A disabled user attempted to log in to a VPN

Synopsis

Field	Value
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
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

Field	Value
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.