Whoami Process Activityedit

Identifies use of whoami.exe which displays user, group, and privileges information for the user who is currently logged on to the local system.

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
  • Discovery

Version: 7 (version history)

Added (Elastic Stack release): 7.6.0

Last modified (Elastic Stack release): 7.13.0

Rule authors: Elastic

Rule license: Elastic License v2

Potential false positivesedit

Some normal use of this program, at varying levels of frequency, may originate from scripts, automation tools and frameworks. Usage by non-engineers and ordinary users is unusual.

Rule queryedit

process where event.type in ("start", "process_started") and
process.name : "whoami.exe"

Threat mappingedit

Framework: MITRE ATT&CKTM

Rule version historyedit

Version 7 (7.13.0 release)
  • Updated query, changed from:

    event.category:process and event.type:(start or process_started) and
    process.name:whoami.exe
Version 6 (7.12.0 release)
  • Formatting only
Version 5 (7.11.2 release)
  • Formatting only
Version 4 (7.10.0 release)
  • Updated query, changed from:

    process.name:whoami.exe and event.code:1
Version 3 (7.9.0 release)
  • Formatting only
Version 2 (7.7.0 release)
  • Formatting only