Ransom_Win32_WannaCrypt_B_

YARA detection rule by roadwy

Ransom:Win32/WannaCrypt.B!!WannaCrypt.gen!B,SIGNATURE_TYPE_ARHSTR_EXT,03 00 03 00 04 00 00

rule Ransom_Win32_WannaCrypt_B_{
	meta:
		description = "Ransom:Win32/WannaCrypt.B!!WannaCrypt.gen!B,SIGNATURE_TYPE_ARHSTR_EXT,03 00 03 00 04 00 00 "
		
	strings :
		$a_00_0 = {57 41 4e 4e 41 43 52 59 00 } 		$a_00_1 = {21 57 61 6e 6e 61 44 65 63 72 79 70 74 6f 72 21 2e 65 78 65 } 		$a_00_2 = {75 2e 77 72 79 00 00 00 25 2e 31 66 20 42 54 43 } 		$a_00_3 = {57 53 63 72 69 70 74 2e 43 72 65 61 74 65 4f 62 6a 65 63 74 28 22 57 53 63 72 69 70 74 2e 53 68 65 6c 6c 22 29 3e 20 63 2e 76 62 73 } 	condition:
		((#a_00_0  & 1)*2+(#a_00_1  & 1)*2+(#a_00_2  & 1)*1+(#a_00_3  & 1)*1) >=3
 
}

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

f13e2961-32a5-4ff4-b605-7f8491b890aa

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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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