Episode 36 — Control Application Execution: Allowlisting, Script Controls, and Common Bypass Patterns

This episode explains application execution control as a direct defense against malware and living-off-the-land abuse, and it targets GSEC scenarios where attackers succeed because “anything can run.” You’ll define allowlisting as permitting only approved executables, libraries, or publishers, then connect it to practical realities like software updates, admin tooling, and the operational friction of approval workflows. We’ll also cover script controls, since many attacks rely on PowerShell, Python, macro-enabled documents, and browser-based execution paths that never look like traditional malware. Scenarios include a user running a signed but abused utility, a script launched from a temporary directory, and a bypass attempt using renamed binaries, trusted locations, or legitimate installers. Best practices include tightening execution from user-writable paths, enforcing signing where feasible, restricting macro and script execution policies, and monitoring for policy violations that indicate attempted abuse. Troubleshooting emphasizes balancing business needs with security, validating enforcement mode versus audit mode, and ensuring exceptions do not quietly become universal bypasses. Produced by BareMetalCyber.com, where you’ll find more cyber audio courses, books, and information to strengthen your educational path. Also, if you want to stay up to date with the latest news, visit DailyCyber.News for a newsletter you can use, and a daily podcast you can commute with.