TrojanDownloader_O97M_Obfuse_IZ_MTB

YARA detection rule by roadwy

TrojanDownloader:O97M/Obfuse.IZ!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,03 00 03 00 03 00 00

rule TrojanDownloader_O97M_Obfuse_IZ_MTB{
	meta:
		description = "TrojanDownloader:O97M/Obfuse.IZ!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,03 00 03 00 03 00 00 "
		
	strings :
		$a_01_0 = {3d 20 22 63 6d 44 20 2f 43 20 6d 53 69 45 5e 58 5e 65 43 20 22 20 26 20 43 68 72 28 31 37 34 20 2d 20 31 32 37 29 20 26 20 43 68 72 28 31 38 37 20 2d 20 38 32 29 20 26 20 43 68 72 28 33 32 35 20 2d 20 32 39 33 29 20 26 20 43 68 72 28 31 35 39 20 2d 20 35 35 29 20 26 20 43 68 72 28 34 34 31 20 2d 20 33 32 35 29 20 26 20 43 68 72 28 32 35 30 20 2d 20 31 33 34 29 20 26 20 43 68 72 28 32 39 39 20 2d 20 31 38 37 29 20 26 20 43 68 72 28 34 30 31 20 2d 20 33 34 33 29 20 26 20 43 68 72 28 32 33 38 20 2d 20 31 39 31 29 20 26 } 		$a_01_1 = {2e 52 75 6e } 		$a_01_2 = {3d 20 22 57 53 43 52 69 70 74 2e 73 48 45 4c 6c 22 } 	condition:
		((#a_01_0  & 1)*1+(#a_01_1  & 1)*1+(#a_01_2  & 1)*1) >=3
 
}

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

42f493ff-4ee6-4ac3-9198-0acff429badd

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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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