Create ssh_backdoor

malware/ssh_backdoor

+rule custom_ssh_backdoor_server {
+	meta:
+		description = "Custome SSH backdoor based on python and paramiko - file server.py"
+		author = "Florian Roth"
+		reference = "https://goo.gl/S46L3o"
+		date = "2015-05-14"
+		hash = "0953b6c2181249b94282ca5736471f85d80d41c9"
+	strings:
+		$s0 = "command= raw_input(\"Enter command: \").strip('n')" fullword ascii
+		$s1 = "print '[-] (Failed to load moduli -- gex will be unsupported.)'" fullword ascii
+		$s2 = "print '[-] Listen/bind/accept failed: ' + str(e)" fullword ascii
+		$s3 = "chan.send(command)" fullword ascii
+		$s4 = "print '[-] SSH negotiation failed.'" fullword ascii
+		$s5 = "except paramiko.SSHException, x:" fullword ascii
+	condition:
+		filesize < 10KB and 5 of them
+}