TrojanDownloader_O97M_Obfuse_RVAU_MTB

YARA detection rule by roadwy

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

rule TrojanDownloader_O97M_Obfuse_RVAU_MTB{
	meta:
		description = "TrojanDownloader:O97M/Obfuse.RVAU!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 54 6e 56 30 63 77 28 22 31 33 36 31 32 32 31 32 37 31 32 36 31 32 30 31 32 36 31 33 33 31 33 32 30 37 35 22 29 29 2e 47 65 74 28 54 6e 56 30 63 77 28 22 31 30 34 31 32 32 31 32 37 30 36 38 30 36 37 31 31 32 30 39 37 31 33 31 31 32 38 31 31 36 31 31 38 31 33 32 31 33 32 22 29 29 2e 43 72 65 61 74 65 } 		$a_01_1 = {4c 6f 6f 70 20 57 68 69 6c 65 20 4c 65 6e 28 54 57 6c 73 61 77 29 20 3e 20 30 } 		$a_01_2 = {43 68 72 28 51 6d 56 6c 64 48 4d 20 2d 20 31 37 29 } 		$a_01_3 = {44 6f 63 75 6d 65 6e 74 5f 4f 70 65 6e 28 29 0d 0a 20 20 20 20 4d 79 4d 61 63 72 6f } 	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 ]]

e3d7afba-0f15-41c7-b299-aa8909e53545

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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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