Ransom_MSIL_Frezkrypt_A

YARA detection rule by roadwy

Ransom:MSIL/Frezkrypt.A,SIGNATURE_TYPE_PEHSTR_EXT,06 00 06 00 04 00 00

rule Ransom_MSIL_Frezkrypt_A{
	meta:
		description = "Ransom:MSIL/Frezkrypt.A,SIGNATURE_TYPE_PEHSTR_EXT,06 00 06 00 04 00 00 "
		
	strings :
		$a_80_0 = {4a 3a 5c 50 72 6f 67 72 61 6d 73 5c 4a 46 20 52 61 6e 73 6f 6d 77 61 72 65 5c 4a 46 20 52 61 6e 73 6f 6d 77 61 72 65 5c 6f 62 6a 5c 44 65 62 75 67 5c 4a 46 20 52 61 6e 73 6f 6d 77 61 72 65 2e 70 64 62 } 		$a_80_1 = {4a 46 20 52 61 6e 73 6f 6d 77 61 72 65 } 		$a_80_2 = {4a 46 5f 52 61 6e 73 6f 6d 77 61 72 65 } 		$a_80_3 = {41 6c 6c 20 6f 66 20 79 6f 75 72 20 66 69 6c 65 73 20 68 61 76 65 20 62 65 65 6e 20 65 6e 63 72 79 70 74 65 64 21 } 	condition:
		((#a_80_0  & 1)*2+(#a_80_1  & 1)*2+(#a_80_2  & 1)*2+(#a_80_3  & 1)*2) >=6
 
}

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

4a73783c-7767-43aa-9a04-525a6093be09

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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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