SprwLabs
Browser extensions are powerful tools that enhance the functionality of web browsers. Many potential threat actors leverage browser extensions as a way to track and monitor user’s activity. Browsers such as Island have started to tackle this space and give enterprises more control over the browser. Similar to many other use cases, SOAR can be leveraged to do a significant portion of their functionality. In this case, we can use SOAR to check browser extensions on endpoints for potentially malicious Chrome scripts. By implementing this proactive approach, organizations can enhance their security posture and protect against potential threats.
Steps to Check Malicious Chrome Scripts
Inventory: Create an inventory of all installed browser extensions across endpoints within the organization. This can be achieved by leveraging endpoint management tools or browser extension management solutions. Should there not be an accurate inventory of browser extensions or controls, DNS events to known malicious domains are often an indicator associated with malicious chrome extensions.
Threat Intelligence Integration: Integrate threat intelligence feeds into the SOAR platform to gather information about known malicious Chrome scripts. This will enable the platform to compare the installed extensions against the threat intelligence database. Without a reliable intelligence feed, analysts will have to maintain their own local database for checking these extensions when running these playbooks.
Automated Analysis: Develop automated analysis workflows within the SOAR platform to scan the installed extensions for potential malicious behavior. This can include analyzing the permissions requested by the extensions, reviewing the source code for suspicious patterns, and checking for any known vulnerabilities.
Alerting and Remediation: Configure the SOAR platform to generate alerts whenever a potentially malicious Chrome script is detected. Implement predefined response actions, such as disabling or removing the extension, to mitigate the risk. Often, the alert will come from a different source and lead into an investigation of chrome extensions.
Continuous Monitoring: Establish a continuous monitoring process to ensure that newly installed or updated extensions are also checked for potential malicious scripts. This can be achieved by scheduling regular scans and integrating the process into the organization's change management procedures.
Conclusion
By leveraging SOAR to check browser extensions for malicious Chrome scripts, organizations can proactively identify and mitigate potential security risks. This approach enhances the overall security posture and helps protect against emerging threats. Implementing a robust SOAR strategy is essential in today's rapidly evolving threat landscape.