Ransom_MSIL_OnyxLocker_DA_MTB

YARA detection rule by roadwy

Ransom:MSIL/OnyxLocker.DA!MTB,SIGNATURE_TYPE_PEHSTR_EXT,04 00 04 00 04 00 00

rule Ransom_MSIL_OnyxLocker_DA_MTB{
	meta:
		description = "Ransom:MSIL/OnyxLocker.DA!MTB,SIGNATURE_TYPE_PEHSTR_EXT,04 00 04 00 04 00 00 "
		
	strings :
		$a_81_0 = {4f 6e 79 78 4c 6f 63 6b 65 72 } 		$a_81_1 = {52 45 43 4f 56 45 52 59 20 49 4e 53 54 52 55 43 54 49 4f 4e 53 } 		$a_81_2 = {4f 6e 79 78 4c 6f 63 6b 65 72 2e 43 6c 61 73 73 65 73 } 		$a_81_3 = {57 57 39 31 49 48 4e 6f 62 33 56 73 5a 43 42 79 5a 58 42 73 59 57 4e 6c 49 48 52 6f 61 58 4d 67 62 57 56 7a 63 32 46 6e 5a 53 42 33 61 58 52 6f 49 48 52 6f 5a 53 42 76 62 6d 55 67 65 57 39 31 49 48 64 68 62 6e 51 67 65 57 39 31 63 69 42 31 63 32 56 79 63 79 42 30 62 79 42 7a 5a 57 55 75 } 	condition:
		((#a_81_0  & 1)*1+(#a_81_1  & 1)*1+(#a_81_2  & 1)*1+(#a_81_3  & 1)*1) >=4
 
}

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

697e5fed-a0a8-4d8e-8f76-0e969b0cb89c

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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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