Gpo applocker3/31/2023 ![]() exe files to run teams are allowed with the use of publisher rules. ![]() Do you want to run Teams? I guess you do. Of course, Powershell, Cmd, Regedit, and all other, not necessary executables for users, are excluded –> blocked. Looking at the Applocker Policy itself, you have to keep in mind that the DLL Policy is set to “Audit Only. Please note: the DLL Policy, can cause a Performance impact on your system. If you want to know more about the lolbas (lolbins) project, take a look at Let me explain why… When configuring your applocker XML, you need to make sure all locations that are “ writable” from the user context are excluded from the allowed paths! Looking a little bit closer to the policy itself, you will notice that I added exclusions to the default allow paths. The Applocker policy itself is hardened with the Lolbas Project in mind. It only requires two scripts a deployment script that makes the connection to Graph and another script that contains the JSON (config) itself If you don’t want to go through all the hassle and manually create the Applocker rules we could also automate the process. The men who stare at the AppLocker event log – Call4Cloud 2. I also wrote a blog on how to troubleshoot Applocker: If something is blocked you will be prompted with a nice error. The best practice is to use publisher rules. For example, you really want to make sure users are allowed to install/update Teams. You will need to add all the programs/DLL’s etc which are not on the allow list in Applocker. You will need to press the browse button and select the XML corresponding to the oma-uri/category. Vendor/MSFT/AppLocker/ApplicationLaunchRestrictions/StoreAppsGroup/StoreApps/Policy ![]() Vendor/MSFT/AppLocker/ApplicationLaunchRestrictions/DLLGroup/DLL/Policy Vendor/MSFT/AppLocker/ApplicationLaunchRestrictions/ScriptGroup/Script/Policy Vendor/MSFT/AppLocker/ApplicationLaunchRestrictions/MSIGroup/MSI/Policy Vendor/MSFT/AppLocker/ApplicationLaunchRestrictions/EXEGroup/EXE/Policy Here are the OMA-URI’s you will need for each category Now we have the XML’s we need, we can create a CSP for each category. You will need to make sure for each rule, you copy-paste everything like below. You will need to divide this XML into 5 parts, because if you combine them as 1 XML, Intune isn’t going to accept that XMLĪs an example, this is the one for EXE. Before we could copy/paste the XML information into Intune we need to export it. This is also your pitfall, in the default Applocker rules… PowerShell is allowed to be executed for all users. If you take a look at the Applocker Executable rules, you will notice it contains 3 rules to make sure all Windows and Program files folders and files are allowed for everyone and 1 rule to be sure all files and folders are allowed for building\administrators. You could do so, by right-clicking on the Applocker configuration and pressing properties.Īfter you have enabled the DLL collection, we need to make sure we have some default rules to start with, so right-click and press: “ Create default rules“. Before we proceed we need to enable the DLL Rule. When you’re looking at the categories, you will notice: DLL is missing. When we want to deploy an Applocker policy to our devices that are enrolled in Intune we need to start by opening the Group Policy Object Editor and open computer configuration/windows settings/ security settings/Applocker. What if I tell you, you can deploy a complete Applocker policy just within a few seconds? So in Part 2 of the blog, I will show you how you could automate this with Powershell. In one of my last blogs, I explained how to make sure access to Administrative Tools can be restricted using a GUI. 0000.0002, Direct hosting of SMB over TCP/IP, Disable LLMNR, Disable NetBIOS, Disable NetSession Enumeration, Disable PowerShell version 2, Disable SMB 1, Disable Windows Scripting Host (WSH), Disable WPAD, EMET, Group Policy, jscript, KB2871997, KB3177451, Lanman Authentication, LAPS, LLMNR, Microsoft Office Macro Security, Microsoft Office Macros, mimikatz, NetCease, NTLM session security, Office 2013 macro, Office 2016 macro security, Office OLE, OLE, packager.This (updated) blog will show you how you could manually configure Applocker and how to import the XML into a CSP in Intune. AppLocker, block macros, Block macros from running in Office files from the Internet, cmd, Control Local Administrator Account, Control Macros, DHCP option.The best way to create a secure Windows workstation is to download the Microsoft Security Compliance Manager … Post updated on March 8th, 2018 with recommended event IDs to audit. It seems like every week there’s some new method attackers are using to compromise a system and user credentials. Securing workstations against modern threats is challenging.
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