Ransom_MSIL_Filecoder_EV_MTB

YARA detection rule by roadwy

Ransom:MSIL/Filecoder.EV!MTB,SIGNATURE_TYPE_PEHSTR_EXT,0a 00 0a 00 07 00 00

rule Ransom_MSIL_Filecoder_EV_MTB{
	meta:
		description = "Ransom:MSIL/Filecoder.EV!MTB,SIGNATURE_TYPE_PEHSTR_EXT,0a 00 0a 00 07 00 00 "
		
	strings :
		$a_81_0 = {63 75 74 65 52 61 6e 73 6f 6d 77 61 72 65 } 		$a_81_1 = {52 61 7a 79 5f 35 2e 5f 30 2e 52 61 6e 73 6f 6d 77 61 72 65 } 		$a_81_2 = {73 65 6e 64 42 61 63 6b 2e 74 78 74 } 		$a_81_3 = {65 6e 63 72 79 70 74 41 6c 6c } 		$a_81_4 = {65 6e 63 72 79 70 74 46 69 6c 65 } 		$a_81_5 = {43 72 65 61 74 65 45 6e 63 72 79 70 74 6f 72 } 		$a_81_6 = {67 65 74 52 61 6e 64 6f 6d 46 69 6c 65 4e 61 6d 65 } 	condition:
		((#a_81_0  & 1)*6+(#a_81_1  & 1)*6+(#a_81_2  & 1)*1+(#a_81_3  & 1)*1+(#a_81_4  & 1)*1+(#a_81_5  & 1)*1+(#a_81_6  & 1)*1) >=10
 
}

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

55e52c4c-bc9b-429d-b999-81800ba5488f

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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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