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Actual exam question for Palo Alto Networks's SecOps-Pro exam Question #: 71 Topic #: 1
A threat hunting team is proactively searching for signs of 'Kerberoasting' attacks within their Active Directory environment using Cortex XSIAM. This involves an attacker requesting service tickets (TGS) for service principal names (SPNs) that have user accounts associated with them, then cracking the hash offline. Which of the following XSIAM data sources, XQL queries, and rule types would be most pertinent for detecting and correlating such activity, and how would XSIAM's 'Attack Surface Management' contribute to this hunt?
Kerberoasting is an identity-based attack. Therefore, the most critical data source is identity and authentication logs, specifically those detailing TGS requests in Active Directory. The XQL query in option B correctly targets TGS requests and looks for the '$' character in the service name, which is characteristic of SPNs, and then aggregates by user to identify users making an unusual number of such requests. This forms the basis for a BIOC rule. While some Kerberoasting tools might leave endpoint traces, focusing on the core authentication activity is more robust. Cortex XSIAM's Attack Surface Management (ASM) capability is highly relevant because it helps identify misconfigurations or risky assets. In the context of Kerberoasting, ASM can identify user accounts that have SPNs assigned to them (a common misconfiguration or legacy setup) that attackers might target, allowing the security team to harden these accounts proactively by ensuring strong passwords or removing unnecessary SPNs, thereby reducing the attack surface for Kerberoasting.
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