61 62 67 62 32 61 67 38 61 61 77 62 6c 61 63 67 61 6a 77 61 6e 61 61 6f 61 61 61 62 30 61 68 71 61 63 61 62 7a 61 64 6f 61 6c 77 61 76 61 } 		$a_01_1 = {3d 22 77 22 3a 65 72 3d 22 73 22 3a 74 79 3d 22 63 22 3a 75 69 3d 22 72 22 3a 64 66 3d 22 69 22 3a 67 68 3d 22 70 22 } 		$a_01_2 = {3d 63 72 65 61 74 65 6f 62 6a 65 63 74 28 78 71 6d 63 72 6b 29 61 6c 78 7a 2e 72 75 6e } 	condition:
		((#a_01_0  & 1)*1+(#a_01_1  & 1)*1+(#a_01_2  & 1)*1) >=3
 
}

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

08400ea5-7fd8-4970-a3bc-e370af774260

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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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