Trojan_Win32_Formbook_MI_MTB

YARA detection rule by roadwy

Trojan:Win32/Formbook.MI!MTB,SIGNATURE_TYPE_PEHSTR_EXT,05 00 05 00 05 00 00

rule Trojan_Win32_Formbook_MI_MTB{
	meta:
		description = "Trojan:Win32/Formbook.MI!MTB,SIGNATURE_TYPE_PEHSTR_EXT,05 00 05 00 05 00 00 "
		
	strings :
		$a_03_0 = {68 74 74 70 3a 2f 2f 61 6c 6d 6f 6e 64 74 72 61 64 69 6e 67 6c 74 64 2e 63 6f 6d 2f [0-05] 2e 65 78 65 } 		$a_01_1 = {46 45 41 52 4d 45 } 		$a_01_2 = {4c 6f 56 45 4d 65 } 		$a_01_3 = {4c 6f 63 6b 52 65 73 6f 75 72 63 65 } 		$a_01_4 = {49 73 50 72 6f 63 65 73 73 6f 72 46 65 61 74 75 72 65 50 72 65 73 65 6e 74 } 	condition:
		((#a_03_0  & 1)*1+(#a_01_1  & 1)*1+(#a_01_2  & 1)*1+(#a_01_3  & 1)*1+(#a_01_4  & 1)*1) >=5
 
}

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

28e80c1d-caa7-4fe6-a7ed-53fb110da42a

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