Backdoor_Win32_Small_MC

YARA detection rule by roadwy

Backdoor:Win32/Small.MC,SIGNATURE_TYPE_PEHSTR,20 00 20 00 05 00 00

rule Backdoor_Win32_Small_MC{
	meta:
		description = "Backdoor:Win32/Small.MC,SIGNATURE_TYPE_PEHSTR,20 00 20 00 05 00 00 "
		
	strings :
		$a_01_0 = {5c 73 79 73 6d 6f 6e 2e 65 78 65 } 		$a_01_1 = {77 77 77 2e 72 69 6e 67 7a 2e 6f 72 67 } 		$a_01_2 = {62 61 63 6b 64 6f 6f 72 20 77 72 69 74 74 65 6e 20 62 79 } 		$a_01_3 = {57 53 41 53 6f 63 6b 65 74 41 } 		$a_01_4 = {53 6f 66 74 77 61 72 65 5c 4d 69 63 72 6f 73 6f 66 74 5c 57 69 6e 64 6f 77 73 5c 43 75 72 72 65 6e 74 56 65 72 73 69 6f 6e 5c 52 75 6e } 	condition:
		((#a_01_0  & 1)*10+(#a_01_1  & 1)*10+(#a_01_2  & 1)*10+(#a_01_3  & 1)*1+(#a_01_4  & 1)*1) >=32
 
}

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

1454d939-ef40-4586-b3c0-3eb4d5e8f088

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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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