TrojanDownloader_O97M_Obfuse_HP_MTB

YARA detection rule by roadwy

TrojanDownloader:O97M/Obfuse.HP!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,02 00 02 00 02 00 00

rule TrojanDownloader_O97M_Obfuse_HP_MTB{
	meta:
		description = "TrojanDownloader:O97M/Obfuse.HP!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,02 00 02 00 02 00 00 "
		
	strings :
		$a_01_0 = {3d 20 22 57 53 43 52 69 70 74 2e 73 48 45 4c 6c 22 } 		$a_01_1 = {3d 20 22 63 6d 44 20 2f 63 20 6d 73 49 45 5e 58 5e 45 63 20 22 20 26 20 43 68 72 28 32 34 35 20 2d 20 31 39 38 29 20 26 20 43 68 72 28 31 35 30 20 2d 20 34 35 29 20 26 20 43 68 72 28 31 38 32 20 2d 20 31 35 30 29 20 26 20 43 68 72 28 33 33 35 20 2d 20 32 33 31 29 20 26 20 43 68 72 28 34 36 37 20 2d 20 33 35 31 29 20 26 20 43 68 72 28 31 36 31 20 2d 20 34 35 29 20 26 20 43 68 72 28 32 36 37 20 2d 20 31 35 35 29 20 26 20 43 68 72 28 32 37 33 20 2d 20 32 31 35 29 20 26 20 43 68 72 28 35 35 20 2d 20 38 29 20 26 20 43 68 72 28 31 39 34 20 2d 20 31 34 37 29 20 26 20 43 68 72 28 34 31 35 20 2d 20 33 36 35 29 20 26 20 43 68 72 28 33 39 39 20 2d 20 33 34 38 29 20 26 } 	condition:
		((#a_01_0  & 1)*1+(#a_01_1  & 1)*1) >=2
 
}

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

cc4b7ae2-d6e1-4018-8152-dafef5890619

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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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