Trojan_Win32_Ursnif_RAV_MTB

YARA detection rule by roadwy

Trojan:Win32/Ursnif.RAV!MTB,SIGNATURE_TYPE_PEHSTR_EXT,01 00 01 00 04 00 00

rule Trojan_Win32_Ursnif_RAV_MTB{
	meta:
		description = "Trojan:Win32/Ursnif.RAV!MTB,SIGNATURE_TYPE_PEHSTR_EXT,01 00 01 00 04 00 00 "
		
	strings :
		$a_02_0 = {0f b7 c7 8d 53 03 83 c1 04 03 d0 ff 4c 24 1c 89 4c 24 14 74 ?? a1 ?? ?? ?? ?? 8b 7c 24 20 e9 } 		$a_02_1 = {81 c7 38 51 9b 01 8d 34 42 03 c6 89 3b 8b 35 ?? ?? ?? ?? 3b f2 89 3d ?? ?? ?? ?? 73 } 		$a_02_2 = {8b 74 24 14 81 c7 70 b6 37 01 89 3e 83 c6 04 83 6c 24 ?? ?? b1 ?? 89 74 24 ?? 0f 85 } 		$a_02_3 = {8b 6c 24 14 8b d1 2b 15 ?? ?? ?? ?? 83 c5 04 83 ea 03 83 6c 24 18 01 0f b7 d2 89 6c 24 14 0f 85 } 	condition:
		((#a_02_0  & 1)*1+(#a_02_1  & 1)*1+(#a_02_2  & 1)*1+(#a_02_3  & 1)*1) >=1
 
}

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

aa3d4afe-ba36-48df-bc22-943807ffca4f

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