diff --git a/src/net_processing.cpp b/src/net_processing.cpp
--- a/src/net_processing.cpp
+++ b/src/net_processing.cpp
@@ -3358,6 +3358,7 @@
             HexStr(hash.begin(), hash.begin() + CMessageHeader::CHECKSUM_SIZE),
             HexStr(hdr.pchChecksum,
                    hdr.pchChecksum + CMessageHeader::CHECKSUM_SIZE));
+        Misbehaving(pfrom, 100, "msg-header-checksum-mismatch");
         return fMoreWork;
     }
 
diff --git a/test/functional/abc-invalid-message.py b/test/functional/abc-invalid-message.py
new file mode 100755
--- /dev/null
+++ b/test/functional/abc-invalid-message.py
@@ -0,0 +1,59 @@
+#!/usr/bin/env python3
+# Copyright (c) 2019 The Bitcoin developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
+"""ABC Invalid Message Test
+
+Test that invalid messages get rejected and/or ban the sender as expected for
+each case.
+"""
+
+import struct
+from test_framework.mininode import (
+    NetworkThread,
+    NodeConn,
+    NodeConnCB,
+)
+from test_framework.test_framework import BitcoinTestFramework
+from test_framework.util import (
+    p2p_port,
+)
+
+
+def msg_bad_checksum(connection):
+    command = b"badcommand"
+    data = b""
+    tmsg = connection.MAGIC_BYTES[connection.network]
+    tmsg += command
+    tmsg += b"\x00" * (12 - len(command))
+    tmsg += struct.pack("<I", len(data))
+    #th = sha256(data)
+    #h = sha256(th)
+    #tmsg += h[:4]
+    tmsg += b"1234"
+    tmsg += data
+    return tmsg
+
+
+class InvalidMessageTest(BitcoinTestFramework):
+    def set_test_params(self):
+        self.setup_clean_chain = False
+        self.num_nodes = 1
+
+    def run_test(self):
+        # Create a P2P connection to one of the nodes
+        node0 = NodeConnCB()
+        connections = []
+        connections.append(
+            NodeConn('127.0.0.1', p2p_port(0), self.nodes[0], node0))
+        node0.add_connection(connections[0])
+
+        NetworkThread().start()
+        node0.wait_for_verack()
+
+        node0.send_raw_message(msg_bad_checksum(connections[0]))
+        node0.wait_for_disconnect()
+
+
+if __name__ == '__main__':
+    InvalidMessageTest().main()
diff --git a/test/functional/test_framework/mininode.py b/test/functional/test_framework/mininode.py
--- a/test/functional/test_framework/mininode.py
+++ b/test/functional/test_framework/mininode.py
@@ -1375,6 +1375,12 @@
         else:
             logger.error("Cannot send message. No connection to node!")
 
+    def send_raw_message(self, message):
+        if self.connection:
+            self.connection.send_raw_message(message)
+        else:
+            logger.error("Cannot send raw message. No connection to node!")
+
     def send_and_ping(self, message):
         self.send_message(message)
         self.sync_with_ping()
@@ -1562,6 +1568,15 @@
         h = sha256(th)
         tmsg += h[:4]
         tmsg += data
+        self.set_sendbuf(tmsg, pushbuf)
+
+    def send_raw_message(self, rawmessage, pushbuf=False):
+        if self.state != "connected" and not pushbuf:
+            raise IOError('Not connected, no pushbuf')
+        self._log_message("send", rawmessage)
+        self.set_sendbuf(rawmessage, pushbuf)
+
+    def set_sendbuf(self, tmsg, pushbuf=False):
         with mininode_lock:
             if (len(self.sendbuf) == 0 and not pushbuf):
                 try: