Backdoor_Linux_Flashback_F

YARA detection rule by roadwy

Backdoor:Linux/Flashback.F,SIGNATURE_TYPE_MACHOHSTR_EXT,10 00 0f 00 07 00 00

rule Backdoor_Linux_Flashback_F{
	meta:
		description = "Backdoor:Linux/Flashback.F,SIGNATURE_TYPE_MACHOHSTR_EXT,10 00 0f 00 07 00 00 "
		
	strings :
		$a_01_0 = {25 73 2e 25 73 2e 73 6f } 		$a_01_1 = {25 73 7c 25 73 7c 25 73 7c 25 73 7c 25 73 7c 25 73 7c 25 64 } 		$a_01_2 = {25 73 20 22 25 73 25 73 25 73 22 20 25 73 20 22 25 73 } 		$a_01_3 = {49 4f 50 6c 61 74 66 6f 72 6d 55 55 49 44 } 		$a_01_4 = {73 79 73 63 74 6c 2e 70 72 6f 63 5f 63 70 75 74 79 70 65 } 		$a_01_5 = {64 46 64 31 6a 73 } 		$a_03_6 = {f7 d0 21 c2 81 ?? 80 80 80 80 74 ?? 89 ?? c1 e8 10 f7 c2 80 80 00 00 0f 44 } 	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+(#a_01_5  & 1)*6+(#a_03_6  & 1)*6) >=15
 
}

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

4dd877d4-0003-4350-8d6e-61bddb64cbce

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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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