Ransom_MSIL_Syown

YARA detection rule by roadwy

Ransom:MSIL/Syown,SIGNATURE_TYPE_PEHSTR_EXT,12 00 12 00 0b 00 00

rule Ransom_MSIL_Syown{
	meta:
		description = "Ransom:MSIL/Syown,SIGNATURE_TYPE_PEHSTR_EXT,12 00 12 00 0b 00 00 "
		
	strings :
		$a_01_0 = {53 59 53 44 4f 57 4e 2e 65 78 65 } 		$a_01_1 = {53 59 53 44 4f 57 4e 2e 70 64 62 } 		$a_01_2 = {53 59 53 44 4f 57 4e 2e 4d 79 2e 52 65 73 6f 75 72 63 65 73 } 		$a_01_3 = {53 59 53 44 4f 57 4e 2e 46 6f 72 6d 31 2e 72 65 73 6f 75 72 63 65 73 } 		$a_01_4 = {53 59 53 44 4f 57 4e 2e 52 65 73 6f 75 72 63 65 73 2e 72 65 73 6f 75 72 63 65 73 } 		$a_01_5 = {53 59 53 44 4f 57 4e 2e 67 2e 72 65 73 6f 75 72 63 65 73 } 		$a_01_6 = {35 64 31 39 32 39 39 61 2d 37 64 39 65 2d 34 33 64 65 2d 39 35 36 61 2d 37 30 39 39 37 38 37 35 63 66 61 61 } 		$a_01_7 = {33 32 36 39 35 34 33 33 2d 34 41 32 31 2d 34 42 36 37 2d 39 46 43 32 2d 43 35 33 34 30 35 35 30 38 36 35 45 } 		$a_01_8 = {45 39 37 39 39 30 31 38 2d 44 37 31 38 2d 34 37 41 43 2d 38 43 32 45 2d 44 45 42 39 33 46 32 37 39 46 31 35 } 		$a_01_9 = {44 44 35 37 38 33 42 43 46 31 45 39 30 30 32 42 43 30 30 41 44 35 42 38 33 41 39 35 45 44 36 45 34 45 42 42 34 41 44 35 } 		$a_01_10 = {53 00 59 00 53 00 44 00 4f 00 57 00 4e 00 2e 00 65 00 78 00 65 00 } 	condition:
		((#a_01_0  & 1)*2+(#a_01_1  & 1)*2+(#a_01_2  & 1)*2+(#a_01_3  & 1)*2+(#a_01_4  & 1)*2+(#a_01_5  & 1)*2+(#a_01_6  & 1)*2+(#a_01_7  & 1)*2+(#a_01_8  & 1)*2+(#a_01_9  & 1)*2+(#a_01_10  & 1)*2) >=18
 
}

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

cd23846c-35d2-4fc2-a6cc-58c9a65b72bd

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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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