Backdoor_Win32_Bifrose_gen_B

YARA detection rule by roadwy

Backdoor:Win32/Bifrose.gen!B,SIGNATURE_TYPE_PEHSTR_EXT,09 00 07 00 0d 00 00

rule Backdoor_Win32_Bifrose_gen_B{
	meta:
		description = "Backdoor:Win32/Bifrose.gen!B,SIGNATURE_TYPE_PEHSTR_EXT,09 00 07 00 0d 00 00 "
		
	strings :
		$a_00_0 = {4e 6f 72 73 65 20 4d 79 74 68 6f 6c 6f 67 79 2c 20 42 69 66 72 6f 73 74 20 42 72 69 64 67 65 } 		$a_00_1 = {67 75 61 72 64 69 61 6e 20 69 73 20 74 68 65 20 67 6f 64 20 48 65 69 6d 64 61 6c 6c 2e } 		$a_00_2 = {4c 69 73 74 65 6e 69 6e 67 20 6f 6e 20 70 6f 72 74 20 25 31 21 } 		$a_00_3 = {75 63 63 65 73 73 66 75 6c 6c 79 20 6b 69 6c 6c 65 64 20 70 72 6f 63 65 73 73 } 		$a_00_4 = {3c 52 61 6d 64 69 73 6b 3e 00 00 00 3c 52 65 6d } 		$a_00_5 = {5c 42 49 46 52 4f 53 54 5c 42 } 		$a_01_6 = {4d 63 41 66 65 65 20 41 6e 74 69 76 69 72 75 73 } 		$a_00_7 = {61 76 67 63 63 33 32 2e 65 78 65 } 		$a_00_8 = {50 65 73 74 50 61 74 72 6f 6c 2e 65 78 65 } 		$a_00_9 = {4e 76 63 63 2e 65 78 65 } 		$a_00_10 = {49 6e 6f 52 70 63 2e 65 78 65 } 		$a_00_11 = {25 64 20 6b 62 20 6f 66 } 		$a_00_12 = {44 6e 73 2f 49 50 20 31 } 	condition:
		((#a_00_0  & 1)*1+(#a_00_1  & 1)*1+(#a_00_2  & 1)*1+(#a_00_3  & 1)*1+(#a_00_4  & 1)*1+(#a_00_5  & 1)*1+(#a_01_6  & 1)*1+(#a_00_7  & 1)*1+(#a_00_8  & 1)*1+(#a_00_9  & 1)*1+(#a_00_10  & 1)*1+(#a_00_11  & 1)*1+(#a_00_12  & 1)*1) >=7
 
}

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

ace0b8e1-d09d-46ad-b945-222631bade56

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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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