Trojan_O97M_Obfuse_BX

YARA detection rule by roadwy

Trojan:O97M/Obfuse.BX,SIGNATURE_TYPE_MACROHSTR_EXT,04 00 04 00 04 00 00

rule Trojan_O97M_Obfuse_BX{
	meta:
		description = "Trojan:O97M/Obfuse.BX,SIGNATURE_TYPE_MACROHSTR_EXT,04 00 04 00 04 00 00 "
		
	strings :
		$a_03_0 = {53 68 61 70 65 73 28 22 90 12 10 00 22 29 } 		$a_03_1 = {54 65 78 74 46 72 61 6d 65 2e 54 65 78 74 52 61 6e 67 65 2e 54 65 78 74 20 2b [0-10] 2b } 		$a_03_2 = {2e 52 75 6e [0-15] 2c } 		$a_03_3 = {47 65 74 4f 62 6a 65 63 74 28 22 6e 65 77 3a 37 32 43 32 34 44 44 35 2d 44 37 30 41 2d 34 33 38 42 2d 38 41 34 32 2d 39 38 34 32 34 42 38 38 41 46 42 38 22 20 2b 20 [0-30] 29 } 	condition:
		((#a_03_0  & 1)*1+(#a_03_1  & 1)*1+(#a_03_2  & 1)*1+(#a_03_3  & 1)*1) >=4
 
}

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

611e6b47-b64d-47ea-8e9a-45d403818166

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