TGT request with a spoofed sAMAccountName - Network

Synopsis

Field	Value
Activation Period	14 Days
Training Period	30 Days
Test Period	N/A (single event)
Deduplication Period	3 Hours
Required Data	XDR Agent
Detection Modules	Identity Analytics
ATT&CK Tactic	Privilege Escalation (TA0004), Persistence (TA0003)
ATT&CK Technique	Account Manipulation (T1098), Valid Accounts (T1078)
Severity	Medium

Description

A Kerberos authentication ticket (TGT) was requested for an account with a spoofed sAMAccountName.

Attacker's Goals

Elevate privileges from standard domain user to domain admin.

Investigative actions

• Check if the domain controller is patched or vulnerable to the attack.
• Look for associated sAMAccountName rename events.
• Check if any associated service tickets were granted.
• Follow actions by the account and if it performed a DCSync.