Unusual Source IP for a User to Logon from
editUnusual Source IP for a User to Logon from
editA 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
References:
Tags:
- 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 positives
editBusiness travelers who roam to new locations may trigger this alert. ==== Threat mapping
Framework: MITRE ATT&CKTM
-
Tactic:
- Name: Initial Access
- ID: TA0001
- Reference URL: https://attack.mitre.org/tactics/TA0001/
-
Technique:
- Name: Valid Accounts
- ID: T1078
- Reference URL: https://attack.mitre.org/techniques/T1078/
Rule version history
edit- Version 100 (8.5.0 release)
-
- Formatting only
- Version 2 (8.4.0 release)
-
- Formatting only