> 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/possible-kerberoasting-without-spns.md).
# Possible Kerberoasting without SPNs
### 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 Firewall traffic Logs OR XDR Agent
|
| ATT\&CK Tactic | Credential Access (TA0006) |
| ATT\&CK Technique | Steal or Forge Kerberos Tickets: Kerberoasting (T1558.003) |
| Severity | Low |
### Description
A user specifically requested weak and deprecated encryption in a Kerberos TGS request. This provides easy-to-crack hashes, and is typically a sign of a Kerberoasting attack. The requested service was specified by using a suspicious SPN type, which is often used by Kerberoasting tools to request by SAN instead of SPN.
### Attacker's Goals
Crack service account credentials by obtaining an easy-to-crack Kerberos ticket.
### Investigative actions
Check who used the host at the time of the alert to rule out a benign service or tool requesting weak Kerberos encryption.
### Variations
Possible Kerberoasting without SPNs on a sensitive server
**Synopsis**
| Field | Value |
| ----------------- | ---------------------------------------------------------- |
| ATT\&CK Tactic | Credential Access (TA0006) |
| ATT\&CK Technique | Steal or Forge Kerberos Tickets: Kerberoasting (T1558.003) |
| Severity | Medium |
**Description**
A user specifically requested weak and deprecated encryption in a Kerberos TGS request. This provides easy-to-crack hashes, and is typically a sign of a Kerberoasting attack. The requested service was specified by using a suspicious SPN type, which is often used by Kerberoasting tools to request by SAN instead of SPN.
**Attacker's Goals**
Crack service account credentials by obtaining an easy-to-crack Kerberos ticket.
**Investigative actions**
Check who used the host at the time of the alert to rule out a benign service or tool requesting weak Kerberos encryption.
---
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