Changes to Default Behavior in Cortex XDR Agent 7.7

Changes to default behavior in Cortex XDR agent 7.7 for Windows, macOS, and Linux endpoints.

Changes to Default Behavior in Cortex XDR Agent 7.7

The following topic describes changes to default behavior in Cortex XDR agent 7.7.
Feature
Change to Behavior
WildFire Queries
(
Windows
)
To support the Benign with Low Confidence verdict, a new field was added to the WildFire verdict local database. As a result, when you upgrade a Cortex XDR agent release prior to 7.6 to a Cortex XDR agent 7.5, the local WildFire cache is deleted, which could increase the number of initial WildFire queries on the endpoint after upgrade.
Retaining Cortex XDR extensions in macOS 11.3
(
Mac
)
To comply with the new operating system behavior starting with macOS 11.3, where uploading a configuration file in MDM automatically unloads from the endpoint any previously uploaded extensions by the same vendor, the Cortex XDR agent 7.6 and later retains its extensions on the endpoint in such cases.
Aggregated pop-up for Agent Uninstall
(
Mac
)
To improve user experience, now when you uninstall the Cortex XDR agent from endpoints running macOS 10.15.4 or later, you are prompted only once to enter your admin password.
Reverse Shell Protection
(
Linux
)
Starting with this release, if the Cortex XDR agent is operating in asynchronous mode then Reverse Shell Protection is not supported. For more information on supported kernel modules, see the Palo Alto Networks Compatibility Matrix.
New process XDR Health improves upgrade process of the Cortex XDR agent
(
Windows
)
To improve the upgrade process of the Cortex XDR agent, Cortex XDR now uses a new process called “XDR Health” to monitor the machine at startup time and initiate an upgrade rollback in case of a failed upgrade. This new service runs as the machine starts and checks if the installer has paused. If it has, the machine re-initiates the Windows installer to rollback to the status prior to the upgrade. As upgrades have multiple re-tries, the next try works on the agent of its original version with no interference. The service only runs at startup and remains in pause mode during other times. To ensure this service is not removed, a periodic task would re-instate the process in case it was removed.
Signed Cortex XDR Agent Installation for Linux
(
Linux
)
To better secure your Cortex XDR agent installations on Linux machines, installation packages are now signed by Palo Alto Networks. The installation package contains a new configuration file which includes the tenant ID and registration key. When installing the agent installation package, if signature-checking is configured, you will need to install a Cortex XDR public key.

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