This article explores the critical importance of PowerShell and script logging as a foundation for modern threat detection. While process creation events identify that PowerShell was executed, they often fail to capture the actual intent of obfuscated or memory-only payloads. By enabling comprehensive logging, organizations can gain visibility into the second-highest coverage data source in the MITRE ATT&CK framework, addressing over 200 techniques used by attackers.
The author details three primary logging pillars: Module Logging (Event ID 4103), Script Block Logging (Event ID 4104), and Transcription. Script Block Logging is highlighted as the most valuable tool, as it captures the de-obfuscated code at the time of execution. The guide provides specific implementation steps via Group Policy, Registry, and configuration files for both Windows PowerShell 5.1 and PowerShell 7, ensuring cross-version visibility.
Beyond implementation, the post covers practical strategies for managing log volume and correlating events with Logon IDs to trace activity back to specific users or source IPs. It concludes with actionable detection patterns for common attack behaviors such as download cradles, credential dumping, and reconnaissance, while acknowledging that tools like Sysmon are still required to fill remaining visibility gaps.
Top comments (0)