T1547.010

Port Monitors

SUB-TECHNIQUE Persistence Privilege Escalation

Description

Adversaries may use port monitors to run an adversary supplied DLL during system boot for persistence or privilege escalation. A port monitor can be set through the <code>AddMonitor</code> API call to set a DLL to be loaded at startup.(Citation: AddMonitor) This DLL can be located in <code>C:\Windows\System32</code> and will be loaded and run by the print spooler service, `spoolsv.exe`, under SYSTEM level permissions on boot.(Citation: Bloxham)Alternatively, an arbitrary DLL can be loaded if permissions allow writing a fully-qualified pathname for that DLL to the `Driver` value of an existing or new arbitrarily named subkey of <code>HKLM\SYSTEM\CurrentControlSet\Control\Print\Monitors</code>. The Registry key contains entries for the following:* Local Port * Standard TCP/IP Port * USB Monitor * WSD Port

Platforms

Windows

Look up any technique

Use our free MITRE ATT&CK lookup tool, or browse the full ATT&CK matrix.

Source: MITRE ATT&CK Enterprise matrix. View on attack.mitre.org →