Weakly-Encrypted Kerberos Ticket Requested

The
Weakly-Encrypted Kerberos Ticket Requested
alert triggers when a weakly-encrypted Kerberos ticket-granting service (TGS) was requested and could potentially be cracked.

Synopsis

10 minutes
3 days
14 days
10 minutes
Traffic and Enhanced Application logs or Windows Event Collector
Severity
Low

Description

A host specifically requested a Kerberos ticket-granting service (TGS) ticket to be encrypted with weak and deprecated encryption. This provides easy-to-crack hashes, and is typically a sign of a Kerberoasting attack.

Attacker's Goals

Crack 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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