MITRE ATT&CK sub-technique
T1547.010 — Port Monitors
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T1547.010 (Port Monitors) is a MITRE ATT&CK sub-technique tracked in WhisperGraph, serving the Persistence, Privilege Escalation tactics.
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
Tactics
Related techniques
Parent technique: T1547 · Boot or Logon Autostart Execution
Threat actors observed using this technique
No threat actor is recorded using T1547.010 in WhisperGraph.
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Related pages
Pivot from T1547.010 into its tactic, related techniques and the actors that use it.
Queries
Resolves the segment to this technique or tactic.
MATCH (t:ATTACK_PATTERN {name: $id})
RETURN t.id AS id, t.name AS name, t.kind AS kind, t.description AS descriptionRun yourself →The tactic(s) this technique serves.
MATCH (t:ATTACK_PATTERN {name: $id})-[:USES_TACTIC]->(tac:ATTACK_PATTERN)
RETURN tac.id AS id, tac.name AS name
LIMIT 10Run yourself →This id's parent technique, if it is a sub-technique.
MATCH (p:ATTACK_PATTERN {name: $parentId})
RETURN p.id AS id, p.name AS name
LIMIT 1Run yourself →Sub-techniques of this technique, if any.
MATCH (c:ATTACK_PATTERN) WHERE c.id STARTS WITH $subPrefix
RETURN c.id AS id, c.name AS name
ORDER BY c.id
LIMIT 25Run yourself →Threat actors observed using this technique.
MATCH (a:ACTOR)-[:USES_TECHNIQUE]->(t:ATTACK_PATTERN {name: $id})
RETURN a.name AS name
LIMIT 100Run yourself →Or query Whisper from your own LLM workflow via the Whisper MCP server.