Playbook Series: IOC Blocking

Today’s post continues an ongoing series on Playbooks; which Phantom uses to automate and orchestrate your security operations plan.

The spotlight Playbook for today covers IOC Blocking. This is a common use case as customers look to action their threat intel. In simple terms, it’s a way take all your lists of known ‘badness’ (i.e. IPs, URLs, hashes, email addresses, domains, etc.) and distribute them to blocking technologies for automation.

IOC Blocking

In this scenario, Phantom ingests STIX-based threat intel before taking the following actions:

  • Block the IP on Cisco ASA (or another product).
  • Block the URL on Palo Alto Networks NGFW (or another product).
  • Block the Application on Juniper (or another product).
  • Block a File Hash on the endpoint.
  • Block the Domain on OpenDNS (or another product).

With Phantom you could orchestrate all five blocking actions or some combination thereof.  You could even create decision logic that selects specific actions based on criteria you define in the Playbook.  Many of our users have described Playbooks like this example as a way to “close the loop” or “go full circle” on their threat intel.

If you didn’t already know it, Playbooks are Python scripts that Phantom interprets in order to execute your mission when you see something that you want to take action on. Playbooks hook into the Phantom platform and all of its capabilities in order to execute actions, ensuring a repeatable and auditable process around your security operations.  Sample community Playbooks can be customized at will and are synchronized via Git and published on our public Community GitHub repository.  You can read more about Phantom and Playbooks here.

The savings are substantial for an organization that sees even an average volume of events.   You can read more about the ROI of Automation & Orchestration here.

Interested in seeing how Phantom Playbooks can help your organization?  Get the free Phantom Community Edition, and attend one of our Tech Sessions to see Playbooks in action.

The use cases that can be addressed with Phantom Playbooks are nearly limitless.  Be sure to check the blog regularly for posts on other great Playbooks.  Interested in a Playbook we haven’t already covered?  Submit your request for future coverage.

CP Morey
VP, Products & Marketing

About Phantom:
Phantom automates and orchestrates key stages of security operations from prevention to triage and resolution; delivering dramatic increases in productivity and effectiveness. Ranging from simple automation to fully autonomous response, Phantom lets you choose the best balance that fits your organization’s needs while increasing security and accelerating security operations. Focused on closing the security gap by enabling enterprise security operations to be smarter, faster and stronger; Phantom provides the flexibility to connect in-house and third-party systems into one consolidated, integrated and extensible platform. Phantom was founded by enterprise security veterans Oliver Friedrichs and Sourabh Satish who have helped propel companies like Symantec, Sourcefire, Cisco and others to success. For more information visit: