Current ThreatQ Version Filter
 

IMAP Connector

The web format of this guide reflects the most current release.  Guides for older iterations are available in PDF format.  

Integration Details

ThreatQuotient provides the following details for this integration:

Introduction

The IMAP Connector for ThreatQ enables analysts to use an email inbox for spearphish submissions as well as intelligence sharing. Attachments and forwarded spearphishing emails will automatically be parsed, with the indicators and metadata ingested into ThreatQ.

Prerequisites

Review the following requirements before attempting to install the connector.  

Time Zone

The time zone steps are for ThreatQ v5 only.  ThreatQ v6 users should skip these steps.  

You should ensure all ThreatQ devices are set to the correct time, time zone, and date (UTC is recommended), and using a clock source available to all.

To identify which time zone is closest to your present location, use the timedatectl command with the list-timezones command line option.

For example, enter the following command to list all available time zones in Europe:

timedatectl list-timezones | grep Europe
Europe/Amsterdam
Europe/Athens
Europe/Belgrade
Europe/Berlin

Enter the following command, as root, to change the time zone to UTC:

timedatectl set-timezone UTC

Integration Dependencies

The integration must be installed in a python 3.6 environment.

The following is a list of required dependencies for the integration.  These dependencies are downloaded and installed during the installation process.  If you are an Air Gapped Data Sync (AGDS) user, or run an instance that cannot connect to network services outside of your infrastructure, you will need to download and install these dependencies separately as the integration will not be able to download them during the install process.

Items listed in bold are pinned to a specific version.  In these cases, you should download the version specified to ensure proper function of the integration.

Dependency Version Notes
threatqsdk >=1.8.6 N/A
threatqcc >=1.4.2 N/A
PySocks >=1.6.7 N/A
python-dateutil N/A N/A

Installation

Upgrading Users - Review the Change Log for updates to configuration parameters before updating.  If there are changes to the configuration file (new/removed parameters), you must first delete the previous version's configuration file before proceeding with the install steps listed below.  Failure to delete the previous configuration file will result in the connector failing.

  1. Download the connector integration file from the ThreatQ Marketplace.  
  2. Transfer the connector whl file to the /tmp/ directory on your instance.
  3. SSH into your instance.
  4. Move the connector whl file from its /tmp/ location to the following directory: /opt/tqvenv
  5. Navigate to the custom connector container:
    kubectl exec -n threatq -it deployments/custom-connectors -- /bin/bash

  6. Create your python 3 virtual environment:
    python3.6 -m venv /opt/tqvenv/<environment_name>

  7. Active the new environment:
    source /opt/tqvenv/<environment_name>/bin/activate

  8. Run the pip upgrade command:
    pip install --upgrade pip

  9. Install the required dependencies:
    pip install setuptools==59.6.0 threatqsdk threatqcc python-dateutil

  10. Install the connector:
    pip install /opt/tqvenv/tq_conn_imap-<version>-py3-none-any.whl

  11. Perform an initial run of the connector:
    /opt/tqvenv/<environment_name>/bin/tq-conn-imap --cron="0 */2 * * *"

    The --cron argument above is used to generate a cron job for the connector.  After running the command above, the cronjob will be created under the /etc/cron.d/ directory.  This entry will initially be commented out upon creation - see the CRON chapter for more details.  

  12. Enter the following parameters when prompted:
    Parameter Description
    ThreatQ Host Leave this field blank as it will be set dynamically.  
    ThreatQ Client ID This is the OAuth id that can be found at Settings Gear → User Management → API details within the user’s details. 
    ThreatQ Username This is the Email Address of the user in the ThreatQ System for integrations. 
    ThreatQ Password The password for the above ThreatQ account. 
    Status This is the default status for objects that are created by this Integration. 

