Trojan_Win64_CobaltStrike_MEK_MTB

YARA detection rule by roadwy

Trojan:Win64/CobaltStrike.MEK!MTB,SIGNATURE_TYPE_PEHSTR_EXT,08 00 08 00 09 00 00

rule Trojan_Win64_CobaltStrike_MEK_MTB{
	meta:
		description = "Trojan:Win64/CobaltStrike.MEK!MTB,SIGNATURE_TYPE_PEHSTR_EXT,08 00 08 00 09 00 00 "
		
	strings :
		$a_81_0 = {74 70 73 3a 2f 2f 31 32 32 2e 32 32 38 2e 37 2e 32 32 35 2f 61 64 6d 69 6e 3f 66 69 6c 65 3d } 		$a_81_1 = {43 61 63 68 65 20 53 65 73 73 69 6f 6e } 		$a_81_2 = {4e 65 74 77 6f 72 6b 4c 69 73 74 4d 61 6e 61 67 65 72 } 		$a_81_3 = {4b 65 72 62 65 72 6f 73 } 		$a_81_4 = {31 32 32 2e 31 39 33 2e 31 33 30 2e 37 34 } 		$a_81_5 = {6e 65 74 70 72 6f 66 6d 2c 6e 65 74 6d 61 6e } 		$a_81_6 = {65 70 6d 61 70 70 65 72 } 		$a_81_7 = {53 65 63 75 72 69 74 79 3d 49 6d 70 65 72 73 6f 6e 61 74 69 6f 6e 20 44 79 6e 61 6d 69 63 20 46 61 6c 73 65 } 		$a_81_8 = {31 32 31 2e 32 30 37 2e 32 32 39 2e 31 34 35 } 	condition:
		((#a_81_0  & 1)*1+(#a_81_1  & 1)*1+(#a_81_2  & 1)*1+(#a_81_3  & 1)*1+(#a_81_4  & 1)*1+(#a_81_5  & 1)*1+(#a_81_6  & 1)*1+(#a_81_7  & 1)*1+(#a_81_8  & 1)*1) >=8
 
}

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

9dc828ca-f2d9-4753-b6b2-0e2645316ba9

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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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