Backdoor_Linux_Gafgyt_K_xp

YARA detection rule by roadwy

Backdoor:Linux/Gafgyt.K!xp,SIGNATURE_TYPE_ELFHSTR_EXT,03 00 03 00 0a 00 00

rule Backdoor_Linux_Gafgyt_K_xp{
	meta:
		description = "Backdoor:Linux/Gafgyt.K!xp,SIGNATURE_TYPE_ELFHSTR_EXT,03 00 03 00 0a 00 00 "
		
	strings :
		$a_00_0 = {53 43 41 4e 4e 45 52 20 53 54 41 52 54 45 44 } 		$a_00_1 = {2f 62 69 6e 2f 62 75 73 79 62 6f 78 20 63 70 20 2f 62 69 6e 2f 62 75 73 79 62 6f 78 20 45 43 48 4f 42 4f 54 3b 20 3e 20 45 43 48 4f 42 4f 54 3b 20 2f 62 69 6e 2f 62 75 73 79 62 6f 78 20 63 68 6d 6f 64 20 37 37 37 20 45 43 48 4f 42 4f 54 3b 20 45 43 48 4f 42 4f 54 } 		$a_00_2 = {2f 62 69 6e 2f 62 75 73 79 62 6f 78 20 45 43 48 4f 42 4f 54 3b 20 2f 62 69 6e 2f 62 75 73 79 62 6f 78 20 74 66 74 70 3b 20 2f 62 69 6e 2f 62 75 73 79 62 6f 78 20 77 67 65 74 } 		$a_00_3 = {45 43 48 4f 42 4f 54 5d 20 44 52 4f 50 50 49 4e 47 20 57 47 45 54 2f 54 46 54 50 20 4d 41 4c 57 41 52 45 } 		$a_02_4 = {2f 62 69 6e 2f 62 75 73 79 62 6f 78 20 77 67 65 74 20 68 74 74 70 3a 2f 2f [0-03] 2e [0-03] 2e [0-03] 2e [0-03] 2f [0-10] 2e 73 68 3b 20 2f 62 69 6e 2f 62 75 73 79 62 6f 78 20 63 68 6d 6f 64 20 2b 78 20 [0-10] 2e 73 68 3b 20 73 68 20 [0-10] 2e 73 68 } 		$a_00_5 = {48 4f 4c 44 40 44 44 6f 53 5d 20 46 6c 6f 6f 64 69 6e 67 20 25 73 3a 25 64 20 66 6f 72 20 25 64 20 73 65 63 6f 6e 64 73 } 		$a_00_6 = {77 67 65 74 20 49 50 2f 62 72 69 63 6b 65 72 2e 73 68 } 		$a_00_7 = {49 4e 53 54 41 4c 4c 49 4e 47 20 42 52 49 43 4b 45 52 } 		$a_00_8 = {49 4e 53 54 41 4c 4c 49 4e 47 20 4d 49 4e 45 52 } 		$a_00_9 = {42 72 69 63 6b 69 6e 67 20 41 6c 6c 20 54 68 65 20 53 6b 69 64 73 20 42 6f 74 73 } 	condition:
		((#a_00_0  & 1)*1+(#a_00_1  & 1)*1+(#a_00_2  & 1)*1+(#a_00_3  & 1)*1+(#a_02_4  & 1)*1+(#a_00_5  & 1)*1+(#a_00_6  & 1)*1+(#a_00_7  & 1)*1+(#a_00_8  & 1)*1+(#a_00_9  & 1)*1) >=3
 
}

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

e2ef3fe7-fc13-4a57-ad0e-d5aa63711191

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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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