Ransom_MSIL_Filecoder_EK_MTB

YARA detection rule by roadwy

Ransom:MSIL/Filecoder.EK!MTB,SIGNATURE_TYPE_PEHSTR_EXT,06 00 06 00 06 00 00

rule Ransom_MSIL_Filecoder_EK_MTB{
	meta:
		description = "Ransom:MSIL/Filecoder.EK!MTB,SIGNATURE_TYPE_PEHSTR_EXT,06 00 06 00 06 00 00 "
		
	strings :
		$a_81_0 = {51 57 78 73 49 48 6c 76 64 58 49 67 5a 6d 6c 73 5a 58 4d 67 64 32 56 79 5a 53 42 6c 62 6d 4e 79 65 58 42 30 5a 57 51 } 		$a_81_1 = {64 69 72 65 63 74 6f 72 79 57 61 6c 6b 65 72 } 		$a_81_2 = {67 65 74 5f 46 69 6c 65 50 61 72 73 65 72 } 		$a_81_3 = {67 65 74 5f 45 6e 63 72 79 70 74 69 6f 6e 4b 65 79 } 		$a_81_4 = {43 72 65 61 74 65 45 6e 63 72 79 70 74 69 6f 6e 4b 65 79 } 		$a_81_5 = {57 72 69 74 65 4d 65 73 73 61 67 65 54 6f 44 6f 63 75 6d 65 6e 74 73 } 	condition:
		((#a_81_0  & 1)*1+(#a_81_1  & 1)*1+(#a_81_2  & 1)*1+(#a_81_3  & 1)*1+(#a_81_4  & 1)*1+(#a_81_5  & 1)*1) >=6
 
}

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

91923466-dcf5-4a4c-9b41-94282e15e577

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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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