An Overview of the Incident Response Process
Contrary to public perception, incident response is a process and not a one-off event. For incident response to be truly successful, teams have to use an integrated and organized method to tackle any incident.
Here are the five important steps of an effective incident response program:
Companies – Getting Started & Next Steps
Preparation is the core of every incident response that works. Even the best people cannot effectively tackle an incident if there are no predetermined guidelines. A solid plan to support the team is a must. To successfully address security events, this plan should include four elements: IR policy development and documentation, communication guidelines, threat intelligence feeds, and cyber hunting exercises.
A Simple Plan: Professionals
Detection and Reporting
This part is concerned with monitoring security events for detecting, alerting and reporting foreseen security incidents.
* Security event monitoring is possible with the help of intrusion prevention systems, firewalls, and data loss control measures.
* Potential security incident detection can be done through the correlation of alerts in a Security Information and Event Management (SIEM) system.
* Before alerts are issued, analysts create an incident ticket, present initial findings, and lay down a preliminary incident classification.
* When reporting, there must be room for regulatory reporting escalations.
Triage and Analysis
This is where most of the effort in correctly scoping and understanding the security incident occurs. Resources have to be utilized for the collection of data from tools and systems for more extensive analysis, as well as to find indicators of compromise. People must be knowledgeable and skilled in live memory and malware analysis, digital forensic and live system responses.
As evidence is gathered, analysts must concentrate focus on three main areas:
a. Endpoint Analysis
> Know the tracks left by the threat actor
> Obtain artifacts to create activity timeline
> Conduct a forensic analysis of a detailed copy of systems, and have RAM scan through and point to key artifacts to know what transpired on a device
b. Binary Analysis
> Check dubious binaries or tools the attacker used and document those programs’ functionalities.
> Go through presently used systems and event log technologies and determine the extent of compromise.
> Document all machines, accounts, etc. that may have been compromised for damage containment and neutralization.
Containment and Neutralization
This counts as one of the most vital phases of incident response. Containment and neutralization is based on the intelligence and compromise indicators found in the analysis stage. After system restoration and security verification, normal operations can continue.
Even after the incident is resolved, more work must be done. All information useful in the prevention of similar problems in the future should be documented. This step can be divided into the following:
> completion of incident report for the improvement of the incident response plan and prevention of similar security problems in the future
> ponst-incident monitoring to stop the reappearance of the threat actors
> intelligence feed updates
> identifying preventative measures> identifying preventative techniques
> improving internal coordination in the organization to implement new security measures properly