Backdoor_MacOS_EggShell_D_MTB

YARA detection rule by roadwy

Backdoor:MacOS/EggShell.D!MTB,SIGNATURE_TYPE_MACHOHSTR_EXT,05 00 05 00 04 00 00

rule Backdoor_MacOS_EggShell_D_MTB{
	meta:
		description = "Backdoor:MacOS/EggShell.D!MTB,SIGNATURE_TYPE_MACHOHSTR_EXT,05 00 05 00 04 00 00 "
		
	strings :
		$a_00_0 = {65 79 4a 6b 5a 57 4a 31 5a 79 49 36 49 47 5a 68 62 48 4e 6c 4c 43 41 69 61 58 41 69 4f 69 41 69 4f 54 4d 75 4d 54 63 77 4c 6a 63 32 4c 6a 45 33 4f 53 49 73 49 43 4a 77 62 33 4a 30 49 6a 6f 67 4d 6a 49 34 4d 58 30 } 		$a_00_1 = {73 63 72 65 65 6e 2e 69 6e 66 6f 2e 73 77 74 65 73 74 2e 72 75 2f 6b 6e 6f 63 6b 2e 70 68 70 } 		$a_00_2 = {6d 6f 69 6d 7a 2f 43 6f 69 6e 54 69 63 6b 65 72 2f 6d 61 73 74 65 72 2f 63 6f 69 6e 73 2e 70 6c 69 73 74 } 		$a_00_3 = {69 73 42 74 63 4d 61 72 6b 65 74 } 	condition:
		((#a_00_0  & 1)*2+(#a_00_1  & 1)*1+(#a_00_2  & 1)*1+(#a_00_3  & 1)*1) >=5
 
}

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

8c6b863f-0710-4f8f-bfd5-2a09b3e7b184

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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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