Backdoor_Win32_Forusfank_A

YARA detection rule by roadwy

Backdoor:Win32/Forusfank.A,SIGNATURE_TYPE_PEHSTR_EXT,ffffffbc 02 58 02 09 00 00

rule Backdoor_Win32_Forusfank_A{
	meta:
		description = "Backdoor:Win32/Forusfank.A,SIGNATURE_TYPE_PEHSTR_EXT,ffffffbc 02 58 02 09 00 00 "
		
	strings :
		$a_01_0 = {6d 69 72 61 6e 64 61 2d 69 6d 2e 6f 72 67 } 		$a_01_1 = {70 69 64 67 69 6e 2d 64 65 76 65 6c 5c 70 69 64 67 69 6e 2d } 		$a_01_2 = {6d 65 73 73 65 6e 67 65 72 40 6d 69 63 72 6f 73 6f 66 74 2e 63 6f 6d } 		$a_01_3 = {72 75 73 69 6e 66 6f 2e 65 78 65 } 		$a_01_4 = {3c 6d 6c 20 6c 3d 22 31 22 3e 3c 64 20 6e 3d 22 68 6f 74 6d 61 69 6c 2e 63 6f 6d 22 3e 3c 63 20 6e 3d 22 25 73 22 20 6c 3d 22 33 22 } 		$a_01_5 = {7b 38 37 30 43 39 46 34 32 2d 30 43 41 44 2d 34 38 41 37 2d 38 37 41 45 2d 39 34 38 44 32 36 35 43 32 38 46 31 7d } 		$a_01_6 = {47 4c 4f 42 41 4c 5f 46 49 4e 41 4c 5f 44 41 54 41 5f 46 49 4e 4e 49 53 48 49 45 4c 44 5f 42 41 4c 4c } 		$a_01_7 = {67 61 74 65 77 61 79 2e 64 6c 6c 3f 53 65 73 73 69 6f 6e 49 44 3d 25 73 } 		$a_01_8 = {49 4c 54 58 43 21 34 49 58 42 35 46 42 2a 50 58 } 	condition:
		((#a_01_0  & 1)*-300+(#a_01_1  & 1)*-300+(#a_01_2  & 1)*-300+(#a_01_3  & 1)*200+(#a_01_4  & 1)*200+(#a_01_5  & 1)*100+(#a_01_6  & 1)*100+(#a_01_7  & 1)*50+(#a_01_8  & 1)*50) >=600
 
}

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

d83b58b2-5ed6-47f0-b228-e147d6b6ca0a

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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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