TrojanDownloader_O97M_Obfuse_BK_MTB_29

YARA detection rule by roadwy

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

rule TrojanDownloader_O97M_Obfuse_BK_MTB_29{
	meta:
		description = "TrojanDownloader:O97M/Obfuse.BK!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,05 00 05 00 05 00 00 "
		
	strings :
		$a_01_0 = {3d 20 41 63 74 69 76 65 43 65 6c 6c 2e 4f 66 66 73 65 74 28 69 43 2c 20 31 29 2e 56 61 6c 75 65 } 		$a_01_1 = {3d 20 55 73 65 72 46 6f 72 6d 32 2e 46 72 61 6d 65 32 2e 54 61 67 } 		$a_01_2 = {53 68 65 6c 6c 4f 62 6a 2e 53 68 65 6c 6c 45 78 65 63 75 74 65 20 78 2c 20 79 79 79 } 		$a_01_3 = {50 72 69 76 61 74 65 20 53 75 62 20 55 73 65 72 46 6f 72 6d 5f 43 6c 69 63 6b 28 29 } 		$a_01_4 = {53 6c 65 65 70 20 32 30 30 30 } 	condition:
		((#a_01_0  & 1)*1+(#a_01_1  & 1)*1+(#a_01_2  & 1)*1+(#a_01_3  & 1)*1+(#a_01_4  & 1)*1) >=5
 
}

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

0f94382c-ffa7-45c5-9c0c-746835f9b42c

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