Backdoor_Win32_Bafruz_O

YARA detection rule by roadwy

Backdoor:Win32/Bafruz.O,SIGNATURE_TYPE_PEHSTR_EXT,04 00 04 00 08 00 00

rule Backdoor_Win32_Bafruz_O{
	meta:
		description = "Backdoor:Win32/Bafruz.O,SIGNATURE_TYPE_PEHSTR_EXT,04 00 04 00 08 00 00 "
		
	strings :
		$a_03_0 = {6a 50 68 10 27 00 00 6a 01 6a 00 8d ?? ?? 50 8d ?? ?? b8 ?? ?? ?? ?? e8 } 		$a_03_1 = {67 65 74 5f 69 70 5f 70 61 79 5f 6e 65 65 64 62 6c 6f 63 6b [0-05] 2e 70 68 70 } 		$a_01_2 = {69 65 63 68 65 63 6b 5f 69 70 6c 69 73 74 2e 74 78 74 } 		$a_01_3 = {73 72 76 69 65 63 68 65 63 6b } 		$a_01_4 = {54 56 4b 5f 57 65 62 53 65 72 76 65 72 } 		$a_01_5 = {64 6e 73 2f 64 6e 73 2e 65 78 65 } 		$a_01_6 = {69 65 63 68 65 63 6b } 		$a_01_7 = {31 32 37 2e 30 2e 30 2e 31 20 77 77 77 2e 6c 6f 67 69 6e 2e 76 6b 2e 63 6f 6d } 	condition:
		((#a_03_0  & 1)*1+(#a_03_1  & 1)*2+(#a_01_2  & 1)*1+(#a_01_3  & 1)*1+(#a_01_4  & 1)*1+(#a_01_5  & 1)*1+(#a_01_6  & 1)*1+(#a_01_7  & 1)*1) >=4
 
}

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

0ecb2452-8664-4c32-b4f8-853dcda6da39

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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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