Ransom_MSIL_Cryptolocker_RM_MTB

YARA detection rule by roadwy

Ransom:MSIL/Cryptolocker.RM!MTB,SIGNATURE_TYPE_PEHSTR_EXT,07 00 07 00 07 00 00

rule Ransom_MSIL_Cryptolocker_RM_MTB{
	meta:
		description = "Ransom:MSIL/Cryptolocker.RM!MTB,SIGNATURE_TYPE_PEHSTR_EXT,07 00 07 00 07 00 00 "
		
	strings :
		$a_81_0 = {55 6e 6c 6f 63 6b 59 6f 75 72 46 69 6c 65 73 2e 4c 6f 67 69 6e } 		$a_81_1 = {44 65 63 72 79 70 74 41 6c 6c 46 69 6c 65 } 		$a_81_2 = {70 61 73 73 77 6f 72 64 } 		$a_81_3 = {41 45 53 5f 4f 6e 6c 79 5f 44 65 63 72 79 70 74 5f 46 69 6c 65 } 		$a_81_4 = {67 65 74 5f 44 61 72 6b 47 72 61 79 } 		$a_81_5 = {24 38 63 30 31 32 36 34 35 2d 63 63 35 62 2d 34 64 66 66 2d 39 63 31 33 2d 38 31 32 64 37 34 61 62 63 39 62 33 } 		$a_81_6 = {55 6e 6c 6f 63 6b 59 6f 75 72 46 69 6c 65 73 2e 50 72 6f 70 65 72 74 69 65 73 2e 52 65 73 6f 75 72 63 65 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+(#a_81_6  & 1)*1) >=7
 
}

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

621fa10e-6e5a-4efc-92ec-5e7432a31da4

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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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