Trojan_O97M_Obfuse_BM

YARA detection rule by roadwy

Trojan:O97M/Obfuse.BM,SIGNATURE_TYPE_MACROHSTR_EXT,04 00 04 00 05 00 00

rule Trojan_O97M_Obfuse_BM{
	meta:
		description = "Trojan:O97M/Obfuse.BM,SIGNATURE_TYPE_MACROHSTR_EXT,04 00 04 00 05 00 00 "
		
	strings :
		$a_00_0 = {41 74 74 72 69 62 75 74 65 20 56 42 5f 4e 61 6d 65 20 3d 20 22 6b 61 69 70 77 55 7a 77 42 22 } 		$a_00_1 = {56 42 5f 4e 61 6d 65 20 3d 20 22 62 77 69 4f 6e 69 69 7a 56 42 68 22 } 		$a_00_2 = {53 75 62 20 41 75 74 6f 4f 70 65 6e 28 29 } 		$a_02_3 = {3d 20 22 22 20 2b 20 90 12 08 00 20 2b 20 90 12 08 00 20 2b 20 41 63 74 69 76 65 44 6f 63 75 6d 65 6e 74 2e 4e 61 6d 65 20 2b 20 90 12 08 00 20 2b 20 90 12 09 00 } 		$a_02_4 = {49 66 20 44 69 72 28 90 12 08 00 29 20 3d 20 22 22 20 54 68 65 6e } 	condition:
		((#a_00_0  & 1)*1+(#a_00_1  & 1)*1+(#a_00_2  & 1)*1+(#a_02_3  & 1)*1+(#a_02_4  & 1)*1) >=4
 
}

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

5d2d3fd6-d79b-4fa8-adde-63dd3c472c42

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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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