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Sophos Extended Detection and Response XDR Integration Zero Trust Alerting

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Overview

Customers using Sophos Extended Detection and Response  XDR can now leverage a native integration that ingests root cause Cyberstorage events to show as Security events .

  1. NOTE:  This documentation is provided "as is" without support for 3rd party software.  The level of support for this integration guide is best effort without any SLA on response time.  No 3rd party product support can be provided by Superna directly.  3rd party components require support contracts

Limitations

  1. None

Solution Overview

Superna Defender Zero Trust API receives webhook alerts from Security Edition and maps all relevant data fields into the  Sophos XDR with a json custom parsing configuration.    


Video Demo


Advanced Zero Trust Capabilities

  1. Webhook to native Sophos Extended Detection and Response SIEM ingestion API and log parsing
  2. Superna Security Edition host Containment API integration with Sophos Extended Detection and Response

What is Sophos Extended Detection and Response?

A cybersecurity platform that correlates security data from various sources like endpoints, servers, firewalls, and cloud environments to provide a holistic view for detecting, investigating, and responding to threats


Integration Architecture



Solution Configuration in Sophos Extended Detection and Response and Data Security Edition Zero Trust

Prerequisites

  1. Installed Security Edition
  2. Eyeglass OS appliance version 15.5
    1. cat /etc/os-release
  3. License key for the Zero Trust API 
  4. Sophos Extended Detection and Response HTTP endpoint data source


Configuration in Sophos Extended Detection and Response

  1. Create an http ingest cloud endpoint by following the steps here (https://docs.taegis.secureworks.com/integration/connectCloud/http_ingest/)
    2. Record the URL and API key for use later

  2. The Taegis platform from Sophos has a Superna parser builtin to the platform that will recognize the Superna payload and automatically parse the payload and maps the fields. 
  3. Done.


Configuration Steps on Eyeglass Virtual Machine

High Level steps

  1. Create python location to run the application on the Eyeglass vm
  2. Create python main application script
  3. Create linux systemd service and set to auto start
  4. Create Zero Trust configuration in Defender
  5. Update the main script to customize with Sophos Extended Detection and Response  python code
  6. Test the script is running as a service
  7. Create a test event in Defender to validate the alerts appear as indexed parsed events in Sophos Extended Detection and Response

Configuration Step by Step

Configure the Service start and python integration files
  1. Login to eyeglass vm using ssh as the admin user to create zero trust application
    1. sudo -s 
    2. mkdir -p /opt/superna/cgi-bin
    3. touch /opt/superna/cgi-bin/sophos.py
    4. touch /opt/superna/cgi-bin/sophos.sh 
    5. chown sca:users  /opt/superna/cgi-bin/sophos.py
    6. chmod +x  /opt/superna/cgi-bin/sophos.py 
    7. chmod +x /opt/superna/cgi-bin/sophos.sh 
  2. Create systemd configuration
    1. nano  /etc/systemd/system/sophos.service
    2. Copy the values below and Paste these contents into the file opened in nano editor in the step above
    3. Save the file 
      1. press control+x
      2. Answer yes to save and exit
  3. Restart systemd
    1. systemctl daemon-reload
  4. Set to enabled
    1. systemctl enable sophos
  5. Create Sophos.sh service script
    1. Copy the values below
    2. nano /opt/superna/cgi-bin/sophos.sh
    3. paste the script values below into the nano editor
    4. Save the file
      1. press control+x
      2. Answer yes to save and exit the editor
  6. Once the script is created below,  do not start the service at this step.
  7. Done

### Service definition text to copy into /etc/systemd/system/sophos.service. ###
[Unit]
Description=Webhook listener for Zero Trust api translations and integrations
After=network.target

[Service]
User=sca
Group=users
WorkingDirectory=/opt/superna/cgi-bin
Environment="PATH=/opt/.pyenv/shims:/usr/bin:/usr/local/bin"

ExecStart=/opt/superna/cgi-bin/sophos.sh

[Install]
WantedBy=multi-user.target

### service launch script /opt/superna/cgi-bin/sophos.sh ### 
#!/bin/bash
export PATH="/opt/.pyenv/bin:$PATH"
/opt/.pyenv/shims/python3 sophos.py


Configure the python packages and customize the Sophos Extended Detection and Response integration python code

  1. Now install required python packages for the SCA users that will run the service.  NOTE this is the same user that runs the main eyeglass application code.
    1. su - sca 
    2. pip3 install pprint flask boto3 requests logging socket json 
    3. exit 
    4. NOTE: you must type exit to ensure you are the root user for the remaining steps.  Type whoami to make sure you are the root user.
  2. Customize the application code by downloading the python code from this link to download
    1. Open the python template file in a text editor. NOTE: make sure to only replace the values and do not delete any of the commas
    2. Locate this section in the file # Define the endpoint and API token as variables to add your Sophos Extended Detection and Response api token and endpoint for API calls . 
      1.  Add the API URL and API token into this section.
      2.  
        Secureworks_URL = "https://xxxxxxx"
        Secureworks_key = "yyyyyy"
  1. nano /opt/superna/cgi-bin/sophos.py
  2. Open the file locally in Windows OS notepad and use control-A or select all the text in the python template
  3. Paste the clipboard into the ssh terminal session with the open nano editor file
  4. save the file
    1. press control+x
    2. Answer yes to save and exit the nano editor 
  5. Start the service and verify it is running
    1. systemctl start sophos
    2. systemctl status -l sophos 
    3. Verify the service is started successfully and returns "active and running".
  6. If the service does not start do not proceed and double check the steps above are completed. 

