Trojan_Win32_Ursnif_AX_MTB

YARA detection rule by roadwy

Trojan:Win32/Ursnif.AX!MTB,SIGNATURE_TYPE_PEHSTR_EXT,05 00 05 00 03 00 00

rule Trojan_Win32_Ursnif_AX_MTB{
	meta:
		description = "Trojan:Win32/Ursnif.AX!MTB,SIGNATURE_TYPE_PEHSTR_EXT,05 00 05 00 03 00 00 "
		
	strings :
		$a_02_0 = {8b 2f 8d 41 ?? 0f b7 c8 b8 ?? ?? ?? ?? 69 f1 ?? ?? ?? ?? 03 f2 f7 e6 c1 ea } 		$a_02_1 = {8b c3 83 c6 ?? 2b c1 03 f0 6b c1 ?? 83 c6 ?? 81 c5 ?? ?? ?? ?? 89 2d ?? ?? ?? ?? 89 2f 03 c6 69 f0 ?? ?? ?? ?? b8 ?? ?? ?? ?? 03 f1 f7 e6 c1 ea } 		$a_02_2 = {8b c3 83 c6 ?? 2b c1 03 f0 2b 0d ?? ?? ?? ?? 83 c7 04 8b 15 ?? ?? ?? ?? 83 c1 fe 03 ce } 	condition:
		((#a_02_0  & 1)*2+(#a_02_1  & 1)*2+(#a_02_2  & 1)*1) >=5
 
}

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

f24c01cf-b9fd-450b-be34-f6c260a5bae6

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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 ]]

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