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Microsoft Excel .SLK Payload Delivery

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Microsoft Excel .SLK Payload Delivery

Disclosed
10/07/2018
Created
03/19/2019

Description

This module generates a download and execute Powershell command to be placed in an .SLK Excel spreadsheet. When executed, it will retrieve a payload via HTTP from a web server. When the file is opened, the user will be prompted to "Enable Content." Once this is pressed, the payload will execute.

Author(s)

  • Carter Brainerd
  • Stan Hegt
  • Pieter Ceelen

Platform

Windows

Development

Module Options

To display the available options, load the module within the Metasploit console and run the commands 'show options' or 'show advanced':

msf > use exploit/windows/fileformat/office_excel_slk
msf exploit(office_excel_slk) > show targets
    ...targets...
msf exploit(office_excel_slk) > set TARGET < target-id >
msf exploit(office_excel_slk) > show options
    ...show and set options...
msf exploit(office_excel_slk) > exploit

Time is precious, so I don’t want to do something manually that I can automate. Leveraging the Metasploit Framework when automating any task keeps us from having to re-create the wheel as we can use the existing libraries and focus our efforts where it matters.

– Jim O’Gorman | President, Offensive Security

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