Nmap stuxnet-detect NSE Script


This page contains detailed information about how to use the stuxnet-detect NSE script. For list of all NSE scripts, visit the Nmap NSE Library.

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Overview
Error Messages

Script Overview

Script source code: https://github.com/nmap/nmap/tree/master/scripts/stuxnet-detect.nse
Script categories: discovery, intrusive
Target service / protocol: smb, netbios, tcp, udp
Target network port(s): 137, 139, 445
List of CVEs: -

Script Description

The stuxnet-detect.nse script detects whether a host is infected with the Stuxnet worm (http://en.wikipedia.org/wiki/Stuxnet).

An executable version of the Stuxnet infection will be downloaded if a format for the filename is given on the command line.

Stuxnet-detect NSE Script Arguments

This is a full list of arguments supported by the stuxnet-detect.nse script:

stuxnet-detect.save

Path to save Stuxnet executable under, with %h replaced by the host's IP address, and %v replaced by the version of Stuxnet.

smbdomain

The domain to log in with. If you aren't in a domain environment, then anything will (should?) be accepted by the server.

smbhash

A password hash to use when logging in. This is given as a single hex string (32 characters) or a pair of hex strings (both 32 characters, optionally separated by a single character). These hashes are the LanMan or NTLM hash of the user's password, and are stored on disk or in memory. They can be retrieved from memory using the fgdump or pwdump tools.

smbnoguest

Use to disable usage of the 'guest' account.

smbpassword

The password to connect with. Be cautious with this, since some servers will lock accounts if the incorrect password is given. Although it's rare that the Administrator account can be locked out, in the off chance that it can, you could get yourself in trouble. To use a blank password, leave this parameter off altogether.

smbtype

The type of SMB authentication to use. These are the possible options:

  • v1: Sends LMv1 and NTLMv1.
  • LMv1: Sends LMv1 only.
  • NTLMv1: Sends NTLMv1 only (default).
  • v2: Sends LMv2 and NTLMv2.
  • LMv2: Sends LMv2 only.
  • NTLMv2: Doesn't exist; the protocol doesn't support NTLMv2 alone. The default, NTLMv1, is a pretty decent compromise between security and compatibility. If you are paranoid, you might want to use v2 or lmv2 for this. (Actually, if you're paranoid, you should be avoiding this protocol altogether!). If you're using an extremely old system, you might need to set this to v1 or lm, which are less secure but more compatible. For information, see smbauth.lua.

smbusername

The SMB username to log in with. The forms "DOMAIN\username" and "username@DOMAIN" are not understood. To set a domain, use the smbdomain argument.

randomseed

Set to a value to change the filenames/service names that are randomly generated.

smbbasic

Forces the authentication to use basic security, as opposed to "extended security". Against most modern systems, extended security should work, but there may be cases where you want to force basic. There's a chance that you'll get better results for enumerating users if you turn on basic authentication.

smbport

Override the default port choice. If smbport is open, it's used. It's assumed to be the same protocol as port 445, not port 139. Since it probably isn't possible to change Windows' ports normally, this is mostly useful if you're bouncing through a relay or something.

smbsign

Controls whether or not server signatures are checked in SMB packets. By default, on Windows, server signatures aren't enabled or required. By default, this library will always sign packets if it knows how, and will check signatures if the server says to. Possible values are:

  • force: Always check server signatures, even if server says it doesn't support them (will Probably fail, but is technically more secure).
  • negotiate: [default] Use signatures if server supports them.
  • ignore: Never check server signatures. Not recommended.
  • disable: Don't send signatures, at all, and don't check the server's. not recommended. More information on signatures can be found in smbauth.lua.

- - -
To use these script arguments, add them to the Nmap command line using the --script-args arg1=value,[arg2=value,..] syntax. For example:

nmap --script=stuxnet-detect --script-args stuxnet-detect.save=value,smbdomain=value <target>

Stuxnet-detect NSE Script Example Usage

Here's an example of how to use the stuxnet-detect.nse script:

nmap --script stuxnet-detect -p 445 <host>

Stuxnet-detect NSE Script Example Output

Here's a sample output from the stuxnet-detect.nse script:

PORT    STATE SERVICE      REASON
445/tcp open  microsoft-ds syn-ack

Host script results:
|_stuxnet-detect: INFECTED (version 4c:04:00:00:01:00:00:00)

Stuxnet-detect NSE Script Example XML Output

There is no sample XML output for this module. However, by providing the -oX <file> option, Nmap will produce a XML output and save it in the file.xml file.

Author

  • Mak Kolybabi

References

See Also

Visit Nmap NSE Library for more scripts.

The stuxnet-detect.nse script may fail with the following error messages. Check for the possible causes by using the code snippets highlighted below found in the script source code. This can often times help in identifying the root cause of the problem.

Failed to establish session on %s.

Here is a relevant code snippet related to the "Failed to establish session on %s." error message:

47:	  local file, result, session, status, version
48:	
49:	  -- Create an SMB session.
50:	  status, session = msrpc.start_smb(host, path)
51:	  if not status then
52:	    stdnse.debug1("Failed to establish session on %s.", path)
53:	    return false, nil
54:	  end
55:	
56:	  -- Bind to the Stuxnet service.
57:	  status, result = msrpc.bind(session, STUXNET_UUID, STUXNET_VERSION, nil)

Failed to bind to Stuxnet service.

Here is a relevant code snippet related to the "Failed to bind to Stuxnet service." error message:

54:	  end
55:	
56:	  -- Bind to the Stuxnet service.
57:	  status, result = msrpc.bind(session, STUXNET_UUID, STUXNET_VERSION, nil)
58:	  if not status or result["ack_result"] ~= 0 then
59:	    stdnse.debug1("Failed to bind to Stuxnet service.")
60:	    msrpc.stop_smb(session)
61:	    return false, nil
62:	  end
63:	
64:	  -- Request version of Stuxnet infection.

Failed to retrieve Stuxnet version: %s

Here is a relevant code snippet related to the "Failed to retrieve Stuxnet version: %s" error message:

62:	  end
63:	
64:	  -- Request version of Stuxnet infection.
65:	  status, result = msrpc.call_function(session, RPC_GET_VERSION, "")
66:	  if not status then
67:	    stdnse.debug1("Failed to retrieve Stuxnet version: %s", result)
68:	    msrpc.stop_smb(session)
69:	    return false, nil
70:	  end
71:	  version = stdnse.tohex(result.arguments, {separator = ":"})
72:

Failed to retrieve Stuxnet executable: %s

Here is a relevant code snippet related to the "Failed to retrieve Stuxnet executable: %s" error message:

74:	  if save then
75:	    local file, fmt
76:	
77:	    status, result = msrpc.call_function(session, RPC_GET_EXECUTABLE, "")
78:	    if not status then
79:	      stdnse.debug1("Failed to retrieve Stuxnet executable: %s", result)
80:	      msrpc.stop_smb(session)
81:	      return true, version
82:	    end
83:	
84:	    fmt = save:gsub("%%h", host.ip)

Failed to open file: %s

Here is a relevant code snippet related to the "Failed to open file: %s" error message:

87:	    if file then
88:	      stdnse.debug1("Wrote %d bytes to file %s.", #result.arguments, fmt)
89:	      file:write(result.arguments)
90:	      file:close()
91:	    else
92:	      stdnse.debug1("Failed to open file: %s", fmt)
93:	    end
94:	  end
95:	
96:	  -- Destroy the SMB session
97:	  msrpc.stop_smb(session)

Version

This page has been created based on Nmap version 7.92.

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