TrojanDropper_O97M_Obfuse_LY_MTB

YARA detection rule by roadwy

TrojanDropper:O97M/Obfuse.LY!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,05 00 05 00 05 00 00

rule TrojanDropper_O97M_Obfuse_LY_MTB{
	meta:
		description = "TrojanDropper:O97M/Obfuse.LY!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,05 00 05 00 05 00 00 "
		
	strings :
		$a_01_0 = {3d 20 41 63 74 69 76 65 44 6f 63 75 6d 65 6e 74 2e 41 74 74 61 63 68 65 64 54 65 6d 70 6c 61 74 65 2e 50 61 74 68 20 26 20 43 68 72 28 39 32 29 20 26 20 52 6e 64 20 26 20 22 2e 6a 73 22 } 		$a_01_1 = {4d 73 67 42 6f 78 20 22 48 69 22 } 		$a_01_2 = {3d 20 55 73 65 72 46 6f 72 6d 32 2e 54 65 78 74 42 6f 78 33 2e 56 61 6c 75 65 } 		$a_01_3 = {2e 57 72 69 74 65 20 67 65 74 5f 54 45 58 54 5f 44 41 54 41 } 		$a_01_4 = {2e 53 68 65 6c 6c 45 78 65 63 75 74 65 20 73 74 61 72 74 57 61 72 46 69 6c 65 52 75 6e } 	condition:
		((#a_01_0  & 1)*1+(#a_01_1  & 1)*1+(#a_01_2  & 1)*1+(#a_01_3  & 1)*1+(#a_01_4  & 1)*1) >=5
 
}

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

8d2b2022-e420-4510-864c-901d26fef436

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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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