Trojan_Win32_Ursnif_YOH_MTB

YARA detection rule by roadwy

Trojan:Win32/Ursnif.YOH!MTB,SIGNATURE_TYPE_PEHSTR_EXT,02 00 02 00 02 00 00

rule Trojan_Win32_Ursnif_YOH_MTB{
	meta:
		description = "Trojan:Win32/Ursnif.YOH!MTB,SIGNATURE_TYPE_PEHSTR_EXT,02 00 02 00 02 00 00 "
		
	strings :
		$a_03_0 = {81 c2 48 a6 00 00 52 8b 45 ?? 05 58 a6 00 00 50 6a 00 6a 00 8b 4d ?? 0f b7 91 ?? ?? ?? ?? 81 f2 e4 07 00 00 52 6a 00 6a 00 6a 00 8b 45 } 		$a_03_1 = {33 d2 f7 f1 8b 45 d8 0f be 8c 10 ?? ?? ?? ?? 8b 55 d8 8b 82 ?? ?? ?? ?? 03 c1 8b 4d d8 8b 91 ?? ?? ?? ?? 8b 4d d8 0f b6 94 11 ?? ?? ?? ?? 03 c2 33 d2 b9 00 01 00 00 f7 f1 8b 45 d8 89 } 	condition:
		((#a_03_0  & 1)*1+(#a_03_1  & 1)*1) >=2
 
}

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

10afff16-d4ee-4eea-9182-6e41a7d18e25

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