Number: AV19-100
Date: 15 May 2019
Microsoft recently published a list of applications that an actor could use to bypass or circumvent whitelisting policies, including Windows Defender Application Control. Application whitelisting is a common technique used to prevent execution of unknown or potentially malicious applications.
CCCS encourages users and administrators to review the Microsoft recommended block rules webpage and test and apply blocking rules for processes or applications that are not being used:
Note to Readers
The Canadian Centre for Cyber Security (Cyber Centre) operates as part of the Communications Security Establishment. We are Canada’s national authority on cyber security and we lead the government’s response to cyber security events. As Canada's national computer security incident response team, the Cyber Centre works in close collaboration with government departments, critical infrastructure, Canadian businesses and international partners to prepare for, respond to, mitigate, and recover from cyber events. We do this by providing authoritative advice and support, and coordinating information sharing and incident response. The Cyber Centre is outward-facing, welcoming partnerships that help build a stronger, more resilient cyber space in Canada.