Backdoor_Win32_Fribet

YARA detection rule by roadwy

Backdoor:Win32/Fribet,SIGNATURE_TYPE_PEHSTR_EXT,05 00 05 00 05 00 00

rule Backdoor_Win32_Fribet{
	meta:
		description = "Backdoor:Win32/Fribet,SIGNATURE_TYPE_PEHSTR_EXT,05 00 05 00 05 00 00 "
		
	strings :
		$a_01_0 = {66 72 65 65 74 69 62 65 74 2e 6c 61 6d 61 6c 69 66 65 2e 63 6f 6d } 		$a_01_1 = {66 72 65 65 20 74 69 62 65 74 } 		$a_01_2 = {4d 72 78 79 4d 75 74 65 78 32 } 		$a_01_3 = {44 6c 6c 4e 61 6d 65 00 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 20 4e 54 5c 43 75 72 72 65 6e 74 56 65 72 73 69 6f 6e 5c 57 69 6e 6c 6f 67 6f 6e 5c 4e 6f 74 69 66 79 5c 69 70 73 65 63 } 		$a_01_4 = {46 6b 53 68 75 74 64 6f 77 6e 00 00 53 74 61 72 74 75 70 00 46 6b 53 74 61 72 74 75 70 00 00 00 63 6c 61 73 73 69 64 00 46 4b 69 6e 67 } 	condition:
		((#a_01_0  & 1)*1+(#a_01_1  & 1)*1+(#a_01_2  & 1)*1+(#a_01_3  & 1)*1+(#a_01_4  & 1)*1) >=5
 
}

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

a7b213ef-9f37-4994-8a1e-1b0689c44fa7

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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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