TrojanDownloader_O97M_Obfuse_RVBJ_MTB

YARA detection rule by roadwy

TrojanDownloader:O97M/Obfuse.RVBJ!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,03 00 03 00 03 00 00

rule TrojanDownloader_O97M_Obfuse_RVBJ_MTB{
	meta:
		description = "TrojanDownloader:O97M/Obfuse.RVBJ!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,03 00 03 00 03 00 00 "
		
	strings :
		$a_01_0 = {61 62 6d 61 67 71 61 63 77 62 6d 61 68 6d 61 7a 61 62 6d 61 63 61 61 70 71 61 67 61 63 69 61 7a 67 62 7a 61 67 79 61 7a 61 62 6e 61 67 67 61 7a 67 62 6b 61 67 71 61 7a 67 62 6e 61 67 67 61 69 67 61 37 61 61 3d 3d } 		$a_01_1 = {73 68 65 6c 6c 28 6e 72 61 70 6f 69 6e 66 2c 34 2f 38 2a 73 69 6e 28 30 29 29 27 30 30 30 30 65 6e 64 73 75 62 } 		$a_01_2 = {64 6f 63 75 6d 65 6e 74 5f 6f 70 65 6e 28 29 63 61 6c 6c 73 61 71 65 76 76 68 79 69 65 6e 64 73 75 62 } 	condition:
		((#a_01_0  & 1)*1+(#a_01_1  & 1)*1+(#a_01_2  & 1)*1) >=3
 
}

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

af923eb1-4a3d-4fa8-a70f-643dc7b7287f

Propose edits, view related rules, and engage with the community through comments.

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 ]]

Community Discussion