Ransom_Win32_RyukPacker_MTB

YARA detection rule by roadwy

Ransom:Win32/RyukPacker!MTB,SIGNATURE_TYPE_PEHSTR_EXT,0b 00 0b 00 0b 00 00

rule Ransom_Win32_RyukPacker_MTB{
	meta:
		description = "Ransom:Win32/RyukPacker!MTB,SIGNATURE_TYPE_PEHSTR_EXT,0b 00 0b 00 0b 00 00 "
		
	strings :
		$a_01_0 = {46 75 63 6b 20 44 65 66 } 		$a_01_1 = {43 4c 53 49 44 5c 25 31 5c 49 6e 70 72 6f 63 48 61 6e 64 6c 65 72 33 32 } 		$a_01_2 = {43 4c 53 49 44 5c 25 31 5c 4c 6f 63 61 6c 53 65 72 76 65 72 33 32 } 		$a_01_3 = {25 32 5c 70 72 6f 74 6f 63 6f 6c 5c 53 74 64 46 69 6c 65 45 64 69 74 69 6e 67 5c 73 65 72 76 65 72 } 		$a_01_4 = {5b 6f 70 65 6e 28 22 25 31 22 29 5d } 		$a_01_5 = {64 64 65 65 78 65 63 } 		$a_01_6 = {4e 65 74 51 75 65 72 79 44 69 73 70 6c 61 79 49 6e 66 6f 72 6d 61 74 69 6f 6e } 		$a_01_7 = {43 72 79 70 74 45 6e 63 72 79 70 74 } 		$a_01_8 = {43 72 79 70 74 49 6d 70 6f 72 74 4b 65 79 } 		$a_01_9 = {43 72 79 70 74 41 63 71 75 69 72 65 43 6f 6e 74 65 78 74 57 } 		$a_01_10 = {47 00 65 00 74 00 55 00 73 00 65 00 72 00 4e 00 61 00 6d 00 65 00 73 00 } 	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+(#a_01_6  & 1)*1+(#a_01_7  & 1)*1+(#a_01_8  & 1)*1+(#a_01_9  & 1)*1+(#a_01_10  & 1)*1) >=11
 
}

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

8e360f3d-167b-42ce-9dd0-99fdecd767aa

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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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