TrojanDownloader_O97M_Obfuse_VA_MTB_2

YARA detection rule by roadwy

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

rule TrojanDownloader_O97M_Obfuse_VA_MTB_2{
	meta:
		description = "TrojanDownloader:O97M/Obfuse.VA!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,05 00 05 00 05 00 00 "
		
	strings :
		$a_00_0 = {73 74 72 67 20 3d 20 73 74 72 67 20 26 20 77 72 64 20 26 20 } 		$a_00_1 = {53 44 77 66 20 3d 20 7a 61 77 67 48 43 56 6d 41 77 67 48 43 56 6d 41 67 20 26 20 63 37 20 26 20 77 65 67 6a 68 20 26 20 75 79 74 69 65 72 20 26 20 63 31 30 20 26 20 75 79 74 69 65 72 20 26 20 65 77 67 48 43 56 6d 41 64 74 68 67 20 26 20 63 31 31 20 26 20 22 3a 22 20 26 20 7a 61 77 67 48 43 56 6d 41 77 67 48 43 56 6d 41 67 20 26 20 63 37 20 26 20 77 65 67 6a 68 20 26 20 6e 46 4b 50 62 51 28 22 20 33 20 32 20 5f 22 29 20 26 20 6e 46 4b 50 62 51 28 22 20 50 20 72 20 6f 20 63 20 65 20 73 20 73 20 22 29 } 		$a_00_2 = {6e 7a 46 4e 2e 43 72 65 61 74 65 28 4d 58 42 54 76 2c 20 4e 75 6c 6c 2c 20 4e 75 6c 6c 2c 20 69 6e 74 50 72 6f 63 65 73 73 49 44 29 } 		$a_00_3 = {6e 46 4b 50 62 51 20 3d 20 52 65 70 6c 61 63 65 28 77 6a 6b 77 65 72 2c 20 22 20 22 2c 20 22 22 2c 20 31 2c 20 2d 31 29 } 		$a_00_4 = {62 6f 6c 6f 74 61 20 3d 20 62 20 26 20 63 20 26 20 } 	condition:
		((#a_00_0  & 1)*1+(#a_00_1  & 1)*1+(#a_00_2  & 1)*1+(#a_00_3  & 1)*1+(#a_00_4  & 1)*1) >=5
 
}

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

9e88b8ac-f584-47de-a989-6e7fd9f79408

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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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