Ransom_Win32_Filecoder_F_MTB

YARA detection rule by roadwy

Ransom:Win32/Filecoder.F!MTB,SIGNATURE_TYPE_PEHSTR,03 00 03 00 04 00 00

rule Ransom_Win32_Filecoder_F_MTB{
	meta:
		description = "Ransom:Win32/Filecoder.F!MTB,SIGNATURE_TYPE_PEHSTR,03 00 03 00 04 00 00 "
		
	strings :
		$a_01_0 = {74 65 73 74 52 61 6e 73 6f 6d 65 2e 70 64 62 } 		$a_01_1 = {44 61 74 61 2e 74 78 74 } 		$a_01_2 = {52 61 6e 73 6f 6d 65 77 61 72 65 49 6e 66 6f 42 61 63 6b 75 70 } 		$a_01_3 = {2e 74 78 74 2e 64 6f 63 2e 64 6f 63 78 2e 78 6c 73 2e 78 6c 73 78 2e 70 70 74 2e 70 70 74 78 2e 70 73 74 2e 6f 73 74 2e 6d 73 67 2e 65 6d 2e 76 73 64 2e 76 73 64 78 2e 63 73 76 2e 72 74 66 2e 31 32 33 2e 77 6b 73 2e 77 6b 31 2e 70 64 66 2e 64 77 67 2e 6f 6e 65 74 6f 63 32 2e 73 6e 74 2e 64 6f 63 62 2e 64 6f 63 6d 2e 64 6f 74 2e 64 6f 74 6d 2e 64 6f 74 78 2e 78 6c 73 6d 2e 78 6c 73 62 2e 78 6c 77 2e 78 6c 74 2e 78 6c 6d 2e } 	condition:
		((#a_01_0  & 1)*1+(#a_01_1  & 1)*1+(#a_01_2  & 1)*1+(#a_01_3  & 1)*1) >=3
 
}

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

8f8810dd-b5f4-4675-9462-1e1d5db67ad4

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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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