Modification of Boot Configuration

edit

Identifies use of bcdedit.exe to delete boot configuration data. Malware and attackers sometimes use this tactic as a destructive technique.

Rule type: query

Rule indices:

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

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
  • Defense Evasion

Version: 4 (version history)

Added (Elastic Stack release): 7.7.0

Last modified (Elastic Stack release): 7.10.0

Rule authors: Elastic

Rule license: Elastic License

Rule query

edit
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))

Threat mapping

edit

Framework: MITRE ATT&CKTM

Rule version history

edit
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))