PowerUp DLL Hijacking Tool Usage

The PowerUp tool, part of the PowerSploit framework, is commonly used for local privilege escalation via DLL hijacking. Attackers utilize the 'Write-HijackDll' function to inject malicious payloads into directory structures where vulnerable applications load arbitrary DLLs. In its default configuration, the tool generates a self-deleting batch file, typically named 'debug.bat', which contains the attacker's commands. This technique relies on the host application's search order to execute the malicious batch script upon the loading of the hijacked library. Defenders should monitor for the creation of batch files by PowerShell processes, as this is a primary indicator of the tool's execution stage during a privilege escalation attempt.

Impact

Successful exploitation of this technique allows an attacker to achieve privilege escalation, often moving from a standard user context to the context of the service or application triggering the DLL load. This can result in full system compromise, persistent backdoor access, and lateral movement within the affected network environment.

Recommendation

Deploy the provided Sigma rule to monitor for suspicious batch file creation events originating from PowerShell processes. Tune the rule by excluding known-good administrative deployment scripts or automation tools that legitimately generate batch files in temporary directories. Ensure File System Auditing (Event ID 4663) or Sysmon File Create (Event ID 11) logging is active across all endpoints to capture the creation of these artifacts.