Trojan_Win32_WebShell_Y

YARA detection rule by roadwy

Trojan:Win32/WebShell.Y,SIGNATURE_TYPE_PEHSTR,05 00 05 00 06 00 00

rule Trojan_Win32_WebShell_Y{
	meta:
		description = "Trojan:Win32/WebShell.Y,SIGNATURE_TYPE_PEHSTR,05 00 05 00 06 00 00 "
		
	strings :
		$a_01_0 = {50 61 67 65 5f 4c 6f 61 64 } 		$a_01_1 = {50 4f 53 54 46 69 6c 65 55 70 6c 6f 61 64 } 		$a_01_2 = {50 4f 53 54 46 69 6c 65 44 6f 77 6e 6c 6f 61 64 } 		$a_01_3 = {50 4f 53 54 46 69 6c 65 44 65 6c 65 74 65 } 		$a_01_4 = {50 4f 53 54 43 6d 64 45 78 65 63 75 74 65 } 		$a_01_5 = {2f 00 63 00 6f 00 6e 00 74 00 61 00 63 00 74 00 2e 00 61 00 73 00 70 00 78 00 } 	condition:
		((#a_01_0  & 1)*1+(#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) >=5
 
}

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

da50c732-f9ec-4971-8c47-39b47f4d0248

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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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