Ransom_MSIL_Jcrypt_DC_MTB

YARA detection rule by roadwy

Ransom:MSIL/Jcrypt.DC!MTB,SIGNATURE_TYPE_PEHSTR_EXT,07 00 07 00 06 00 00

rule Ransom_MSIL_Jcrypt_DC_MTB{
	meta:
		description = "Ransom:MSIL/Jcrypt.DC!MTB,SIGNATURE_TYPE_PEHSTR_EXT,07 00 07 00 06 00 00 "
		
	strings :
		$a_81_0 = {52 45 43 4f 56 45 52 5f 5f 46 49 4c 45 53 } 		$a_81_1 = {45 6e 63 72 79 70 74 69 6e 67 } 		$a_81_2 = {4e 6f 20 66 69 6c 65 73 20 74 6f 20 65 6e 63 72 79 70 74 } 		$a_81_3 = {2e 6a 63 72 79 70 74 } 		$a_81_4 = {2e 77 61 6e 6e 61 70 61 79 } 		$a_81_5 = {2e 64 61 64 64 79 63 72 79 70 74 } 	condition:
		((#a_81_0  & 1)*2+(#a_81_1  & 1)*2+(#a_81_2  & 1)*2+(#a_81_3  & 1)*1+(#a_81_4  & 1)*1+(#a_81_5  & 1)*1) >=7
 
}

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

43c0595e-646d-4e75-b5d5-cb9488f46fd9

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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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