    Example Output

    /opt/tqvenv/<environment_name>/bin/tq-conn-imap --cron="0 */2 * * *"
    ThreatQ Host:  
    ThreatQ Client ID: <ClientID> 
    ThreatQ Username: <EMAIL ADDRESS> 
    ThreatQ Password: <PASSWORD>
    Status: Review 
    Connector configured. Set information in UI

You will still need to configure and then enable the connector

  1. Navigate to the ThreatQ Marketplace and download the .whl file for the integration.
  2. Create the following directory:
    mkdir /opt/tqvenv/

  3. Install python 3.6:
    sudo yum install -y python36 python36-libs python36-devel python36-pip

  4. Create a virtual environment:
    python3.6 -m venv /opt/tqvenv/<environment_name>

  5. Activate the virtual environment:
    source /opt/tqvenv/<environment_name>/bin/activate

  6. Run the pip upgrade command:
    pip install --upgrade pip

  7. Install the required dependencies: 
    pip install threatqsdk threatqcc setuptools==59.6.0 python-dateutil

  8. Transfer the whl file to the /tmp directory on your ThreatQ instance.  
  9. Install the connector on your ThreatQ instance:
    pip install /tmp/tq_conn_imap-<version>-py3-none-any.whl 

    A driver called tq-conn-imap will be installed.   After installing, a script stub will appear in /opt/tqvenv/<environment_name>/bin/tq-conn-imap.

  10. Once the application has been installed, a directory structure must be created for all configuration, logs and files, using the mkdir -p command. Use the commands below to create the required directories:
    mkdir -p /etc/tq_labs/ mkdir -p /var/log/tq_labs/

  11. Perform an initial run using the following command:
    /opt/tqvenv/<environment_name>/bin/tq-conn-imap -ll /var/log/tq_labs/ -c /etc/tq_labs/ -v3

  12. Enter the following parameters when prompted:
    Parameter Description
    ThreatQ Host This is the host of the ThreatQ instance, either the IP Address or Hostname as resolvable by ThreatQ. 
    ThreatQ Client ID This is the OAuth id that can be found at Settings Gear → User Management → API details within the user’s details. 
    ThreatQ Username This is the Email Address of the user in the ThreatQ System for integrations. 
    ThreatQ Password The password for the above ThreatQ account. 
    Status This is the default status for objects that are created by this Integration. 

    Example Output

    /opt/tqvenv/<environment_name>/bin/tq-conn-imap -ll /var/log/tq_labs/ -c /etc/tq_labs/ -v3
    ThreatQ Host: <ThreatQ Host IP or Hostname> 
    ThreatQ Client ID: <ClientID> 
    ThreatQ Username: <EMAIL ADDRESS> 
    ThreatQ Password: <PASSWORD> 
    Status: Review
    Connector configured. Set information in UI

You will still need to configure and then enable the connector.

Configuration

ThreatQuotient does not issue API keys for third-party vendors. Contact the specific vendor to obtain API keys and other integration-related credentials.

To configure the integration:

  1. Navigate to your integrations management page in ThreatQ.
  2. Select the Labs option from the Category dropdown (optional).
  3. Click on the integration entry to open its details page.
  4. Enter the following parameters under the Configuration tab:
    Parameter Description
    IMAP Server The IMAP server associated with the email provider you want to connect with.
    IMAP Username The username/email to log into.
    IMAP Password The password associated with your username/email.
    Proxy Address Optional - Socks proxy address used to connect to the IMAP server.

    This cannot be a HTTP/HTTPS proxy, which is why the proxy settings within ThreatQ will not be used.

    Proxy Port Optional - The port associated with the proxy address field.
    Proxy Type Optional - The type of proxy that will be used. Options include:
    • socks4 
    • socks5
    Treat forwarded emails as spearfish emails Specify if forwarded emails should be treated as spearfish emails.
  5. Review any additional settings, make any changes if needed, and click on Save.
  6. Click on the toggle switch, located above the Additional Information section, to enable it.

Usage

Use the following command to execute the driver:

/opt/tqvenv/<environment_name>/bin/tq-conn-imap

/opt/tqvenv/<environment_name>/bin/tq-conn-imap -v3 -ll /var/log/tq_labs/ -c /etc/tq_labs/

Command Line Arguments

This connector supports the following custom command line arguments:

Argument Description
-h, --help  Shows this help message and exits. 
-ll LOGLOCATION, --loglocation LOGLOCATION  Sets the logging location for the connector. The location should exist and be writable by the current. 
-c CONFIG, --config CONFIG This is the location of the configuration file for the connector. This location must be readable and writable by the current user. If no config file path is given, the current directory will be used. This file is also where some information from each run of the connector may be put (last run time, private oauth, etc.)
-v {1,2,3}, --verbosity {1,2,3}  This is the logging verbosity level where 3 means everything. 
-n, --name Name of the connector.  This allows you to configure multiple Intelligence Mailbox connector instances on the same TQ instance.
-ds, --disable_ssl Disables SSL verification.
-f, --files Directory where downloaded files are kept.
--cron ThreatQ v6 Only - creates a CRON entry for the connector based on a pre-loaded ThreatQ template.  See the CRON section for more details. 

