TrojanDownloader_O97M_Obfuse_RVAN_MTB

YARA detection rule by roadwy

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

rule TrojanDownloader_O97M_Obfuse_RVAN_MTB{
	meta:
		description = "TrojanDownloader:O97M/Obfuse.RVAN!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,03 00 03 00 03 00 00 "
		
	strings :
		$a_01_0 = {43 68 72 28 41 73 63 28 4d 69 64 28 43 75 56 61 75 69 48 70 38 2c 20 49 49 66 28 4a 36 39 70 6d 75 41 76 39 20 4d 6f 64 20 4c 65 6e 28 43 75 56 61 75 69 48 70 38 29 } 		$a_01_1 = {44 65 62 75 67 2e 50 72 69 6e 74 20 28 56 42 41 2e 53 68 65 6c 6c 28 63 35 59 42 57 45 36 59 50 20 2b 20 72 65 77 44 48 31 73 38 44 20 2b 20 4c 52 70 42 63 4b 6a 70 6f 20 2b 20 77 4a 39 77 6f 31 58 6c 78 29 29 } 		$a_01_2 = {58 6f 72 20 41 73 63 28 4d 69 64 28 70 57 74 4b 4c 56 4b 75 38 2c 20 4a 36 39 70 6d 75 41 76 39 2c 20 31 29 } 	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 ]]

a5f87e20-d108-4478-b48b-63e411d2e787

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