Ransom_Win64_Ragnarok_BR_MTB

YARA detection rule by roadwy

Ransom:Win64/Ragnarok.BR!MTB,SIGNATURE_TYPE_PEHSTR_EXT,05 00 05 00 05 00 00

rule Ransom_Win64_Ragnarok_BR_MTB{
	meta:
		description = "Ransom:Win64/Ragnarok.BR!MTB,SIGNATURE_TYPE_PEHSTR_EXT,05 00 05 00 05 00 00 "
		
	strings :
		$a_01_0 = {41 4c 4c 20 59 4f 55 52 20 46 49 4c 45 53 20 41 52 45 20 45 4e 43 52 59 50 54 45 44 } 		$a_01_1 = {41 4e 59 20 4d 4f 44 49 46 49 43 41 54 49 4f 4e 2f 52 45 53 54 4f 52 41 54 49 4f 4e 20 41 54 54 45 4d 50 54 53 20 57 49 4c 4c 20 42 52 45 41 4b 20 59 4f 55 52 20 46 49 4c 45 53 20 41 4e 44 20 59 4f 55 20 57 49 4c 4c 20 4e 4f 54 20 42 45 20 41 42 4c 45 20 54 4f 20 52 45 43 4f 56 45 52 20 54 48 45 4d 20 45 56 45 52 20 41 47 41 49 4e } 		$a_01_2 = {44 4f 20 4e 4f 54 20 54 4f 55 43 48 20 41 4e 59 54 48 49 4e 47 } 		$a_01_3 = {54 4f 20 44 45 43 52 59 50 54 2f 52 45 53 54 4f 52 45 20 59 4f 55 52 20 46 49 4c 45 53 20 2d 3e 20 57 52 49 54 45 20 41 4e 20 45 4d 41 49 4c 20 54 4f 20 54 48 49 53 20 41 44 44 52 45 53 53 20 46 4f 52 20 46 55 52 54 48 45 52 20 49 4e 53 54 52 55 43 54 49 4f 4e 53 } 		$a_01_4 = {63 72 75 73 74 6f 6d 2d 73 75 70 70 6f 72 74 40 70 72 6f 74 6f 6e 2e 6d 65 } 	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) >=5
 
}

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

bffb60ad-bbe7-4c55-88c8-bbc0f8c8a783

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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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