Trojan_Win32_Bsymem_AO_MTB

YARA detection rule by roadwy

Trojan:Win32/Bsymem.AO!MTB,SIGNATURE_TYPE_PEHSTR_EXT,0a 00 0a 00 01 00 00

rule Trojan_Win32_Bsymem_AO_MTB{
	meta:
		description = "Trojan:Win32/Bsymem.AO!MTB,SIGNATURE_TYPE_PEHSTR_EXT,0a 00 0a 00 01 00 00 "
		
	strings :
		$a_03_0 = {8b 45 e8 8b 55 ec 01 02 8b 45 b8 03 45 e8 89 45 b4 8b 45 d8 03 45 b4 8b 55 ec 31 02 6a 00 e8 [0-04] 8b d8 8b 45 e8 83 c0 04 03 d8 6a 00 e8 [0-04] 2b d8 6a 00 e8 [0-04] 03 d8 6a 00 e8 [0-04] 2b d8 89 5d e8 8b 45 ec 83 c0 04 89 45 ec 8b 45 e8 3b 45 e4 72 } 	condition:
		((#a_03_0  & 1)*10) >=10
 
}

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

d946b4ac-1c42-4ae0-9dc3-596a92741b6b

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