MITRE ATT&CK CoA - T1071 - Application Layer Protocol

This playbook Remediates the Application Layer Protocol technique using intelligence-driven Courses of Action (COA) defined by Palo Alto Networks Unit 42 team. ***Disclaimer: This playbook does not simulate an attack using the specified technique, but follows the steps to remediation as defined by Palo Alto Networks Unit 42 team’s Actionable Threat Objects and Mitigations (ATOMs). Techniques Handled: - T1071: Application Layer Protocol Kill Chain phases: - Command And Control MITRE ATT&CK Description: Adversaries may communicate using application layer protocols to avoid detection/network filtering by blending in with existing traffic. Commands to the remote system, and often the results of those commands, will be embedded within the protocol traffic between the client and server. Adversaries may utilize many different protocols, including those used for web browsing, transferring files, electronic mail, or DNS. For connections that occur internally within an enclave (such as those between a proxy or pivot node and other nodes), commonly used protocols are SMB, SSH, or RDP. Possible playbook uses: - The playbook can be used independently to handle and remediate the specific technique. - The playbook can be used as a part of the “Courses of Action - Defense Evasion” playbook to remediate techniques based on the kill chain phase. - The playbook can be used as a part of the “MITRE ATT&CK - Courses of Action” playbook, which can be triggered by different sources and accepts the technique MITRE ATT&CK ID as an input.

MITRE ATT&CK - Courses of Action · 12 tasks · 3 inputs · 1 output

Inputs

  • pre_post — Rules location. Can be 'pre-rulebase' or 'post-rulebase'. Mandatory for Panorama instances.
  • device-group — The device group for which to return addresses (Panorama instances).
  • tag — Tag for which to filter the rules.

Outputs

  • Handled.Techniques — The techniques handled in this playbook

Flowchart

yes Start Start Block all unknown and unauthorized applications Block all unknown and una... Deploy Anti-Spyware profiles with block action Deploy Anti-Spyware profi... Cortex XDR monitors for behavioral events indicative of command and control activity Cortex XDR monitors for b... Cortex XDR monitors for behavioral events indicative of command and control activity Cortex XDR monitors for b... Done Done PAN-OS - Block all unknown and unauthorized applications - PAN-OS - Block all unknown and unauthorized applications PAN-OS - Block all unknow... PAN-OS - Block all unknown an... Set technique handled Set technique handled PAN-OS - Enforce Anti-Spyware Best Practices Profile - PAN-OS - Enforce Anti-Spyware Best Practices Profile PAN-OS - Enforce Anti-Spy... PAN-OS - Enforce Anti-Spyware... Is Cortex XDR integration Enabled? Is Cortex XDR integration... Manual - Enable Cortex XDR integration Manual - Enable Cortex XD... Set grid field Set grid field