Privilege Escalation via Named Pipe Impersonation

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Privilege Escalation via Named Pipe Impersonation

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Identifies a privilege escalation attempt via named pipe impersonation. An adversary may abuse this technique by utilizing a framework such Metasploit’s meterpreter getsystem command.

Rule type: eql

Rule indices:

  • winlogbeat-*
  • logs-endpoint.events.*
  • logs-windows.*

Severity: high

Risk score: 73

Runs every: 5m

Searches indices from: now-9m (Date Math format, see also Additional look-back time)

Maximum alerts per execution: 100

References:

Tags:

  • Elastic
  • Host
  • Windows
  • Threat Detection
  • Privilege Escalation

Version: 102

Rule authors:

  • Elastic

Rule license: Elastic License v2

Investigation guide

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Rule query

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process where event.type == "start" and
 process.pe.original_file_name in ("Cmd.Exe", "PowerShell.EXE") and
 process.args : "echo" and process.args : ">" and process.args : "\\\\.\\pipe\\*"

Framework: MITRE ATT&CKTM