TrojanDownloader_O97M_Obfuse_FED_MTB

YARA detection rule by roadwy

TrojanDownloader:O97M/Obfuse.FED!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,04 00 04 00 04 00 00

rule TrojanDownloader_O97M_Obfuse_FED_MTB{
	meta:
		description = "TrojanDownloader:O97M/Obfuse.FED!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,04 00 04 00 04 00 00 "
		
	strings :
		$a_00_0 = {35 37 20 35 33 20 36 33 20 37 32 20 36 39 20 37 30 20 37 34 20 32 45 20 35 33 20 36 38 20 36 35 20 36 43 20 36 43 22 29 29 2e 52 75 6e } 		$a_00_1 = {63 47 39 33 5a 58 4a 7a 61 47 56 73 62 43 35 6c 65 47 55 67 4c 57 56 34 5a 57 4e 31 64 47 6c 76 62 6e 42 76 62 47 6c 6a 65 53 42 69 65 58 42 68 63 33 4d 67 4c 56 63 67 53 47 6c 6b 5a 47 56 75 49 43 31 6a 62 32 31 74 59 57 35 6b 49 43 68 75 5a 58 63 74 62 32 4a 71 5a 57 4e 30 49 46 4e 35 63 33 52 6c 62 53 35 4f 5a 58 51 75 56 32 56 69 51 32 78 70 5a 57 35 30 4b 53 35 45 62 33 64 75 62 47 39 68 5a 45 5a 70 62 47 55 6f 4a 77 3d 3d } 		$a_00_2 = {4a 79 77 6b 5a 57 35 32 4f 6c 52 6c 62 58 41 72 4a 31 78 77 64 58 52 30 65 53 35 6c 65 47 55 6e 4b 54 73 6f 54 6d 56 33 4c 55 39 69 61 6d 56 6a 64 43 41 74 59 32 39 74 49 46 4e 6f 5a 57 78 73 4c 6b 46 77 63 47 78 70 59 32 46 30 61 57 39 75 4b 53 35 54 61 47 56 73 62 45 56 34 5a 57 4e 31 64 47 55 6f 4a 47 56 75 64 6a 70 55 5a 57 31 77 4b 79 64 63 63 48 56 30 64 48 6b 75 5a 58 68 6c 4a 79 6b 3d } 		$a_00_3 = {6e 47 72 6f 75 70 } 	condition:
		((#a_00_0  & 1)*1+(#a_00_1  & 1)*1+(#a_00_2  & 1)*1+(#a_00_3  & 1)*1) >=4
 
}

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

ec64bdfe-4fc2-4b9e-b42e-5d1670867390

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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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