Backdoor_Win32_Zxshell_B_dha

YARA detection rule by roadwy

Backdoor:Win32/Zxshell.B!dha,SIGNATURE_TYPE_PEHSTR_EXT,03 00 03 00 03 00 00

rule Backdoor_Win32_Zxshell_B_dha{
	meta:
		description = "Backdoor:Win32/Zxshell.B!dha,SIGNATURE_TYPE_PEHSTR_EXT,03 00 03 00 03 00 00 "
		
	strings :
		$a_01_0 = {5a 58 4e 43 20 5b 2d 6c 20 2d 66 20 2d 65 20 3c 63 6d 64 3e 5d 20 5b 2d 68 20 3c 49 50 3e 5d 20 5b 2d 70 20 3c 50 6f 72 74 3e 5d 20 5b 20 71 75 69 74 6e 63 20 5d } 		$a_01_1 = {5a 58 4e 43 20 2d 65 20 63 6d 64 2e 65 78 65 20 78 2e 78 2e 78 2e 78 20 39 39 20 28 73 65 6e 64 20 61 20 63 6d 64 73 68 65 6c 6c 29 0d 0a } 		$a_01_2 = {53 68 61 72 65 53 68 65 6c 6c 20 49 50 20 50 6f 72 74 20 2d 6e 63 0d 0a } 	condition:
		((#a_01_0  & 1)*1+(#a_01_1  & 1)*1+(#a_01_2  & 1)*1) >=3
 
}

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

98d19dd2-96a2-4ed4-a8e6-84feadb75b7b

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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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