Create a rule that uses a file hash condition.Create a rule that uses a path condition.Create a rule that uses a publisher condition.For information about creating the default rules for the Windows operating system, see Create AppLocker default rules.įor information about performing this task, see: These rules are intended to help ensure that the files that are required for Windows to operate properly are allowed in an AppLocker rule collection. Note: AppLocker includes default rules for each rule collection. Creating rules individually might be best when you're targeting a few applications within a business group. You can create rules and set the mode to Audit only for each installed app, test and update each rule as necessary, and then deploy the policies. Run the Automatically Generate Rules wizard.Configure the AppLocker reference device.For info about performing this task, see the following topics: Creating most of the rules for all the installed apps gives you a starting point to build and test your policies. You can use a reference device to automatically create a set of default rules for each of the installed apps, test and modify each rule as necessary, and deploy the policies. For info about this planning document and other planning activities, see AppLocker Design Guide. Creating rules that are derived from your planning document can help you avoid unintended results. With AppLocker, you can generate rules automatically or create rules individually. Depending on your IT environment and the business group that requires application control policies, setting these access rules for each application can be time-consuming and prone to error. Creating AppLocker rulesĪppLocker rules apply to the targeted app, and they're the components that make up the AppLocker policy. This topic for the IT professional describes what you need to know about AppLocker rules and the methods that you can to create rules. Learn more about the Windows Defender Application Control feature availability. See how AppLocker can read it’s Publisher information, but for “ciscowebexstart.Some capabilities of Windows Defender Application Control are only available on specific Windows versions. I will do it again, this time comparing with “webex.exe” that also resides in that directory. It definitively illustrates that “ciscowebexstart.exe” CANNOT BE WHITELISTED WITH A PUBLISHER RULE because as far as AppLocker is concerned it has no certificate. Sam, how about you try the same PS command that I did. They must be assuming an administrative install that goes in Program Files. Regarding the response to your support call. But, something changed close to a year ago when I started this post because it used to work fine. So, we have a workaround and are not in need of an immediate fix. But they don’t always know or remember that part and end up calling the Help Desk. So, the user has to click the “join meeting in browser” option instead.Ciscowebexstart.exe gets blocked by AppLocker because it’s digital signature IS NOT COMPATIBLE with AppLocker, not because it’s lacking the appropriate whitelist rule.When a user receives an email about joining a meeting they click the link, it opens their web browser and downloads webex to %LOCALAPPDATA%\WebEx.Instead, we prefer to let it run on as needed basis, temporary application in AppData. We only have a small amount of users that use Webex so we do not deploy it to all workstations.I will try to explain our situation more specifically. I am not trying to fix something on my end. That seems like the closest possibility I've come across so far anyway. When I look at the signatures of other exe's that are whitelisted successfully, I see either a SHA1 certificate only, or a SHA256 in addition to SHA1. I believe it might be related to the type of digital signature that is being used, like what is described in the Technet post linked below. This is the only executable I have had this problem with.
But for whatever reason it is not respected whenever webex.exe is run.
So, the PowerShell cmdlet reads it accurately, and I am able to create the whitelist rule. Publisher : O=CISCO WEBEX LLC, L=SAN JOSE, S=CALIFORNIA, C=US\CISCO WEBEX MEETING\CISCOWEBEXSTART.EXE,100.328 This is what Get-AppLockerFileInformation returns for a recent file: I have whitelisted webex.exe with a publisher rule, but it is still getting blocked. We enforce AppLocker policy in our organization.
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