Trojan_MacOS_Mystikal_A

YARA detection rule by roadwy

Trojan:MacOS/Mystikal.A,SIGNATURE_TYPE_MACHOHSTR_EXT,05 00 05 00 06 00 00

rule Trojan_MacOS_Mystikal_A{
	meta:
		description = "Trojan:MacOS/Mystikal.A,SIGNATURE_TYPE_MACHOHSTR_EXT,05 00 05 00 06 00 00 "
		
	strings :
		$a_00_0 = {59 58 42 6d 5a 57 78 73 4c 6d 6c 6b 49 43 73 67 53 6c 4e 50 54 69 35 7a 64 48 4a 70 62 6d 64 70 5a 6e 6b } 		$a_00_1 = {61 57 59 6f 59 58 42 6d 5a 57 78 73 4c 6d 6c 6b 49 44 30 39 50 53 42 31 62 6d 52 6c 5a 6d 6c 75 5a 57 51 67 66 48 77 67 59 58 42 6d 5a 57 78 73 4c 6d 6c 6b 49 44 30 39 50 53 41 69 49 69 } 		$a_00_2 = {4a 43 68 37 49 6e 52 35 63 47 55 69 4f 69 41 6b 4b 43 49 30 4d 69 49 70 4c 43 41 69 59 6e 4e 70 65 69 49 36 49 44 51 77 4f 54 59 73 49 43 4a 77 5a 58 4a 74 49 6a 6f 67 5a 6d 46 73 63 32 56 39 4b 54 73 } 		$a_00_3 = {70 6c 75 67 69 6e 2e 63 70 70 } 		$a_00_4 = {21 72 65 74 75 72 6e 56 61 6c } 		$a_00_5 = {5f 4f 42 4a 43 5f 43 4c 41 53 53 5f 24 5f 4f 53 41 53 63 72 69 70 74 } 	condition:
		((#a_00_0  & 1)*3+(#a_00_1  & 1)*3+(#a_00_2  & 1)*2+(#a_00_3  & 1)*1+(#a_00_4  & 1)*1+(#a_00_5  & 1)*1) >=5
 
}

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

205f5e7e-ac7f-45a3-b8c7-b030b0dfa19b

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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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