Accessing Connector Logs

ThreatQ version 6 aggregates the logs for all custom connectors to its output container.  You can access the container's log using the following command:

kubectl logs -n threatq deployments/custom-connectors

The connector log directory was created in 10 of the installation process and is identified using the -ll argument flag when executing the driver.

Accessing Connector Configuration

The custom connector configuration file can be found in the following directory: /etc/tq_labs/.  

The custom connector configuration file was created in step 10 of the install process and identified using the -c argument flag when executing the driver. 

CRON

The addition of the --cron argument in the initial run of connector, performed during the install process, resulted in the creation of a cron job file for the connector in the following directory: /etc/cron.d/.  The contents of the file will resemble the following structure:

#{schedule} root /bin/bash -c "source /etc/env-vars.sh; {venv_path}/bin/{executable} --config=/etc/tq_labs > /proc/1/fd/1 2>/proc/1/fd/2" 

The {schedule} will be replaced with the cron settings you entered with the --cron flag and the {executable} will be replaced for with the connector's driver command.

You will also see a # at the beginning of the file.  This comments out the job.  This allows you to configure the custom connector in the ThreatQ UI first.  After you have configured the connector in ThreatQ, you can remove the # from the file content's in order to activate the cron job.

To summarize this process:

  1. Install the connector and perform an initial run using the --cron argument to create the cron job.
  2. Complete the connector's configuration settings in the ThreatQ UI.
  3. Access the connector's cron file in the /etc/cron.d/ directory and remove the # from the beginning of the file.  

Automatic CRON configuration has been removed from this script. To run this script on a recurring basis, use CRON or some other jobs scheduler. The argument in the CRON script must specify the config and log locations.

Add an entry to your Linux crontab to execute the connector at a recurring interval. Depending on how quickly you need updates, this can be run multiple times a day (no more than once an hour) or a few times a week.

In the example below, the command will execute the connector every two hours.

  1. Log into your ThreatQ host via a CLI terminal session.
  2. Enter the following command:
    crontab -e

    This will enable the editing of the crontab, using vi. Depending on how often you wish the cronjob to run, you will need to adjust the time to suit the environment.

  3. Enter the commands below:

    Every 2 Hours Example

    0 */2 * * * /opt/tqvenv/<environment_name>/bin/tq-conn-imap -c /etc/tq_labs/ -ll /var/log/tq_labs/ -v3  

  4. Save and exit CRON.

Average Connector Run

Object counts and connector runtime are supplied as generalities only - objects returned by a provider can differ based on credential configurations and Feed runtime may vary based on system resources and load.

Metric Result
Run Time 7 seconds
Indicators 15
Events 1
Event Attributes 23
File 1

Known Issues / Limitations

  • Running the connector will look for all unread emails in the inbox folder. The unread emails will then be marked as read.
  • The connector will read the entire email including the attachments. If an attachment is present, it will upload the attachment to ThreatQ as a File. The connector will also attempt to parse the file and the email body looking for indicators. If indicators are found, they will be related to the email's attachment.

Change Log

  • Version 4.1.0 rev-a
    • Guide Update - added ThreatQ v6 documentation.  
  • Version 4.1.0
    • Added new configuration option - Treat forwarded emails as spearfish emails, which allows you to specify if forwarded emails should be treated as spearfish emails.
    • Deprecated Python2 version. 
  • Version 4.0.1
    • Fixed an ascii error in python2.  
  • Version 4.0.0
    • Added python 3 support.  
    • Fixed a bug regarding emails and attachments.    
  • Version 3.2.0
    • Fixed a bug with decoding certain attachments that contained ascii characters.
    • Forwarded messages will now be treated as a spearphish to utilize ThreatQ's spearphish parser.  eml files that are attached to emails will still be parsed using the ThreatQ spearphish parser

PDF Guides

Document ThreatQ Version
IMAP Connector Guide v4.1.0 4.56.0 or Greater
IMAP Connector Guide v4.0.1 4.0.0 or Greater
IMAP Connector Guide v4.0.0 4.0.0 or Greater
IMAP Connector Guide v3.1.0 3.6.0 or Greater
IMAP Connector Guide v1.1.0 3.6.0 or Greater
IMAP Connector Guide v1.0.0 3.6.0 or Greater