Backdoor_Win32_Kotu_2

YARA detection rule by roadwy

Backdoor:Win32/Kotu,SIGNATURE_TYPE_PEHSTR,ffffff9f 00 ffffff9f 00 0b 00 00

rule Backdoor_Win32_Kotu_2{
	meta:
		description = "Backdoor:Win32/Kotu,SIGNATURE_TYPE_PEHSTR,ffffff9f 00 ffffff9f 00 0b 00 00 "
		
	strings :
		$a_01_0 = {4b 4f 54 55 44 49 41 4c 45 52 5f 49 4e 53 54 41 4e 43 45 } 		$a_01_1 = {52 61 73 47 65 74 45 6e 74 72 79 44 69 61 6c 50 61 72 61 6d 73 41 } 		$a_01_2 = {52 61 73 53 65 74 45 6e 74 72 79 44 69 61 6c 50 61 72 61 6d 73 41 } 		$a_01_3 = {52 61 73 53 65 74 45 6e 74 72 79 50 72 6f 70 65 72 74 69 65 73 41 } 		$a_01_4 = {52 61 73 48 61 6e 67 55 70 41 } 		$a_01_5 = {52 61 73 47 65 74 43 6f 6e 6e 65 63 74 53 74 61 74 75 73 41 } 		$a_01_6 = {52 61 73 45 6e 75 6d 44 65 76 69 63 65 73 41 } 		$a_01_7 = {52 61 73 47 65 74 45 6e 74 72 79 50 72 6f 70 65 72 74 69 65 73 41 } 		$a_01_8 = {52 61 73 45 6e 75 6d 43 6f 6e 6e 65 63 74 69 6f 6e 73 41 } 		$a_01_9 = {52 61 73 44 69 61 6c 41 } 		$a_01_10 = {53 68 65 6c 6c 45 78 65 63 75 74 65 41 } 	condition:
		((#a_01_0  & 1)*100+(#a_01_1  & 1)*1+(#a_01_2  & 1)*1+(#a_01_3  & 1)*1+(#a_01_4  & 1)*1+(#a_01_5  & 1)*1+(#a_01_6  & 1)*1+(#a_01_7  & 1)*1+(#a_01_8  & 1)*1+(#a_01_9  & 1)*1+(#a_01_10  & 1)*50) >=159
 
}

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

71ad0037-e4c3-44e6-b38d-bd6e71d348bc

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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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