Ransom_Win32_WannaCrypt_A_rsm

YARA detection rule by roadwy

Ransom:Win32/WannaCrypt.A!rsm,SIGNATURE_TYPE_PEHSTR_EXT,04 00 04 00 06 00 00

rule Ransom_Win32_WannaCrypt_A_rsm{
	meta:
		description = "Ransom:Win32/WannaCrypt.A!rsm,SIGNATURE_TYPE_PEHSTR_EXT,04 00 04 00 06 00 00 "
		
	strings :
		$a_01_0 = {66 2e 77 6e 72 79 } 		$a_01_1 = {25 2e 31 66 20 42 54 43 } 		$a_01_2 = {40 57 61 6e 61 44 65 63 72 79 70 74 6f 72 40 2e 65 78 65 } 		$a_01_3 = {25 30 38 58 2e 65 6b 79 } 		$a_01_4 = {25 30 38 58 2e 70 6b 79 } 		$a_01_5 = {25 30 38 58 2e 72 65 73 } 	condition:
		((#a_01_0  & 1)*1+(#a_01_1  & 1)*1+(#a_01_2  & 1)*1+(#a_01_3  & 1)*1+(#a_01_4  & 1)*1+(#a_01_5  & 1)*1) >=4
 
}

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

269cc0a7-4d2f-49be-a9f8-1a326bbe42d8

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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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