Backdoor_Win32_Zapchast_D

YARA detection rule by roadwy

Backdoor:Win32/Zapchast.D,SIGNATURE_TYPE_PEHSTR,2c 00 28 00 08 00 00

rule Backdoor_Win32_Zapchast_D{
	meta:
		description = "Backdoor:Win32/Zapchast.D,SIGNATURE_TYPE_PEHSTR,2c 00 28 00 08 00 00 "
		
	strings :
		$a_01_0 = {47 72 65 65 74 69 6e 67 20 43 61 72 64 } 		$a_01_1 = {66 69 72 65 77 61 6c 6c 20 61 64 64 20 61 6c 6c 6f 77 65 64 70 72 6f 67 72 61 6d 20 43 3a 5c 57 49 4e 44 4f 57 53 5c 54 65 6d 70 5c 73 70 6f 6f 6c 5c 73 70 6f 6f 6c 73 76 2e 65 78 65 20 73 70 6f 6f 6c 73 76 } 		$a_01_2 = {53 59 53 54 45 4d 5c 43 75 72 72 65 6e 74 43 6f 6e 74 72 6f 6c 53 65 74 5c 53 65 72 76 69 63 65 73 5c 73 76 63 68 6f 73 74 5c 50 61 72 61 6d 65 74 65 72 73 } 		$a_01_3 = {40 24 26 25 30 34 5c 74 61 73 6b 62 61 72 2e 64 6c 6c } 		$a_01_4 = {40 24 26 25 30 34 5c 78 6d 61 73 2e 6a 70 67 } 		$a_01_5 = {40 24 26 25 30 34 5c 64 72 2e 6d 72 63 } 		$a_01_6 = {40 24 26 25 30 34 5c 70 6f 70 75 70 73 2e 74 78 74 } 		$a_01_7 = {2b 48 20 2b 53 20 40 24 26 25 30 32 5c 74 65 6d 70 5c 73 70 6f 6f 6c } 	condition:
		((#a_01_0  & 1)*1+(#a_01_1  & 1)*10+(#a_01_2  & 1)*1+(#a_01_3  & 1)*1+(#a_01_4  & 1)*10+(#a_01_5  & 1)*10+(#a_01_6  & 1)*1+(#a_01_7  & 1)*10) >=40
 
}

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

bc033929-1231-487e-873d-55e7e16052c6

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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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