TrojanDownloader_O97M_Obfuse_GJ_MTB

YARA detection rule by roadwy

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

rule TrojanDownloader_O97M_Obfuse_GJ_MTB{
	meta:
		description = "TrojanDownloader:O97M/Obfuse.GJ!MTB,SIGNATURE_TYPE_MACROHSTR_EXT,04 00 04 00 04 00 00 "
		
	strings :
		$a_00_0 = {2e 52 75 6e 20 52 55 4e 43 4d 44 } 		$a_00_1 = {34 33 20 33 61 20 35 63 20 35 35 20 37 33 20 36 35 20 37 32 20 37 33 20 35 63 20 35 30 20 37 35 20 36 32 20 36 63 20 36 39 20 36 33 20 35 63 20 37 33 20 37 36 20 36 33 20 36 38 20 36 66 20 37 33 20 37 34 20 33 33 20 33 32 20 32 65 20 36 35 20 37 38 20 36 35 } 		$a_00_2 = {35 37 20 35 33 20 36 33 20 37 32 20 36 39 20 37 30 20 37 34 20 32 65 20 35 33 20 36 38 20 36 35 20 36 63 20 36 63 } 		$a_00_3 = {36 38 20 37 34 20 37 34 20 37 30 20 33 41 20 32 46 20 32 46 20 37 34 20 36 38 20 36 46 20 36 34 20 36 39 20 36 31 20 36 33 20 36 31 20 36 44 20 37 32 20 36 31 20 36 45 20 36 38 20 32 45 20 36 33 20 36 46 20 36 44 20 32 46 20 36 42 20 36 31 20 37 33 20 36 38 20 32 45 20 36 35 20 37 38 20 36 35 } 	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 ]]

d4590080-d053-469b-960d-e9ac6892865d

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