Ransom_Win32_Wannaren_A

YARA detection rule by roadwy

Ransom:Win32/Wannaren.A,SIGNATURE_TYPE_PEHSTR_EXT,04 00 04 00 04 00 00

rule Ransom_Win32_Wannaren_A{
	meta:
		description = "Ransom:Win32/Wannaren.A,SIGNATURE_TYPE_PEHSTR_EXT,04 00 04 00 04 00 00 "
		
	strings :
		$a_01_0 = {2e 57 61 6e 6e 61 52 65 6e } 		$a_01_1 = {43 72 79 70 74 47 65 74 4b 65 79 50 61 72 61 6d 00 44 65 6c 65 74 65 46 69 6c 65 41 00 50 61 74 68 46 69 6e 64 46 69 6c 65 } 		$a_03_2 = {41 ff ff ff 81 ?? 3f ff ff ff c1 ?? 0a 81 ?? ff 01 00 00 81 ?? ff 01 00 00 81 ?? ff 7f 00 00 } 		$a_03_3 = {75 50 80 7c ?? ?? 64 75 49 80 7c ?? ?? 6f 75 42 80 7c ?? ?? 62 75 3b 80 7c ?? ?? 65 75 } 	condition:
		((#a_01_0  & 1)*2+(#a_01_1  & 1)*1+(#a_03_2  & 1)*1+(#a_03_3  & 1)*1) >=4
 
}

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

a0c0e1fe-8628-4edf-8ac8-6ad3d2fd720c

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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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