Backdoor_Linux_Mayday_A_xp

YARA detection rule by roadwy

Backdoor:Linux/Mayday.A!xp,SIGNATURE_TYPE_ELFHSTR_EXT,02 00 02 00 02 00 00

rule Backdoor_Linux_Mayday_A_xp{
	meta:
		description = "Backdoor:Linux/Mayday.A!xp,SIGNATURE_TYPE_ELFHSTR_EXT,02 00 02 00 02 00 00 "
		
	strings :
		$a_00_0 = {83 ec 0c 68 60 9a 0c 08 e8 b9 15 00 00 83 c4 10 83 ec 0c 8d 45 90 50 e8 7d 00 00 00 83 c4 10 83 ec 0c 8d 45 90 50 } 		$a_00_1 = {83 ec 04 68 00 04 00 00 8d 85 f0 fb ff ff 50 ff 75 f4 e8 a7 1b 00 00 83 c4 10 89 45 f8 83 7d f8 00 7e 2c 8b 55 f8 8d 45 fc 01 10 8b 45 f8 83 ec 04 50 8d 85 f0 fb ff ff 50 ff 75 f0 e8 9a 51 00 00 83 c4 10 } 	condition:
		((#a_00_0  & 1)*1+(#a_00_1  & 1)*1) >=2
 
}

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

41eb0219-c560-4082-ba6a-d241582ef40f

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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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