Maturity level 1 (ML1): can be achieved by using Microsoft AppLocker. Achieving organizational maturity level requirements While application control is primarily designed to prevent the execution and spread of malicious code on a system, it can also prevent the installation and use of unapproved applications. When this security approach is implemented, it ensures only approved code such as executables, software libraries, scripts, installers and drivers is authorized to execute. Application controlĪpplication control is a security approach designed to protect against malicious code executing on systems. Due to its effectiveness, application control is one of the Essential Eight from the ACSC's Strategies to Mitigate Cyber Security Incidents. Why pursue the ACSC Essential Eight application control guidelines?Īpplication control is a security approach designed to protect against malicious code executing on systems. Remove-JCCommandTarget -CommandID $AppLockerCommandID -SystemID $agentconf.This article details methods for achieving the Australian Cyber Security Centre (ACSC) Essential Eight Maturity Model for Application Control, using Microsoft App Locker and Windows Defender Application Control. # Remove the hardened device from the Command itself # Execute the Command to harden the device # Apply AppLocker via JumpCloud CommandĪdd-JCCommandTarget -CommandID $AppLockerCommandID -SystemID $agentconf.systemKey It's the same approach: We will add a t rigger to the JumpCloud Command and make it consumable within the PowerShell Module. Just like in my previous article about Windows Hardening, you can apply this policy during the deployment before issuing the device to a user. In our example here, we will deny the execution of MS Teams ( because I prefer Slack) and MS Paint. Stop there and in a next step you can simply cleanup the XML-file by removing unnecessary lines ( "NotConfigured") which would lead to a failed application of the rules. You can follow the instructions in the article until " Creating the Policy". Generating the XML FileĪs this is well documented here, I won't repeat the whole content. Simplify creating and managing AppLocker rules by using Windows PowerShell.įirst you will need to create your Package App Rule (as an example) to come up with an XML-file containing the restrictions which we will apply later via a JumpCloud Commands using PowerShell and carrying the XML as an additional payload.Create rules on a staging server, test them, then export them to your production environment and import them into a Group Policy Object.Use audit-only mode to deploy the policy and understand its impact before enforcing it.For example, you can create a rule that allows all users to run all Windows binaries, except the Registry Editor (regedit.exe). Assign a rule to a security group or an individual user.You can also create rules based on the file path and hash. Define rules based on file attributes that persist across app updates, such as the publisher name (derived from the digital signature), product name, file name, and file version.
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