Backdoor_Win32_Fynloski_A

YARA detection rule by roadwy

Backdoor:Win32/Fynloski.A,SIGNATURE_TYPE_PEHSTR_EXT,05 00 05 00 06 00 00

rule Backdoor_Win32_Fynloski_A{
	meta:
		description = "Backdoor:Win32/Fynloski.A,SIGNATURE_TYPE_PEHSTR_EXT,05 00 05 00 06 00 00 "
		
	strings :
		$a_01_0 = {44 43 50 45 52 53 46 57 42 50 } 		$a_03_1 = {49 5f 41 4d 5f 44 54 90 12 09 00 [0-19] 4b 6c 6f 67 2e 64 61 74 } 		$a_03_2 = {68 24 59 47 00 68 34 59 47 00 e8 ?? ?? ?? ?? 50 e8 } 		$a_03_3 = {68 fc 52 47 00 68 0c 53 47 00 e8 ?? ?? ?? ?? 50 e8 } 		$a_01_4 = {5a 59 59 64 89 10 68 30 58 47 00 } 		$a_01_5 = {5a 59 59 64 89 10 68 4d 52 47 00 } 	condition:
		((#a_01_0  & 1)*3+(#a_03_1  & 1)*3+(#a_03_2  & 1)*1+(#a_03_3  & 1)*1+(#a_01_4  & 1)*1+(#a_01_5  & 1)*1) >=5
 
}

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

dce194a4-0b30-4ea0-9ea8-a2d26bff77c2

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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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