Trojan_Linux_MsfShellBin_F

YARA detection rule by roadwy

Trojan:Linux/MsfShellBin.F,SIGNATURE_TYPE_ELFHSTR_EXT,02 00 02 00 03 00 00

rule Trojan_Linux_MsfShellBin_F{
	meta:
		description = "Trojan:Linux/MsfShellBin.F,SIGNATURE_TYPE_ELFHSTR_EXT,02 00 02 00 03 00 00 "
		
	strings :
		$a_03_0 = {31 c9 31 db 53 53 68 ?? ?? ?? ?? 68 ?? ?? ?? ?? 68 ?? ?? ?? ?? 68 ?? ?? ?? ?? 53 66 68 ?? ?? 66 68 0a 00 89 e1 6a 1c 51 56 31 db 31 c0 b0 66 b3 03 89 e1 cd 80 31 db 39 d8 75 36 31 c9 f7 e1 89 f3 b0 3f cd 80 31 c0 41 89 f3 b0 3f cd 80 31 c0 41 89 f3 b0 3f cd 80 } 		$a_03_1 = {31 db 53 6a 0a f7 e3 89 e3 b0 a2 cd 80 e9 ?? ?? ?? ?? c3 } 		$a_01_2 = {31 db f7 e3 6a 06 6a 01 6a 0a 89 e1 b0 66 b3 01 cd 80 89 c6 } 	condition:
		((#a_03_0  & 1)*2+(#a_03_1  & 1)*1+(#a_01_2  & 1)*1) >=2
 
}

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

7576f31d-016f-4cbb-be37-8fac75257924

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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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