TrojanDownloader_O97M_Ursnif_AL_MTB

YARA detection rule by roadwy

TrojanDownloader:O97M/Ursnif.AL!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,07 00 07 00 07 00 00

rule TrojanDownloader_O97M_Ursnif_AL_MTB{
	meta:
		description = "TrojanDownloader:O97M/Ursnif.AL!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,07 00 07 00 07 00 00 "
		
	strings :
		$a_01_0 = {3d 20 43 68 72 28 31 30 30 20 2b 20 31 30 20 2b 20 35 29 20 2b 20 22 68 22 20 2b 20 22 65 6c 6c 22 } 		$a_01_1 = {2e 43 6f 6e 74 72 6f 6c 73 28 31 29 2e 54 65 78 74 } 		$a_01_2 = {2e 43 6f 6e 74 72 6f 6c 73 28 32 20 2d 20 31 20 2d 20 31 29 } 		$a_01_3 = {2e 4f 70 65 6e } 		$a_03_4 = {50 72 69 6e 74 20 23 ?? 2c 20 [0-50] 2e 54 65 78 74 } 		$a_01_5 = {43 6c 6f 73 65 20 23 } 		$a_01_6 = {53 75 62 20 41 75 74 6f 4f 70 65 6e 28 29 } 	condition:
		((#a_01_0  & 1)*1+(#a_01_1  & 1)*1+(#a_01_2  & 1)*1+(#a_01_3  & 1)*1+(#a_03_4  & 1)*1+(#a_01_5  & 1)*1+(#a_01_6  & 1)*1) >=7
 
}

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

740527c6-e37b-438c-95d2-8c4ff60da7de

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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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