A user sent multiple TGT requests to irregular service

Cortex XDR Analytics Alert Reference by Alert name

Product

Cortex XDR

Last date published

2024-10-08

Activation Period	14 Days
Training Period	30 Days
Test Period	10 Minutes
Deduplication Period	1 Day
Required Data	Requires one of the following data sources: Windows Event Collector OR XDR Agent with eXtended Threat Hunting (XTH)
Detection Modules	Identity Analytics
Detector Tags
ATT&CK Tactic	Credential Access (TA0006)
ATT&CK Technique	Steal or Forge Kerberos Tickets: Kerberoasting (T1558.003)
Severity	Low

A user sent multiple TGT requests to services other than KRBTGT and KADMIN. This is typically a sign of a Kerberoasting attack.

Crack account credentials by obtaining an easy-to-crack Kerberos ticket.

Check who used the host at the time of the alert, to rule out a benign service or tool requesting weak Kerberos encryption.

ATT&CK Tactic	Credential Access (TA0006)
ATT&CK Technique	Steal or Forge Kerberos Tickets: Kerberoasting (T1558.003)
Severity	Medium

A user sent multiple TGT requests to services other than KRBTGT and KADMIN. This is typically a sign of a Kerberoasting attack.

Crack account credentials by obtaining an easy-to-crack Kerberos ticket.

Check who used the host at the time of the alert, to rule out a benign service or tool requesting weak Kerberos encryption.

ATT&CK Tactic	Credential Access (TA0006)
ATT&CK Technique	Steal or Forge Kerberos Tickets: Kerberoasting (T1558.003)
Severity	Informational

A user sent a TGT request to a service other than KRBTGT and KADMIN. This might indicate an attempt to perform a Kerberoasting attack.

Crack account credentials by obtaining an easy-to-crack Kerberos ticket.

Check who used the host at the time of the alert, to rule out a benign service or tool requesting weak Kerberos encryption.