Modification of Boot Configurationedit

Identifies use of bcdedit.exe to delete boot configuration data. This tactic is sometimes used as by malware or an attacker as a destructive technique.

Rule type: eql

Rule indices:

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

Severity: low

Risk score: 21

Runs every: 5m

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

Maximum alerts per execution: 100

References: None

Tags:

  • Elastic
  • Host
  • Windows
  • Threat Detection
  • Impact

Version: 9

Rule authors:

  • Elastic

Rule license: Elastic License v2

Rule queryedit

process where event.type in ("start", "process_started") and
  (process.name : "bcdedit.exe" or process.pe.original_file_name == "bcdedit.exe") and
  (process.args : "/set" and process.args : "bootstatuspolicy" and process.args : "ignoreallfailures") or
  (process.args : "no" and process.args : "recoveryenabled")

Framework: MITRE ATT&CKTM