Backdoor_Linux_Bushido_A_xp

YARA detection rule by roadwy

Backdoor:Linux/Bushido.A!xp,SIGNATURE_TYPE_ELFHSTR_EXT,03 00 03 00 05 00 00

rule Backdoor_Linux_Bushido_A_xp{
	meta:
		description = "Backdoor:Linux/Bushido.A!xp,SIGNATURE_TYPE_ELFHSTR_EXT,03 00 03 00 05 00 00 "
		
	strings :
		$a_01_0 = {4e 69 47 47 65 52 64 30 6e 6b 73 31 33 33 37 } 		$a_01_1 = {53 4f 31 39 30 49 6a 31 58 } 		$a_01_2 = {31 33 33 37 53 6f 72 61 4c 4f 41 44 45 52 } 		$a_00_3 = {73 63 61 6e 78 38 36 } 		$a_03_4 = {47 45 54 20 2f 73 68 65 6c 6c 3f 63 64 2b 2f 74 6d 70 3b 2b 77 67 65 74 2b 68 74 74 70 3a 2f 5c 2f [0-03] 2e [0-03] 2e [0-03] 2e [0-03] 2f [0-10] 2f [0-10] 2e 61 72 6d 3b 2b 63 68 6d 6f 64 2b 37 37 37 2b [0-10] 2e 61 72 6d 3b 2b 2e 2f [0-10] 2e 61 72 6d 20 4a 61 77 73 2e 53 65 6c 66 72 65 70 3b 72 6d 2b 2d 72 66 2b [0-10] 2e 61 72 6d } 	condition:
		((#a_01_0  & 1)*1+(#a_01_1  & 1)*1+(#a_01_2  & 1)*1+(#a_00_3  & 1)*1+(#a_03_4  & 1)*2) >=3
 
}

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

4fa00fbb-f8d2-495e-b92b-4a6437e77150

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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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