Apollo is a Windows agent written in C# using the 4.0 .NET Framework designed to be used in SpecterOps training offerings. Apollo lacks some evasive tradecraft provided by other commercial and open-source tools, such as more evasive network communications, PE manipulation, AMSI evasion, and otherwise; however, this project (in tandem with Mythic) is designed to introduce several quality of life improvements for an operator.

Installation

To install Apollo, you'll need Mythic installed on a remote computer. You can find installation instructions for Mythic at the Mythic project page.

From the Mythic install root, run the command:

./install_agent_from_github.sh https://github.com/MythicAgents/Apollo

Once installed, restart Mythic to build a new agent.

Notable Features

• Lateral Movement
• UAC Bypass
• Credential Tracking and Manipulation
• .NET Assembly and PowerShell Script Execution
• User Exploitation Suite
• SOCKSv5 Support

Commands Manual Quick Reference

Command	Syntax	Description
assembly_inject	assembly_inject [pid] [arch] [assembly] [args]	Execute .NET assembly in remote process.
bypassuac	bypassuac (modal popup)	Bypass UAC using the trusted mock directory technique.
cat	cat [file]	Retrieve the output of a file.
cd	cd [dir]	Change working directory.
cp	cp [source] [destination]	Copy a file from source to destination. Modal popup.
download	download [path]	Download a file off the target system.
execute_assembly	execute_assembly [assembly.exe] [args]	Execute a .NET assembly registered with register_assembly
exit	exit	Exit a callback.
get_current_injection_technique	get_current_injection_technique	Show the current injection technique used in postex jobs.
getprivs	getprivs	Enable as many privileges as possible for the current access token.
inject	inject	Inject a new payload into a remote process.
jobkill	jobkill [jid]	Kill a running job in the agent.
jobs	jobs	List all running jobs.
keylog	keylog [pid] [arch]	Inject a keylogger into a remote process.
kill	kill [pid]	Attempt to kill the process specified by [pid].
link	link	Link to an SMB agent (defunct, modal popup)
list_assemblies	list_assemblies	Show the assemblies currently cached by the agent.
list_injection_techniques	list_injection_techniques	List all injection techniques the agent can potentially use for postex jobs.
list_scripts	list_scripts	List all powershell scripts cached in the agent.
ls	ls [path]	List files and folders in [path]. Defaults to current working directory.
make_token	make_token	Impersonate a user using plaintext credentials. Modal popup.
mimikatz	mimikatz [args]	Execute Mimikatz with the specified arguments.
mkdir	mkdir [dir]	Create a directory.
mv	mv [source] [destination]	Move a file from source to destination. Modal popup.
net_dclist	net_dclist [domain.local]	List all domain controllers for the current or specified domain.
net_localgroup	net_localgroup [computer]	Retrieve local groups known by a computer. Default to localhost.
net_localgroup_member	net_localgroup_member	Retrieve membership information from a specified group on a given computer. Modal popup.
net_shares	net_shares [computer]	Show shares of a remote PC.
powerpick	powerpick [command]	Executes PowerShell in a sacrificial process.
powershell	powershell [command]	Executes PowerShell in your currently running process.
printspoofer	printspoofer -c [command]	Execute a command in SYSTEM integrity so long as you have SeImpersonate privileges.
ps_full	ps_full	List verbose process information, including company names, command lines, desktop sessions, window titles, and more.
ps	ps	List process information.
psclear	psclear	Clears all PowerShell scripts known to the agent that were imported by psimport.
psexec	psexec	Pivot to a remote computer by creating a new service. Modal popup.
psimport	psimport	Reigster a powershell script to import on subsequent execution in powerpick/psinject/powershell commands. Can import more than one script (e.g., PowerView and PowerUp can both be loaded simultaneously.) To clear the script imports, use psclear.
psinject	psinject [pid] [x86/x64] [command]	Executes PowerShell in the process specified by [pid]. Note: Currently stdout is not captured of child processes if not explicitly captured into a variable or via inline execution (such as $(whoami)).
pth	pth	Modal popup. Use Mimikatz to patch LSASS and import credentials into memory.
pwd	pwd	Print working directory.
reg_query_subkeys	reg_query_subkeys	Query all subkeys of the specified registry path. Needs to be of the format HKCU:\, HKLM:\, or HKCR:\.
reg_query_values	reg_query_values	Query all values of the specified registry path. Needs to be of the format HKCU:\, HKLM:\, or HKCR:\.
register_assembly	register_assembly	Register an assembly with the agent to execute later in execute_assembly. Modal popup for file upload.
rev2self	rev2self	Revert the access token to the original access token.
rm	rm [path]	Remove a file specified by [path]
rmdir	rmdir [path]	Remove a directory specified by [path]
run	run [binary.exe] [args]	Runs the binary specified by [binary.exe] with passed arguments (if any).
screenshot	screenshot	Get a screenshot of the current screen.
set_injection_technique	set_injection_technique [technique]	Set the injection technique used in post-ex jobs that require injection. Must be a technique listed in the output of list_injection_techniques.
shell	shell [command]	Run a shell command which will translate to a process being spawned with command line: cmd.exe /C [command]
shinject	shinject	Inject given shellcode into a specified pid. Modal popup.
sleep	sleep [seconds]	Set the callback interval of the agent in seconds.
socks	socks [action] [port]	Standup the socks server to proxy network traffic. Action must be start or stop. If start, require port.
spawn	spawn	Spawn a new callback.
spawnto_x64	spawnto_x64 [path]	Sets the process used in jobs requiring sacrificial processes to the specified [path].
spawnto_x86	spawnto_x86 [path]	Sets the process used in jobs requiring sacrificial processes to the specified [path].
steal_token	steal_token [pid]	Attempts to steal the process's primary token specified by [pid] and apply it to our own session.
unlink	unlink	Unlink a callback linked to via the link command.
unload_assembly	unload_assembly [Assembly.exe]	Remove an assembly from the list of loaded assemblies.
upload	upload	Upload a file to a remote path on the machine. Modal popup.
whoami	whoami	Report access token for local and remote operations.

