Ransom_MSIL_FileCoder_MVF_MTB

YARA detection rule by roadwy

Ransom:MSIL/FileCoder.MVF!MTB,SIGNATURE_TYPE_PEHSTR_EXT,04 00 04 00 04 00 00

rule Ransom_MSIL_FileCoder_MVF_MTB{
	meta:
		description = "Ransom:MSIL/FileCoder.MVF!MTB,SIGNATURE_TYPE_PEHSTR_EXT,04 00 04 00 04 00 00 "
		
	strings :
		$a_00_0 = {45 6e 63 72 79 70 74 65 72 } 		$a_80_1 = {53 65 6e 64 20 45 6d 61 69 6c 20 54 6f 20 62 6f 74 68 20 41 64 64 72 65 73 73 } 		$a_80_2 = {74 6f 20 6b 69 6c 6c 20 74 68 65 20 72 61 6e 73 6f 6d 77 61 72 65 } 		$a_80_3 = {42 45 46 4f 52 45 20 44 45 43 52 59 50 54 49 4e 47 20 54 45 53 54 20 46 49 4c 45 } 	condition:
		((#a_00_0  & 1)*1+(#a_80_1  & 1)*1+(#a_80_2  & 1)*1+(#a_80_3  & 1)*1) >=4
 
}

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

b0078bc8-16c7-40f2-8683-cdcd030e04a2

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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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