Synopsis
Activation Period |
14 Days |
Training Period |
30 Days |
Test Period |
N/A (single event) |
Deduplication Period |
1 Day |
Required Data |
|
Detection Modules |
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ATT&CK Tactic |
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ATT&CK Technique |
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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.