Time-based Analysis

This is strongly related to Analysis of Patterns

Object:

The object of time-based analysis is the chronological sequence of events related to the incident. This includes the timestamps associated with alerts, logs, or any other relevant data sources.

Process:

The process of time-based analysis involves:

• Timestamp Examination: Reviewing the timestamps of alerts and events to establish a timeline.
• Temporal Correlation: Identifying patterns or correlations in the timing of events that may indicate a coordinated attack or a series of related activities.
• Temporal Anomalies: Detecting any unusual or irregular temporal patterns that might signal malicious behavior.
• Duration Assessment: Evaluating the duration of the incident to understand whether it is a one-time event, an ongoing campaign, or a persistent threat.

Outcome:

The outcome of time-based analysis includes:

• Timeline Visualization: Creating a visual representation of the incident timeline, which aids in understanding the sequence of events.
• Pattern Recognition: Identifying temporal patterns that provide insights into the nature of the incident.
• Persistence Assessment: Determining whether the incident is a short-term occurrence or part of a more extended, persistent threat.
• Temporal Correlation Findings: Documenting any significant findings related to the timing of events that may contribute to incident categorization and risk assessment.

Example Scenario:

Suppose an analyst is investigating a series of alerts related to unauthorized access. The time-based analysis might reveal that multiple failed login attempts occurred within a short time frame, followed by a successful login from a suspicious IP address. This information could indicate a potential brute-force attack. The duration of this activity and any subsequent actions can further inform the severity and impact assessments.

In summary, time-based analysis is a crucial component of incident analysis, providing valuable insights into the temporal aspects of events and aiding in the understanding of the incident’s scope and nature.