Backdoor_Win32_Delf_XD

YARA detection rule by roadwy

Backdoor:Win32/Delf.XD,SIGNATURE_TYPE_PEHSTR_EXT,ffffffca 01 ffffffc4 01 13 00 00

rule Backdoor_Win32_Delf_XD{
	meta:
		description = "Backdoor:Win32/Delf.XD,SIGNATURE_TYPE_PEHSTR_EXT,ffffffca 01 ffffffc4 01 13 00 00 "
		
	strings :
		$a_00_0 = {53 4f 46 54 57 41 52 45 5c 42 6f 72 6c 61 6e 64 5c 44 65 6c 70 68 69 5c 52 54 4c } 		$a_00_1 = {4b 61 69 73 6f 66 74 20 48 54 54 50 47 65 74 } 		$a_00_2 = {53 00 6f 00 63 00 6b 00 65 00 74 00 20 00 69 00 73 00 20 00 61 00 6c 00 72 00 65 00 61 00 64 00 79 00 20 00 63 00 6f 00 6e 00 6e 00 65 00 63 00 74 00 65 00 64 00 } 		$a_00_3 = {54 49 64 54 43 50 43 6c 69 65 6e 74 } 		$a_00_4 = {52 65 63 65 69 76 65 20 6d 65 73 73 61 67 65 20 66 72 6f 6d 20 72 65 6d 6f 74 65 } 		$a_00_5 = {48 74 74 70 50 72 6f 78 79 } 		$a_01_6 = {49 6e 74 65 72 6e 65 74 52 65 61 64 46 69 6c 65 } 		$a_01_7 = {48 74 74 70 53 65 6e 64 52 65 71 75 65 73 74 41 } 		$a_00_8 = {46 74 70 50 75 74 46 69 6c 65 41 } 		$a_00_9 = {61 75 74 6f 72 75 6e 73 2e 65 78 65 } 		$a_00_10 = {70 72 6f 63 65 78 70 2e 65 78 65 } 		$a_00_11 = {4b 61 76 50 46 57 2e 45 58 45 } 		$a_00_12 = {4b 50 46 57 33 32 2e 45 58 45 } 		$a_00_13 = {50 46 57 2e 65 78 65 } 		$a_00_14 = {53 79 73 53 61 66 65 2e 65 78 65 } 		$a_00_15 = {46 69 72 65 57 61 6c 6c 2e 65 78 65 } 		$a_00_16 = {4d 63 41 66 65 65 46 69 72 65 2e 65 78 65 } 		$a_00_17 = {46 69 72 65 54 72 61 79 2e 65 78 65 } 		$a_00_18 = {5a 6f 6e 65 41 6c 61 72 6d } 	condition:
		((#a_00_0  & 1)*50+(#a_00_1  & 1)*50+(#a_00_2  & 1)*50+(#a_00_3  & 1)*50+(#a_00_4  & 1)*50+(#a_00_5  & 1)*50+(#a_01_6  & 1)*50+(#a_01_7  & 1)*50+(#a_00_8  & 1)*50+(#a_00_9  & 1)*1+(#a_00_10  & 1)*1+(#a_00_11  & 1)*1+(#a_00_12  & 1)*1+(#a_00_13  & 1)*1+(#a_00_14  & 1)*1+(#a_00_15  & 1)*1+(#a_00_16  & 1)*1+(#a_00_17  & 1)*1+(#a_00_18  & 1)*1) >=452
 
}

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

b5d050b8-bb7c-407f-a164-aa081f0151f4

Propose edits, view related rules, and engage with the community through comments.

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 ]]

Community Discussion