TrojanDownloader_O97M_Zloader_VA_MTB

YARA detection rule by roadwy

TrojanDownloader:O97M/Zloader.VA!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,08 00 08 00 08 00 00

rule TrojanDownloader_O97M_Zloader_VA_MTB{
	meta:
		description = "TrojanDownloader:O97M/Zloader.VA!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,08 00 08 00 08 00 00 "
		
	strings :
		$a_03_0 = {20 3d 20 4e 6f 74 68 69 6e 67 90 0c 02 00 44 6f 45 76 65 6e 74 73 90 0c 02 00 43 61 6c 6c 42 79 4e 61 6d 65 20 [0-06] 2c 20 [0-06] 2c 20 [0-08] 20 3d 20 4e 6f 74 68 69 6e 67 90 0c 02 00 44 6f 45 76 65 6e 74 73 } 		$a_01_1 = {55 73 65 72 46 6f 72 6d 31 2e 43 6f 6d 62 6f 42 6f 78 34 20 3d 20 55 73 65 72 46 6f 72 6d 31 2e 43 6f 6d 62 6f 42 6f 78 34 20 26 20 22 30 22 } 		$a_01_2 = {41 70 70 6c 69 63 61 74 69 6f 6e 2e 4f 6e 54 69 6d 65 20 4e 6f 77 20 2b 20 54 69 6d 65 53 65 72 69 61 6c 28 30 2c 20 30 2c 20 32 30 29 2c 20 22 54 68 69 73 44 6f 63 75 6d 65 6e 74 2e 6e 6e 6e 22 } 		$a_01_3 = {2e 73 68 65 65 74 73 28 31 29 } 		$a_03_4 = {50 72 69 76 61 74 65 20 53 75 62 20 55 73 65 72 46 6f 72 6d 5f 49 6e 69 74 69 61 6c 69 7a 65 28 29 [0-05] 43 61 6c 6c 42 79 4e 61 6d 65 20 41 63 74 69 76 65 44 6f 63 75 6d 65 6e 74 2e [0-05] 2c 20 41 63 74 69 76 65 44 6f 63 75 6d 65 6e 74 2e [0-05] 2c 20 56 62 4d 65 74 68 6f 64 2c 20 41 63 74 69 76 65 44 6f 63 75 6d 65 6e 74 2e } 		$a_01_5 = {53 75 62 20 6e 6e 6e 28 29 } 		$a_01_6 = {57 6f 72 6b 62 6f 6f 6b 73 2e 4f 70 65 6e 28 46 69 6c 65 4e 61 6d 65 3a 3d 55 73 65 72 46 6f 72 6d 32 2e 43 6f 6d 62 6f 42 6f 78 31 2c 20 50 61 73 73 77 6f 72 64 3a 3d 55 73 65 72 46 6f 72 6d 31 2e 43 6f 6d 62 6f 42 6f 78 32 29 } 		$a_01_7 = {2e 52 75 6e 20 22 54 68 69 73 44 6f 63 75 6d 65 6e 74 2e 6e 6e 6e 22 } 	condition:
		((#a_03_0  & 1)*1+(#a_01_1  & 1)*1+(#a_01_2  & 1)*1+(#a_01_3  & 1)*1+(#a_03_4  & 1)*1+(#a_01_5  & 1)*1+(#a_01_6  & 1)*1+(#a_01_7  & 1)*1) >=8
 
}

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

77ff7f04-be1a-4f85-bae0-fe73d252fc05

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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 ]]

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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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