TrojanDropper_O97M_Obfuse_RN_MTB

YARA detection rule by roadwy

TrojanDropper:O97M/Obfuse.RN!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,04 00 04 00 04 00 00

rule TrojanDropper_O97M_Obfuse_RN_MTB{
	meta:
		description = "TrojanDropper:O97M/Obfuse.RN!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,04 00 04 00 04 00 00 "
		
	strings :
		$a_01_0 = {3d 20 45 6e 76 69 72 6f 6e 28 22 41 4c 4c 55 53 45 52 53 50 52 4f 46 49 4c 45 22 29 20 26 20 22 5c 22 20 26 20 52 6e 64 20 26 20 22 2e 6a 73 22 } 		$a_01_1 = {2e 43 72 65 61 74 65 28 22 77 73 63 72 69 70 74 2e 65 78 65 20 22 20 26 20 70 2c 20 4e 75 6c 6c 2c 20 4e 75 6c 6c 2c 20 69 6e 74 50 72 6f 63 65 73 73 49 44 29 } 		$a_01_2 = {53 65 74 20 6f 62 6a 57 4d 49 53 65 72 76 69 63 65 20 3d 20 47 65 74 4f 62 6a 65 63 74 28 22 77 69 6e 6d 67 6d 74 73 3a 5c 5c 2e 5c 72 6f 6f 74 5c 63 69 6d 76 32 3a 57 69 6e 33 32 5f 50 72 6f 63 65 73 73 22 29 } 		$a_01_3 = {50 72 69 6e 74 20 23 31 2c } 	condition:
		((#a_01_0  & 1)*1+(#a_01_1  & 1)*1+(#a_01_2  & 1)*1+(#a_01_3  & 1)*1) >=4
 
}

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

f4652483-b2b4-4fcc-b716-fc3a7f901268

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