Trojan_Win32_Ursnif_RE_MTB

YARA detection rule by roadwy

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

rule Trojan_Win32_Ursnif_RE_MTB{
	meta:
		description = "Trojan:Win32/Ursnif.RE!MTB,SIGNATURE_TYPE_PEHSTR_EXT,02 00 02 00 02 00 00 "
		
	strings :
		$a_02_0 = {83 c1 05 2b 0d ?? ?? ?? ?? 89 0d ?? ?? ?? ?? 68 ?? ?? ?? ?? 8b ?? ?? ?? ?? ?? 52 e8 ?? ?? ?? ?? 83 ?? ?? 03 ?? ?? ?? ?? ?? a3 ?? ?? ?? ?? 0f ?? ?? ?? ?? ?? ?? 89 ?? ?? 83 } 		$a_02_1 = {83 e9 2c 0f ?? ?? ?? ?? ?? ?? 2b ?? a1 ?? ?? ?? ?? 2b ?? a3 ?? ?? ?? ?? 8b ?? ?? ?? ?? ?? 83 ?? ?? 2b ?? ?? ?? ?? ?? 89 ?? ?? ?? ?? ?? 0f ?? ?? ?? ?? ?? ?? 0f ?? ?? ?? ?? ?? ?? 2b ?? 81 } 	condition:
		((#a_02_0  & 1)*1+(#a_02_1  & 1)*1) >=2
 
}

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

12cd7268-9076-4150-8b8c-f82ab807c3dc

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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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