Configure Defender Zero Trust Webhooks

  1. The next step creates an Zero Trust Webhook URL.    
    1. Configure Zero Trust endpoint in Ransomware Defender Zero Trust tab.
      1. Recommended Configuration: Only Critical and Major events and only the webhooks that set lockout or delayed lockout.   Customers can customize based on specific requirements. The goal is to send findings versus a list of alarms that do not pinpoint a security incident.

      3. The endpoint url above will use localhost and will send Webhooks to the application service listening on port 5000. URL to use in the configuration
        1. http://localhost:5000/webhook 
        2. Add the Content-Type header with value of application/json as shown above to complete the webhook configuration.
        3. Click save to commit the configuration.
        4. Click save on the main Webhook configuration page
  2. Test the configuration is working following the next section


How the Integration works Sophos Extended Detection and Response 

  1.  After the integration is completed security events will be sent to the HTTP endpoint and parsed by the parser mapping key fields to the thirdparty schema.   The events will be found by searching with the following syntax.
    1. Syntax of the search for the last 7 days:  FROM thirdparty WHERE sensor_id='Superna.io' EARLIEST=-7d
      1.  
    2. See the steps below to create test events.  
  2. Now you can configure rules to create investigations based on the sensor ID.  See the section below.

How to test the Integration with Sophos Extended Detection and Response

  1. To test the integration follow these steps
  2. Prerequisites In Sophos Extended Detection and Response and Eyeglass: 
    1. download this curl command template and open with a text editor and locate the ip address of eyeglass at the very end of text and replace the ip address with the IP address of your eyeglass vm.
      1. Also edit the client ip section of the curl command by searching the text clientIPs":["172.31.1.45"] and replace only the ip address with the IP of the test machine running the Sophos Extended Detection and Response agent. 
      2. Edit the section below and add the client_id and client_secret with values from the Sophos Extended Detection and Response Console.
      3. # Your Sophos Extended Detection and Response API credentials
        Secureworks_URL = 'xxxxx'
        Secureworks_key = 'yyyyyy'
      4. Update the base url if needed.
        1. # The API base URL for Sophos Extended Detection and Response
          base_url = "https://api.us-2.Sophos Extended Detection and Response.com"
      5. This will now simulate a zero trust alert on this host when the curl command sends the webhook payload to the integration python code to process. 
    2. Copy all the text in the text editor
    3. ssh to the eyeglass vm as the admin user
    4. Paste the entire cli command text to the ssh prompt to send sample data to the running Zero Trust application.  This will send test data directly to the application to be processed and sent to Sophos Extended Detection and Response Integration service that is running on the Eyeglass VM.
    5. The output of a successfully processed webhook test will return this text in the ssh terminal
      1. done sending event to sophos and check for http 200 and success count in response
    6. How to review the process logs from the web application
      1. sudo -s 
      2. journalctl -f -u sophos 
      3. This allows you to view the logs generated by the application.
      4. To log to a file and review with nano showing only the most recent 250 lines.
      5. journalctl -f -n 250 -u sophos  > /tmp/ztwebhook.log
      6. nano /tmp/sophos.log
      7. In the log below the response code from the Sophos Extended Detection and Response api call should show http 200 status code and success Count 1 to indicate the Finding was successfully created.
      8.   You can also view sophos.log for specific error messages.
    7. Login to the Sophos Extended Detection and Response and verify new incident is raised.
  3. Done

Sophos Extended Detection and Response SecOps administrators Integration Experience 


Overview: This covers some functions of the Sophos Extended Detection and Response solution that allows for Incident Response based on 3rd party event parsing.


  1. The event schema is mapping allowing for seamless Investigations with all nessessary evenidence populationed.  From the advanced search interface an log entry can be selected and select action to create an investigation.
    1.  
  2. Click on the Investigations tab or view investigation after it is submitted.
    1.  
    2. Click on the Evidence Tab
      1. The key host, user and IP information is populated to allow further investigation with other tools like Vulnerablity Scanners or Endpoint protection security tools.  The impacted user is listed for automated actions to disable the account.
      2.  
    3. Click on the Events tab to review details of the incoming event.
      1.  
    4. To investigate the details of the Threat Intelligence copy and paste the TI url into a new tab and login to Data Security Edition to view the details of the incident including snapshots the list of files, SMB/NFS shares.
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