Detection catalogue
Explore published rules with transparent provenance, licensing, and ATT&CK mappings.
- detections
Loading detections…
Loading detections
Explore published rules with transparent provenance, licensing, and ATT&CK mappings.
Loading detections…
The following analytic identifies a source endpoint failing to authenticate with 30 unique invalid domain users using the Kerberos protocol. This detection leverages EventCode 4768, specifically looking for failure code 0x6, indicating the user is not found in the Kerberos database. This activity is significant as it may indicate a Password Spraying attack, where an adversary attempts to gain initial access or elevate privileges. If confirmed malicious, this could lead to unauthorized access or privilege escalation within the Active Directory environment, posing a significant security risk.
Published to signed-in readers
The query as its source wrote it, its canonical form, and the content hash that pins this exact revision.