Ransom_Win64_FileCryptor_X_MTB

YARA detection rule by roadwy

Ransom:Win64/FileCryptor.X!MTB,SIGNATURE_TYPE_PEHSTR_EXT,04 00 04 00 05 00 00

rule Ransom_Win64_FileCryptor_X_MTB{
	meta:
		description = "Ransom:Win64/FileCryptor.X!MTB,SIGNATURE_TYPE_PEHSTR_EXT,04 00 04 00 05 00 00 "
		
	strings :
		$a_81_0 = {5c 43 75 72 72 65 6e 74 56 65 72 73 69 6f 6e 5c 50 6f 6c 69 63 69 65 73 5c 45 78 70 6c 6f 72 65 72 20 20 20 2f 76 20 4e 6f 52 75 6e } 		$a_81_1 = {5c 43 75 72 72 65 6e 74 56 65 72 73 69 6f 6e 5c 50 6f 6c 69 63 69 65 73 5c 53 79 73 74 65 6d 20 20 20 2f 76 20 44 69 73 61 62 6c 65 54 61 73 6b 4d 67 72 } 		$a_81_2 = {52 61 6e 73 6f 6d 77 61 72 65 5c 46 6f 6e 69 78 } 		$a_81_3 = {45 6e 64 20 2d 20 47 6f 6f 64 4c 75 63 6b } 		$a_81_4 = {45 6e 63 72 79 70 74 69 6f 6e 20 43 6f 6d 70 6c 65 74 65 64 } 	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) >=4
 
}

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

67107557-775a-478a-b19d-5489c0cb5b7a

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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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