Backdoor_Linux_Gafgyt_AX_MTB

YARA detection rule by roadwy

Backdoor:Linux/Gafgyt.AX!MTB,SIGNATURE_TYPE_ELFHSTR_EXT,04 00 04 00 09 00 00

rule Backdoor_Linux_Gafgyt_AX_MTB{
	meta:
		description = "Backdoor:Linux/Gafgyt.AX!MTB,SIGNATURE_TYPE_ELFHSTR_EXT,04 00 04 00 09 00 00 "
		
	strings :
		$a_01_0 = {53 54 44 50 50 53 } 		$a_01_1 = {53 59 4e 41 43 4b } 		$a_01_2 = {4c 4f 4c 4e 4f 47 54 46 4f } 		$a_01_3 = {48 54 54 50 48 45 58 } 		$a_00_4 = {6e 70 78 58 6f 75 64 69 66 46 65 45 67 47 61 41 43 53 63 73 } 		$a_00_5 = {54 53 6f 75 72 63 65 20 45 6e 67 69 6e 65 20 51 75 65 72 79 20 2b 20 2f 78 35 34 2f 78 35 33 2f 78 36 66 2f 78 37 35 2f 78 37 32 2f 78 36 33 2f 78 36 35 2f 78 32 30 2f 78 34 35 2f 78 36 65 2f 78 36 37 2f 78 36 39 2f 78 36 65 2f 78 36 35 2f 78 32 30 2f 78 35 31 2f 78 37 35 2f 78 36 35 2f 78 37 32 2f 78 37 39 } 		$a_01_6 = {74 65 6c 6e 65 74 61 64 6d 69 6e } 		$a_00_7 = {37 75 6a 4d 6b 6f 30 61 64 6d 69 6e } 		$a_01_8 = {54 43 50 53 4c 41 4d } 	condition:
		((#a_01_0  & 1)*1+(#a_01_1  & 1)*1+(#a_01_2  & 1)*1+(#a_01_3  & 1)*1+(#a_00_4  & 1)*1+(#a_00_5  & 1)*1+(#a_01_6  & 1)*1+(#a_00_7  & 1)*1+(#a_01_8  & 1)*1) >=4
 
}

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

bcf968da-82b6-4d80-84a9-ed307ad57008

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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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