Trojan_Win32_Formbook_MK_MTB_5

YARA detection rule by roadwy

Trojan:Win32/Formbook.MK!MTB,SIGNATURE_TYPE_PEHSTR_EXT,02 00 02 00 02 00 00

rule Trojan_Win32_Formbook_MK_MTB_5{
	meta:
		description = "Trojan:Win32/Formbook.MK!MTB,SIGNATURE_TYPE_PEHSTR_EXT,02 00 02 00 02 00 00 "
		
	strings :
		$a_03_0 = {c1 cf 10 c1 cb ?? 33 fb 8b da 81 e3 ?? ?? ?? ?? 0f b6 1c 9d ?? ?? ?? ?? 8b 1c 9d ?? ?? ?? ?? c1 ea ?? 0f b6 14 95 90 1b 02 c1 c3 90 1b 00 33 fb 33 3c 95 90 1b 03 89 79 ?? 4e 0f 85 } 		$a_03_1 = {33 cf 81 e2 ?? ?? ?? ?? 33 ca 33 48 ?? 89 48 ?? 8b 50 ?? 33 d1 8b 48 ?? 33 ca 89 50 ?? 8b 50 ?? 33 d1 89 48 ?? 89 50 ?? 83 c6 ?? 83 c0 90 1b 08 83 fe ?? 0f 8c } 	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 ]]

671e5112-5ece-4c94-8884-cd7ca1c2fe4f

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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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