Why would a multi-event YARA-L rule be preferred over a single-event rule in SecOps detection?

• A. Because it can correlate across events such as process relationships and hashes.
• B. Because it is easier to implement.
• C. Because it uses only a single hash.
• D. Because it ignores process relationships.

Answer: (A)

Correlating signals across multiple events enables robust SecOps detection. A multi-event YARA-L rule can link different observations—such as a process’s relationships (which process spawned which) and the hashes of files involved—into a single, coherent story of malicious activity. This context is crucial because many threats unfold across steps, and a single artifact alone (like a hash) can be benign in isolation. By tying together multiple indicators over time, the rule can confirm that the pieces belong to the same attack scenario, reducing false positives and catching multi-stage behaviors that would be missed by looking at one event at a time. Relying on just one event or ignoring relationships loses this valuable context, making detection weaker.