TrojanDownloader_O97M_Obfuse_KDU_MTB

YARA detection rule by roadwy

TrojanDownloader:O97M/Obfuse.KDU!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,05 00 05 00 05 00 00

rule TrojanDownloader_O97M_Obfuse_KDU_MTB{
	meta:
		description = "TrojanDownloader:O97M/Obfuse.KDU!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,05 00 05 00 05 00 00 "
		
	strings :
		$a_01_0 = {67 4b 44 55 75 77 58 79 43 66 49 4e 73 56 4c 2e 6d 55 51 6e 58 64 77 52 78 4b 4c 42 41 53 4a 2e 43 6f 6e 74 72 6f 6c 54 69 70 54 65 78 74 20 3d 20 67 4b 44 55 75 77 58 79 43 66 49 4e 73 56 4c 2e 53 77 74 4d 65 62 52 42 45 73 69 6d 2e 54 61 67 } 		$a_01_1 = {67 4b 44 55 75 77 58 79 43 66 49 4e 73 56 4c 2e 48 71 4d 74 67 54 70 4c 6e 76 45 5a 6b 51 41 2e 43 6f 6e 74 72 6f 6c 54 69 70 54 65 78 74 20 3d 20 67 4b 44 55 75 77 58 79 43 66 49 4e 73 56 4c 2e 50 43 42 6f 75 4f 73 5a 56 61 59 6b 2e 54 61 67 } 		$a_01_2 = {67 4b 44 55 75 77 58 79 43 66 49 4e 73 56 4c 2e 4a 4f 61 63 79 49 76 6e 5a 55 4d 41 2e 41 75 74 6f 53 69 7a 65 20 3d 20 54 72 75 65 } 		$a_01_3 = {53 68 65 6c 6c 20 67 4b 44 55 75 77 58 79 43 66 49 4e 73 56 4c 2e 62 48 45 53 74 6b 51 57 64 6c 73 43 6d 59 70 47 50 44 63 77 4e 52 55 79 6e 2e 54 61 67 2c } 		$a_01_4 = {4d 73 67 42 6f 78 20 22 44 6f 63 75 6d 65 6e 74 20 63 61 6e 6e 6f 74 20 62 65 20 6f 70 65 6e 65 64 22 } 	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) >=5
 
}

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

c18132e4-b5da-42c1-bf96-ece11fcf2a7d

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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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