Ransom_MSIL_WannaCry_AMTB

YARA detection rule by roadwy

Ransom:MSIL/WannaCry!AMTB,SIGNATURE_TYPE_PEHSTR_EXT,04 00 04 00 04 00 00

rule Ransom_MSIL_WannaCry_AMTB{
	meta:
		description = "Ransom:MSIL/WannaCry!AMTB,SIGNATURE_TYPE_PEHSTR_EXT,04 00 04 00 04 00 00 "
		
	strings :
		$a_80_0 = {43 3a 5c 55 73 65 72 73 5c 41 63 65 72 20 4e 69 74 72 6f 20 35 30 5c 44 65 73 6b 74 6f 70 5c 43 23 5c 57 61 6e 6e 61 43 72 79 5c 6f 62 6a 5c 52 65 6c 65 61 73 65 5c 50 61 79 44 61 79 2e 70 64 62 } 		$a_80_1 = {49 6d 61 67 65 2e 57 4e 43 52 59 } 		$a_80_2 = {57 6f 72 6b 66 6c 6f 77 2e 57 4e 43 52 59 } 		$a_80_3 = {50 61 79 44 61 79 2e 50 72 6f 70 65 72 74 69 65 73 2e 52 65 73 6f 75 72 63 65 73 } 	condition:
		((#a_80_0  & 1)*1+(#a_80_1  & 1)*1+(#a_80_2  & 1)*1+(#a_80_3  & 1)*1) >=4
 
}

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

0e35e9f9-eaba-4b0b-aa60-c3b51dda5a68

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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 ]]

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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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