TrojanDownloader_O97M_Obfuse_BBO_MTB

YARA detection rule by roadwy

TrojanDownloader:O97M/Obfuse.BBO!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,04 00 04 00 04 00 00

rule TrojanDownloader_O97M_Obfuse_BBO_MTB{
	meta:
		description = "TrojanDownloader:O97M/Obfuse.BBO!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,04 00 04 00 04 00 00 "
		
	strings :
		$a_01_0 = {45 6e 76 69 72 6f 6e 24 28 22 55 73 65 72 44 6f 6d 61 69 6e 22 29 20 26 20 22 5c 22 20 26 20 45 6e 76 69 72 6f 6e 24 28 22 43 6f 6d 70 75 74 65 72 4e 61 6d 65 22 29 20 26 20 22 5c 22 20 26 20 45 6e 76 69 72 6f 6e 24 28 22 55 73 65 72 6e 61 6d 65 22 29 } 		$a_01_1 = {3d 20 57 73 68 53 68 65 6c 6c 2e 45 78 65 63 28 22 74 61 73 6b 6b 69 6c 6c 20 2f 66 69 20 22 22 69 6d 61 67 65 6e 61 6d 65 20 65 71 20 6d 73 65 64 67 65 2e 65 78 65 22 22 22 29 } 		$a_01_2 = {3d 20 57 73 68 53 68 65 6c 6c 2e 45 78 65 63 28 22 74 61 73 6b 6b 69 6c 6c 20 2f 66 69 20 22 22 69 6d 61 67 65 6e 61 6d 65 20 65 71 20 69 65 78 70 6c 6f 72 65 72 2e 65 78 65 22 22 22 29 } 		$a_01_3 = {43 61 6c 6c 20 53 68 6f 77 5f 53 68 65 65 74 73 } 	condition:
		((#a_01_0  & 1)*1+(#a_01_1  & 1)*1+(#a_01_2  & 1)*1+(#a_01_3  & 1)*1) >=4
 
}

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

01c5d863-958c-4c94-ba26-2a9217346ee6

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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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