Backdoor_Win32_Zegost_O

YARA detection rule by roadwy

Backdoor:Win32/Zegost.O,SIGNATURE_TYPE_PEHSTR_EXT,05 00 05 00 06 00 00

rule Backdoor_Win32_Zegost_O{
	meta:
		description = "Backdoor:Win32/Zegost.O,SIGNATURE_TYPE_PEHSTR_EXT,05 00 05 00 06 00 00 "
		
	strings :
		$a_03_0 = {41 c6 44 24 ?? 6e c6 44 24 ?? 67 c6 44 24 ?? 65 } 		$a_00_1 = {5c 4d 79 49 6e 66 6f 72 6d 61 74 69 6f 6e 73 2e 69 6e 69 } 		$a_00_2 = {25 73 3a 5c 50 72 6f 67 72 61 6d 20 46 69 6c 65 73 5c 43 6f 6d 6d 6f 6e 20 46 69 6c 65 73 5c 25 63 25 63 25 63 25 63 25 63 25 63 25 63 2e 25 63 25 63 25 63 25 63 25 63 } 		$a_00_3 = {25 73 2c 43 6f 64 65 4d 61 69 6e 20 25 73 } 		$a_00_4 = {5c 41 6e 67 65 6c 2e 63 63 00 } 		$a_00_5 = {5c 74 65 6d 70 5c 50 6c 67 75 69 6e 73 2e 74 78 74 00 } 	condition:
		((#a_03_0  & 1)*3+(#a_00_1  & 1)*1+(#a_00_2  & 1)*1+(#a_00_3  & 1)*1+(#a_00_4  & 1)*1+(#a_00_5  & 1)*1) >=5
 
}

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

f07d34b1-1602-469e-8b91-348db72d78d7

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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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