TrojanDownloader_O97M_Obfuse_RVBE_MTB

YARA detection rule by roadwy

TrojanDownloader:O97M/Obfuse.RVBE!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,04 00 04 00 04 00 00

rule TrojanDownloader_O97M_Obfuse_RVBE_MTB{
	meta:
		description = "TrojanDownloader:O97M/Obfuse.RVBE!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,04 00 04 00 04 00 00 "
		
	strings :
		$a_01_0 = {47 65 74 4f 62 6a 65 63 74 28 43 65 6c 6c 73 28 31 30 36 2c 20 32 29 29 } 		$a_01_1 = {3d 20 74 38 67 30 66 2e 4f 70 65 6e 28 76 30 64 66 20 2b 20 22 5c 55 72 68 6a 67 2e 62 61 74 22 29 } 		$a_01_2 = {22 43 3a 5c 55 73 65 72 73 5c 22 20 2b 20 71 61 58 47 69 28 29 2e 4e 61 6d 65 73 70 61 63 65 28 55 53 45 52 5f 50 52 4f 46 49 4c 45 29 } 		$a_01_3 = {72 65 76 20 26 20 4d 69 64 28 73 2c 20 70 2c 20 31 29 } 	condition:
		((#a_01_0  & 1)*1+(#a_01_1  & 1)*1+(#a_01_2  & 1)*1+(#a_01_3  & 1)*1) >=4
 
}

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

3eaa2fab-c2b9-4e61-8145-8a47ed7e5dbb

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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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