IMPORTANT: No additional bug fixes or documentation updates will be released for this version. For the latest information, see the current release documentation.
« Modification of AmsiEnable Registry Key Modification of Dynamic Linker Preload Shared Object »
Elastic Docs ›Elastic Security Solution [7.16] ›Detections and alerts ›Prebuilt rule reference

Modification of Boot Configuration

edit

Modification of Boot Configuration

edit

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: 5 minutes

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

Maximum alerts per execution: 100

Tags:

  • Elastic
  • Host
  • Windows
  • Threat Detection
  • Impact

Version: 9 (version history)

Added (Elastic Stack release): 7.7.0

Last modified (Elastic Stack release): 7.16.0

Rule authors: Elastic

Rule license: Elastic License v2

Rule query

edit
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")

Threat mapping

edit

Framework: MITRE ATT&CKTM

Rule version history

edit
Version 9 (7.16.0 release)
  • Formatting only
Version 8 (7.13.0 release)

  • Updated query, changed from:

    event.category:process and event.type:(start or process_started) and
process.name:bcdedit.exe and process.args:(/set and (bootstatuspolicy
and ignoreallfailures or no and recoveryenabled))
Version 7 (7.12.0 release)
  • Formatting only
Version 6 (7.11.2 release)
  • Formatting only
Version 5 (7.11.0 release)
  • Formatting only
Version 4 (7.10.0 release)
  • Formatting only
Version 3 (7.9.1 release)
  • Formatting only
Version 2 (7.9.0 release)

  • Updated query, changed from:

    event.action:"Process Create (rule: ProcessCreate)" and
process.name:bcdedit.exe and process.args:(/set and (bootstatuspolicy
and ignoreallfailures or no and recoveryenabled))
« Modification of AmsiEnable Registry Key Modification of Dynamic Linker Preload Shared Object »