Windows Event ID 4627 – Group Membership Information

Event 4627 is generated along with event 4624 (successful account logon) and shows the entire list of groups that the particular logged-on account belongs to. If all the security information cannot be fit into a single security audit event, multiple events are generated.

This log data provides the following information:

• Security ID
• Account Name
• Account Domain
• Logon ID
• Event in Sequence
• Group Membership

Why does event ID 4627 need to be monitored?

• To ensure there are no reports from other Security IDs, apart from "NULL SID".
• To track whether members of a specific group have logged on.
• To monitor actions of high value accounts
• To detect anomalies and malicious actions
• To ensure non-active, external, and restricted accounts are not used
• To ensure that only white-listed accounts perform certain specific actions
• To enforce conventions and compliances

Pro Tip:

With in-depth reports, real-time alerts, and graphical displays, ADAudit Plus tracks successful logons by local users and the groups associated with that account, thus helping you meet your security, operational, and compliance needs with absolute ease.