A frequent technical issue reported in the CyberArk Community involves the script failing when using certain parameters or when the XML structure is malformed. If the script fails to run, it is often due to a syntax error in the XML (like a missing closing tag) or a path that contains variables the script cannot resolve. Best Practices
In privileged access management architectures, the CyberArk Privileged Session Manager (PSM) acts as a secure jump server that isolates target systems from end-user workstations. To prevent malicious software execution and lateral movement within these isolated sessions, CyberArk leverages Microsoft AppLocker. The core of this mechanism is the file psmconfigureapplocker.xml
: Always create a copy of your working XML before making changes. psmconfigureapplocker.xml
Start by defining your application control policies. Determine which applications you want to allow or block. This could include specifying rules for executable files, DLLs, scripts, and other types of software.
AppLocker policies exported from Local Security Policy or Get-AppLockerPolicy -Export can be named arbitrarily; this could be a renamed export. A frequent technical issue reported in the CyberArk
It seems you’re referencing a file named psmconfigureapplocker.xml . This is not a standard Microsoft or widely known filename.
In the ecosystem of CyberArk Privileged Access Manager (PAM), security is maintained through layers of "hardening." One of the most critical components of this process is the file. This configuration file acts as the blueprint for the AppLocker policy on a Privileged Session Manager (PSM) server, ensuring that only authorized applications can execute during a privileged session. What is PSMConfigureAppLocker.xml? To prevent malicious software execution and lateral movement
<FileRule Action="Allow" Type="Publisher" PublisherName="O=MICROSOFT CORPORATION, L=REDMOND, S=WASHINGTON, C=US" ProductName="MICROSOFT® WINDOWS® OPERATING SYSTEM" BinaryName="MSTSC.EXE" />
Configuring AppLocker using the PSMConfigureAppLocker.xml file involves several steps. Here's a general guide on how to create and deploy an AppLocker configuration:
If this is from a specific software vendor (CyberArk, BeyondTrust, etc.), check their documentation. If you can share more context (source folder, surrounding scripts, software suite), I can give a more precise answer.
Before deploying any AppLocker policy, test it thoroughly in a controlled environment to ensure it does not inadvertently block necessary applications.