Most Popular Detection 2026: Kerberoasting via RC4 TGS Ticket Request Bursts
Detects anomalous Kerberos Ticket Granting Service (TGS) requests from a single user account and IP within a 10-minute window. It specifically flags accounts requesting a high volume of TGS tickets or accessing multiple distinct services, where the tickets use RC4 encryption (0x17), which is a characteristic of Kerberoasting attacks targeting service accounts.
Microsoft Sentinel (KQL)
