Backdoor_Win32_Feljina_A

YARA detection rule by roadwy

Backdoor:Win32/Feljina.A,SIGNATURE_TYPE_PEHSTR_EXT,14 00 14 00 13 00 00

rule Backdoor_Win32_Feljina_A{
	meta:
		description = "Backdoor:Win32/Feljina.A,SIGNATURE_TYPE_PEHSTR_EXT,14 00 14 00 13 00 00 "
		
	strings :
		$a_03_0 = {01 00 83 c4 0c c6 45 ec a2 c6 45 ed 13 c6 45 ee ?? c6 45 ef } 		$a_01_1 = {6c 72 3a 25 64 2c 25 64 2c 25 64 3b 6c 61 3a 25 64 2c 25 64 2c 25 64 3b 63 72 3a 25 64 2c 25 64 2c 25 64 } 		$a_01_2 = {25 64 2c 25 64 2c 25 64 2c 78 78 3a 25 64 6b 6b 3a 30 78 25 78 } 		$a_01_3 = {53 4f 46 54 57 41 52 45 5c 4d 69 63 72 6f 73 6f 66 74 5c 57 69 6e 64 6f 77 73 5c 43 75 72 72 65 6e 74 56 65 72 73 69 6f 6e 5c 47 6f 6c 64 65 6e 4b 65 79 } 		$a_01_4 = {61 6e 73 5f 77 6f 72 6b } 		$a_01_5 = {47 65 74 48 74 6f 53 } 		$a_01_6 = {47 65 74 53 5f 50 55 42 4b 45 59 } 		$a_01_7 = {49 44 6e 6f 74 45 51 55 } 		$a_01_8 = {6a 69 61 6e 6a 69 6e 65 } 		$a_01_9 = {6e 65 77 6a 69 61 6e 6a 69 6e 65 } 		$a_01_10 = {53 65 6e 64 5f 53 5f 54 6f 5f 48 } 		$a_01_11 = {72 65 61 64 73 65 74 5f 69 6e 66 6f } 		$a_01_12 = {54 65 73 74 63 61 72 64 6f 6e } 		$a_01_13 = {61 73 6b 5f 77 6f 72 6b } 		$a_01_14 = {62 61 63 6b 48 61 72 64 5f 69 6e 66 6f } 		$a_01_15 = {65 78 65 79 65 6a 69 } 		$a_01_16 = {6e 65 77 5f 65 78 65 79 65 6a 69 } 		$a_01_17 = {73 65 74 6a 69 68 61 6f } 		$a_01_18 = {74 6d 70 73 68 61 6e 67 6a 69 } 	condition:
		((#a_03_0  & 1)*8+(#a_01_1  & 1)*4+(#a_01_2  & 1)*4+(#a_01_3  & 1)*2+(#a_01_4  & 1)*1+(#a_01_5  & 1)*1+(#a_01_6  & 1)*1+(#a_01_7  & 1)*1+(#a_01_8  & 1)*1+(#a_01_9  & 1)*1+(#a_01_10  & 1)*1+(#a_01_11  & 1)*1+(#a_01_12  & 1)*1+(#a_01_13  & 1)*1+(#a_01_14  & 1)*1+(#a_01_15  & 1)*1+(#a_01_16  & 1)*1+(#a_01_17  & 1)*1+(#a_01_18  & 1)*1) >=20
 
}

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

eb9b1493-cfe5-412f-9026-b4a3d353e8f0

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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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