Invoke-SSharp - Empire Module


This page contains detailed information about how to use the powershell/code_execution/invoke_ssharp Empire module. For list of all Empire modules, visit the Empire Module Library.

Module Overview

Name: Invoke-SSharp
Module: powershell/code_execution/invoke_ssharp
Source code [1]: empire/server/modules/powershell/code_execution/invoke_ssharp.yaml
Source code [2]: empire/server/data/module_source/code_execution/Invoke-SSharp.ps1
MITRE ATT&CK: T1059
Language: PowerShell
Needs admin: No
OPSEC safe: Yes
Background: Yes

The invoke_ssharp module executes SSharp from an embedded compiler within PowerShell. Compilation does not call csc.exe.

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 invoke_ssharp 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 invoke_ssharp module:

Agent
Agent to run module on.

source
Base64 encoded SSharp code.

Invoke_ssharp Example Usage

Here's an example of how to use the invoke_ssharp 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 powershell/code_execution/invoke_ssharp

 Author       @byt3bl33d3r                                                 
              @Cx01N                                                       
 Background   True                                                         
 Comments     https://github.com/PetroProtsyk/SSharp                       
              https://github.com/byt3bl33d3r/OffensiveDLR                  
              https://github.com/BC-SECURITY/OffensiveDLR                  
 Description  Executes SSharp from an embedded compiler within PowerShell. 
              Compilation does not call csc.exe                            
 Language     powershell                                                   
 Name         powershell/code_execution/invoke_ssharp                      
 NeedsAdmin   False                                                        
 OpsecSafe    True                                                         
 Techniques   http://attack.mitre.org/techniques/T1059                     


,Record Options--,----------,----------------------------,
| Name   | Value | Required | Description                |
|--------|-------|----------|----------------------------|
| Agent  |       | True     | Agent to run module on.    |
|--------|-------|----------|----------------------------|
| source |       | True     | Base64 encoded SSharp code |
'--------'-------'----------'----------------------------'

(Empire: usemodule/powershell/code_execution/invoke_ssharp) > set Agent Y4LHEV83
[*] Set Agent to Y4LHEV83
(Empire: usemodule/powershell/code_execution/invoke_ssharp) > set source value
[*] Set source to value
(Empire: usemodule/powershell/code_execution/invoke_ssharp) > execute
[*] Tasked Y4LHEV83 to run Task 1
...

Now wait for the results to come.

Authors

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.