> For the complete documentation index, see [llms.txt](https://cortex-docs.paloaltonetworks.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://cortex-docs.paloaltonetworks.com/analytics-alerts/alerts-by-name/multiple-weakly-encrypted-kerberos-tickets-received.md).

# Multiple Weakly-Encrypted Kerberos Tickets Received

### Synopsis

| Field                | Value                                                                                                       |
| -------------------- | ----------------------------------------------------------------------------------------------------------- |
| Activation Period    | 14 Days                                                                                                     |
| Training Period      | 30 Days                                                                                                     |
| Test Period          | 10 Minutes                                                                                                  |
| Deduplication Period | 1 Hour                                                                                                      |
| Required Data        | <p>Requires one of the following data sources:<br>Palo Alto Networks Firewall traffic Logs OR XDR Agent</p> |
| ATT\&CK Tactic       | Credential Access (TA0006)                                                                                  |
| ATT\&CK Technique    | Steal or Forge Kerberos Tickets: Kerberoasting (T1558.003)                                                  |
| Severity             | Low                                                                                                         |

### Description

A user accessed a number of services associated with user accounts in the 10 minutes leading to the alert, generating a number of weakly encrypted Kerberos TGS (ticket granting service) tickets that is significantly larger than the number of weakly encrypted TGS tickets received by that user in the 30 days leading to the alert. Services associated with user accounts are a common target for Kerberoasting due to default weak encryption.

### Attacker's Goals

Crack account credentials by obtaining easy-to-crack Kerberos tickets.

### Investigative actions

Check who used the host at the time of the alert, to rule out a benign service or tool accessing those services.


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