Supported C2 Profiles

Currently, only two C2 profiles are available to use when creating a new Apollo agent: HTTP and SMB.

HTTP Profile

The HTTP profile calls back to the Mythic server over the basic, non-dynamic profile. When selecting options to be stamped into Apollo at compile time, all options are respected with the exception of those parameters relating to GET requests.

SMB (Currently Defunct)

The SMB profile only takes a pipe name on compilation. This pipe name can be randomly generated when creating the agent and can be generated based on a provided regex (e.g. [0-9a-z]{4}\-[0-9a-z]{8}\-[0-9a-z]{8}\-[0-9a-z]{4}). Currently there's an open issue with SMB messages, so SMB linking is non-functional.

SOCKSv5 Support

SOCKS support is built-in to the agent and dispatched through the SocksManager file. To start the socks server, issue socks start [port], and to stop it issue socks stop. You can view active SOCKS proxies by clicking on the dropdown of a callback and clicking "Socks Proxies."

Quality of Life Improvements

File Triage

The ls command reports back a wealth of information and allows operators to easily copy file paths and examine permissions of files, in addition to being able to sort and filter files. Clicking the icon under the ACLs column will show all the permissions of a file. Additionally, this hooks into Mythic's native file browser.

This shows typical ls output:

Clicking the ACL icon shows permissions:

Interfaces with Mythic's filebrowser and caches data server-side:

Process Listings

When issuing ps_full, additional details are retrieved such as:

• Company name of the process executable
• Description of the process executable
• Full path of the process
• Integrity level of the process
• Desktop session
• Process command line arguments

This process listing also interfaces with Mythic's builtin process browser, which allows you to see process trees more easily.

Clicking the informational icon next to the name displays a popup window with more information.

Assembly and PowerShell Script Caching

Apollo can cache one or more .NET assemblies as well as one or more PowerShell Scripts with no size limitation on imported files.

Dynamic Injection Techniques

The agent can change what code injection technique is in use by post-exploitation jobs that require injection through a suite of injection commands. Currently, injection techniques that are supported:

• CreateRemoteThread
• QueueUserAPC (Early Bird)

Token Manipulation Tracking

Apollo attempts to track the current access token in use by the agent through its own whoami command, which will track the impersonated user for local and remote operations.

Job Tracking

Agent jobs are tracked by job ID, by command, and by the arguments passed to the command so that you know what job correlates to what tasking.

Artifact Tracking

Commands that manipulate the disk, create new logons, or spawn new processes will document those changes in the Artifact Reporting page as shown below.

And more!

There's a number of niceities that come with pairing an agent to Mythic - too many to list in one README. Install the agent and see for yourself!