TrojanDownloader_O97M_Obfuse_RSI_MTB

YARA detection rule by roadwy

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

rule TrojanDownloader_O97M_Obfuse_RSI_MTB{
	meta:
		description = "TrojanDownloader:O97M/Obfuse.RSI!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,04 00 04 00 04 00 00 "
		
	strings :
		$a_01_0 = {43 72 65 61 74 65 4f 62 6a 65 63 74 28 22 77 73 63 72 69 70 74 2e 73 68 65 6c 6c 22 29 } 		$a_01_1 = {43 61 6c 6c 20 63 35 61 33 32 34 34 65 2e 65 78 65 63 28 64 65 38 36 66 36 38 61 29 } 		$a_01_2 = {61 30 65 31 61 35 36 31 2e 4f 70 65 6e 20 22 47 45 54 22 2c 20 66 38 61 33 30 31 61 65 28 31 29 2c 20 46 61 6c 73 65 } 		$a_01_3 = {53 70 6c 69 74 28 66 30 62 61 38 34 31 64 2c 20 22 7c 22 29 } 	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 ]]

34a32e95-3748-49f8-8252-5845eccba6bf

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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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