Ransom_Win32_WannaCrypt_DB_MTB

YARA detection rule by roadwy

Ransom:Win32/WannaCrypt.DB!MTB,SIGNATURE_TYPE_PEHSTR_EXT,05 00 05 00 05 00 00

rule Ransom_Win32_WannaCrypt_DB_MTB{
	meta:
		description = "Ransom:Win32/WannaCrypt.DB!MTB,SIGNATURE_TYPE_PEHSTR_EXT,05 00 05 00 05 00 00 "
		
	strings :
		$a_81_0 = {57 41 4e 4e 41 43 52 59 } 		$a_81_1 = {2e 77 72 79 } 		$a_81_2 = {43 72 79 70 74 49 6d 70 6f 72 74 4b 65 79 } 		$a_81_3 = {43 72 79 70 74 44 65 73 74 72 6f 79 4b 65 79 } 		$a_81_4 = {43 72 79 70 74 44 65 63 72 79 70 74 } 	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) >=5
 
}

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

24b83959-e67a-4cb5-8016-ab73e3016cf4

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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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