A user logged on to multiple workstations via Schannel

Cortex XDR Analytics Alert Reference by Alert name

Product
Cortex XDR
Last date published
2024-06-04
Category
Analytics Alert Reference
Order
Alert name

Synopsis

Activation Period

14 Days

Training Period

30 Days

Test Period

1 Hour

Deduplication Period

1 Day

Required Data

  • Requires one of the following data sources:
    • Windows Event Collector
      OR
    • XDR Agent

Detection Modules

Identity Analytics

ATT&CK Tactic

ATT&CK Technique

Severity

Informational

Description

A user logged on to multiple workstations with a certificate via Schannel. This may be indicative of a compromised account.

Attacker's Goals

Elevate permissions and establish persistence.

Investigative actions

  • Verify the activity with the performing user.
  • Check for possible certificate authentications with the subject user.
  • Check if the user logged in to other endpoints via Schannel.

Variations

Rare user authentication with a certificate via Schannel

Synopsis

ATT&CK Tactic

ATT&CK Technique

Severity

Low

Description

A rare user authentication with a certificate via Schannel was observed. This may be indicative of a compromised account.

Attacker's Goals

Elevate permissions and establish persistence.

Investigative actions

  • Verify the activity with the performing user.
  • Check for possible certificate authentications with the subject user.
  • Check if the user logged in to other endpoints via Schannel.


Abnormal authentication with a certificate via Schannel

Synopsis

ATT&CK Tactic

ATT&CK Technique

Severity

Informational

Description

An abnormal authentication with a certificate via Schannel was observed. This may be indicative of a compromised account.

Attacker's Goals

Elevate permissions and establish persistence.

Investigative actions

  • Verify the activity with the performing user.
  • Check for possible certificate authentications with the subject user.
  • Check if the user logged in to other endpoints via Schannel.