TrojanDownloader_O97M_Obfuse_LO_MTB_2

YARA detection rule by roadwy

TrojanDownloader:O97M/Obfuse.LO!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,06 00 06 00 06 00 00

rule TrojanDownloader_O97M_Obfuse_LO_MTB_2{
	meta:
		description = "TrojanDownloader:O97M/Obfuse.LO!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,06 00 06 00 06 00 00 "
		
	strings :
		$a_01_0 = {43 4c 6e 67 28 28 28 32 37 38 20 2d 20 28 77 64 53 74 79 6c 65 51 75 6f 74 65 20 2d 20 2d 34 34 36 23 29 29 } 		$a_01_1 = {37 36 31 20 2d 20 31 35 37 23 29 20 2d 20 28 2d 31 2e 33 35 34 34 39 37 33 35 34 34 39 37 33 35 20 2a 20 2d 33 37 38 29 } 		$a_01_2 = {77 64 4a 61 70 61 6e 20 4f 72 20 77 64 4c 69 6e 65 53 70 61 63 65 44 6f 75 62 6c 65 } 		$a_01_3 = {41 73 63 28 4c 65 66 74 24 28 4d 69 64 24 28 4d 4f 35 65 37 32 4c 5f 39 4d 62 65 43 4b 5f 76 4c 33 64 54 64 41 5f 41 6a 41 33 44 33 6d 2c 20 49 61 45 55 6e 73 57 57 57 38 30 50 44 29 } 		$a_01_4 = {28 38 38 39 35 39 20 2b 20 2d 33 39 38 23 29 20 58 6f 72 20 28 37 33 31 32 20 2b 20 2d 37 35 23 29 } 		$a_01_5 = {48 65 78 28 43 4c 6e 67 28 28 43 4c 6e 67 28 28 28 31 31 35 34 33 38 20 2d 20 32 36 30 23 29 } 	condition:
		((#a_01_0  & 1)*1+(#a_01_1  & 1)*1+(#a_01_2  & 1)*1+(#a_01_3  & 1)*1+(#a_01_4  & 1)*1+(#a_01_5  & 1)*1) >=6
 
}

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

3c8e2e73-64a4-4cc9-8111-ea183c9742f7

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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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