Trojan_Win32_Cobaltstrike_MKRT_MTB

YARA detection rule by roadwy

Trojan:Win32/Cobaltstrike.MKRT!MTB,SIGNATURE_TYPE_PEHSTR_EXT,03 00 03 00 03 00 00

rule Trojan_Win32_Cobaltstrike_MKRT_MTB{
	meta:
		description = "Trojan:Win32/Cobaltstrike.MKRT!MTB,SIGNATURE_TYPE_PEHSTR_EXT,03 00 03 00 03 00 00 "
		
	strings :
		$a_00_0 = {89 c8 c1 e8 12 24 07 0c f0 88 02 89 c8 c1 e8 0c 24 3f 0c 80 88 42 01 89 c8 c1 e8 06 24 3f 0c 80 88 42 02 80 e1 3f 80 c9 80 88 4a 03 b9 04 00 00 00 48 81 c4 98 } 		$a_00_1 = {4c 6f 63 61 6c 5c 52 75 73 74 42 61 63 6b 74 72 61 63 65 4d 75 74 65 78 } 		$a_81_2 = {72 75 73 74 5f 65 68 5f 70 65 72 73 6f 6e 61 6c 69 74 79 } 	condition:
		((#a_00_0  & 1)*1+(#a_00_1  & 1)*1+(#a_81_2  & 1)*1) >=3
 
}

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

a3b44485-fc8a-40fe-96fc-45be5937e075

Propose edits, view related rules, and engage with the community through comments.

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 ]]

Community Discussion