A disabled user attempted to log in to a VPN

Cortex XDR Analytics Alert Reference by data source

Product
Cortex XDR
Last date published
2024-12-03
Category
Analytics Alert Reference
Order
data source

Synopsis

Activation Period

14 Days

Training Period

30 Days

Test Period

N/A (single event)

Deduplication Period

1 Day

Required Data

  • Requires one of the following data sources:
    • Palo Alto Networks Global Protect
      OR
    • Third-Party VPNs

Detection Modules

Identity Analytics

Detector Tags

ATT&CK Tactic

Initial Access (TA0001)

ATT&CK Technique

Valid Accounts: Domain Accounts (T1078.002)

Severity

Low

Description

A disabled user attempted to log in suspiciously to a VPN.

Attacker's Goals

Use an account that was possibly compromised in the past to gain access to the network.

Investigative actions

  • See whether the service authentication was successful.
  • Confirm that the activity is benign (e.g. a contractor user).
  • Check whether you have issues with your Cloud Identity Engine failing to sync data from Active Directory.

Variations

Possible VPN login attempt by disabled user

Synopsis

ATT&CK Tactic

Initial Access (TA0001)

ATT&CK Technique

Valid Accounts: Domain Accounts (T1078.002)

Severity

Informational

Description

A disabled user attempted to log in suspiciously to a VPN.

Attacker's Goals

Use an account that was possibly compromised in the past to gain access to the network.

Investigative actions

  • See whether the service authentication was successful.
  • Confirm that the activity is benign (e.g. a contractor user).
  • Check whether you have issues with your Cloud Identity Engine failing to sync data from Active Directory.