TrojanDownloader_O97M_Obfuse_SK_MTB_2

YARA detection rule by roadwy

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

rule TrojanDownloader_O97M_Obfuse_SK_MTB_2{
	meta:
		description = "TrojanDownloader:O97M/Obfuse.SK!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,06 00 06 00 06 00 00 "
		
	strings :
		$a_01_0 = {27 4d 73 67 42 6f 78 4d 73 67 42 6f 78 4d 73 67 42 6f 78 4d 73 67 42 6f 78 4d 73 67 42 6f 78 4d 73 67 42 6f 78 4d 73 67 42 6f 78 4d 73 67 42 6f 78 4d 73 67 42 6f 78 4d 73 67 42 6f 78 4d 73 67 42 6f 78 4d 73 67 42 6f 78 } 		$a_01_1 = {22 66 75 63 6b 22 } 		$a_01_2 = {22 79 6f 75 22 } 		$a_01_3 = {46 69 65 6c 64 53 74 72 20 3d 20 53 70 6c 69 74 28 54 6d 70 2c 20 22 2f 2f 2f 22 29 } 		$a_01_4 = {3d 20 43 68 72 28 22 26 48 22 20 26 20 4d 69 64 28 73 44 61 74 61 2c 20 69 43 68 61 72 2c 20 32 29 29 } 		$a_03_5 = {3d 20 6f 50 72 6f 63 65 73 73 2e 45 78 65 63 4d 65 74 68 6f 64 5f 28 73 48 65 78 44 65 63 6f 64 65 28 22 [0-18] 22 29 2c 20 6f 49 6e 50 61 72 61 6d 73 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_03_5  & 1)*1) >=6
 
}

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

6d488baa-8e3f-43c2-9b15-24efaa60c739

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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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