Unusual Source IP for a User to Logon fromedit

A machine learning job detected a user logging in from an IP address that is unusual for the user. This can be due to credentialed access via a compromised account when the user and the threat actor are in different locations. An unusual source IP address for a username could also be due to lateral movement when a compromised account is used to pivot between hosts.

Rule type: machine_learning

Machine learning job: auth_rare_source_ip_for_a_user

Machine learning anomaly threshold: 75

Severity: low

Risk score: 21

Runs every: 15 minutes

Searches indices from: now-30m (Date Math format, see also Additional look-back time)

Maximum alerts per execution: 100



  • Elastic
  • Authentication
  • Threat Detection
  • ML
  • Initial Access

Version: 100 (version history)

Added (Elastic Stack release): 7.14.0

Last modified (Elastic Stack release): 8.5.0

Rule authors: Elastic

Rule license: Elastic License v2

Potential false positivesedit

Business travelers who roam to new locations may trigger this alert. ==== Threat mapping


Rule version historyedit

Version 100 (8.5.0 release)
  • Formatting only
Version 2 (8.4.0 release)
  • Formatting only