TrojanDownloader_O97M_Obfuse_RVF_MTB

YARA detection rule by roadwy

TrojanDownloader:O97M/Obfuse.RVF!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,05 00 05 00 07 00 00

rule TrojanDownloader_O97M_Obfuse_RVF_MTB{
	meta:
		description = "TrojanDownloader:O97M/Obfuse.RVF!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,05 00 05 00 07 00 00 "
		
	strings :
		$a_02_0 = {2e 52 75 6e 20 22 54 68 69 73 44 6f 63 75 6d 65 6e 74 2e 22 20 26 20 22 [0-06] 22 } 		$a_02_1 = {53 65 74 20 [0-05] 20 3d 20 55 73 65 72 46 6f 72 6d 31 2e 43 6f 6e 74 72 6f 6c 73 2e 41 64 64 28 22 46 6f 72 6d 73 2e 43 6f 6d 62 6f 42 6f 78 2e 31 22 29 } 		$a_02_2 = {43 61 6c 6c 42 79 4e 61 6d 65 20 43 72 65 61 74 65 4f 62 6a 65 63 74 28 [0-05] 29 2c 20 [0-06] 2c 20 31 2c 20 } 		$a_02_3 = {53 65 74 20 [0-05] 20 3d 20 [0-02] 2e 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_00_4 = {2e 44 6f 63 75 6d 65 6e 74 73 2e 4f 70 65 6e 20 41 63 74 69 76 65 44 6f 63 75 6d 65 6e 74 2e 46 75 6c 6c 4e 61 6d 65 2c 20 52 65 61 64 4f 6e 6c 79 3a 3d 54 72 75 65 } 		$a_02_5 = {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 22 20 26 20 22 [0-06] 22 } 		$a_00_6 = {43 65 6c 6c 73 28 32 34 34 2c 20 31 31 29 2e 56 61 6c 75 65 } 	condition:
		((#a_02_0  & 1)*1+(#a_02_1  & 1)*1+(#a_02_2  & 1)*1+(#a_02_3  & 1)*1+(#a_00_4  & 1)*1+(#a_02_5  & 1)*1+(#a_00_6  & 1)*1) >=5
 
}

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

79926036-05eb-4784-84ac-f57dff049ffd

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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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