Cyber Incident Investigation

Attacks on computer security are unavoidable. What determines the outcome is how your company handles and rebounds from an incident.

Cybercriminals, ransomware, malware, and other threats regularly target our information, operations, and systems. The worst effects of a security breach will be felt by most enterprises, notwithstanding our best attempts to prevent them. To prevent these prospective security vulnerabilities, you must have an up-to-date, well-honed cyber security response strategy in place.

Investigating an incident

A comprehensive security response plan and management procedure includes incident investigation as one of its many components. When the security staff is informed of an event that has happened on the system, the entire procedure gets started. A security event might involve everything from loss of service assaults, harmful code (such as computer viruses), to unauthorized users brought on by identity thefts or by an unscrupulous employee.

The cyber security group will analyse the issue when the inappropriate behaviour has been located to ascertain its breadth and develop a confinement and restoration plan that tries to limit the harm.

Process for Investigating Incidents

A thorough incident investigation identifies the underlying factors that contributed to a malicious penetration of the system. Incident investigations, more critically, can assist security teams in creating efficient procedures to avoid future assaults.

This procedure entails:

Determine the kind of assault that hit the system right away. Was the danger, for instance, the consequence of lateral forces used by computer hackers to methodically relocate through a network in search of information or resources to steal information, DDOS malware that used known weaknesses to afflict the framework, a malicious insider perpetrated by someone who had authorized network connectivity, or an insider threat conducted by someone who had access to it?

Collecting Information: Security personnel must collect as much as they can about the occurrence to evaluate the threat after determining the sort of assault that took place. This entails gaining knowledge of the organizations, equipment, apps, etc. involved in the event as well as a history of their actions over time. It also entails identifying any information that may have left the area and any other areas of the system that may now be affected.

Tools for Investigating Incidents

Given the ongoing expansion and evolution of the cyber security threat environment, incident investigation may be a laborious and time-consuming procedure. Hacker strategies are evolving quickly to get around the established security measures implemented by businesses. For instance, while infiltrating systems, hackers more frequently use current techniques and procedures as well as passwords that have been stolen. Desktop software services, office efficiency programs, and programming language are examples of tools that are obviously not virus and have highly legal uses on a system. The great bulk of the consumption is typically explained by company, which makes it easier for an adversary to fit in.

Security experts are left to handle these difficulties in conventional methods to incident investigations. This has two issues: first, it is not sustainable because it is difficult to locate and keep qualified security researchers, and two, it takes a lot of time, so only a limited number of occurrences are completely analysed. The reality that most detecting technologies don’t offer any background to start the inquiry or any assistance for the investigative procedures really makes the matter worse.

The methods cyber forensic investigators employ

The information is examined by cyber forensic investigators using a variety of tools and procedures, some of which are:

Backward steganography: Steganography is a technique for concealing crucial information within a computer file, picture, etc. So, to evaluate the information and find a connection to the incident, cyber forensic investigators use reverse steganography.

Without relying on digital evidence, specialists in probabilistic forensics examine and recreate technology to address. In this context, the term “relics” refers to unexpected data changes brought on by digital operations.

Cross-drive assessment: In this procedure, data from various computer files is compared and cross-referenced to assess and save data that is pertinent to the study.

Live analysis: Using this method, the operating system of a criminal’s computer is examined while it is actively functioning. To obtain certain important data, it targets the unstable RAM information.

Lost file recovery entails looking through memory for remnants of a completely erased document to retrieve it for use as evidence.

How to Effectively Investigate a Cyber Incident in 7 Stages

Step 1: Recognition

Finding out there’s been a cyber-attack is the first stage. You should mention how the cyber threat was discovered as well. This might happen, for instance, because of a user identifying the problem or a system warning. The event can be reproduced where necessary to identify its origins. What are the strike’s signs, to finish? Has a user lost their username and password because they clicked on a malicious link? Has a program’s functionality decreased?

Step 2: Initial Research

The following action is to launch a preliminary investigation into the incident. All compromised platforms and applications should be noted by managers. The conclusions then need to be matched to those that users have stated after being recognized.

Before repair, the cyber incident’s extent should be determined, and landmark developments set.

Step 3: Take Quick Actions

To stop the origin of the cybersecurity problem from causing more cyberthreats, decisive action must be done. For instance, in the occasion of a malware email, the offending email should be tracked down, removed from all user mailboxes, users must be warned not to press on any links in the emails, connectivity to the data centres must be restricted to avoid unauthorized access, and all peoples’ passwords must be reset in bulk.

Step 4: Initial Reporting

After taking the necessary steps to stop the imminent threat of harm, the Senior Supervisory Board should be informed of an original investigation. This review should detail all measures taken up to this point, such as the verification of the event, users with whom communication has been established, and the topics that were covered, findings from the preliminary investigation, causative factors of the event, and any instantaneous measures that have been chosen to take.

Step 5: Planning for Remediation

A strategy for the restoration of any impacts that the cyber event has produced must be prepared when it has been determined that the damage the cyber incident can create cannot be increased and all strategies have been shared with SLT.

All activities’ estimated completion times, priorities, and designated owners must be included in the planning process.

Step 6: Remediation

The strategy must be carried out after it has been developed. The activities should be finished in the order specified in the written schedule. Once an action is finished, it needs to be noted and recorded.

Step 7: Reporting

Following the implementation of corrective measures and the stabilization of the organization’s system, work on the event should proceed by capturing everything that has happened since the occurrence.

The incident should be notified to the appropriate 3rd parties, such as the nation’s regulatory agency, in the case that information has been stolen. The SLT must receive reports detailing the measures taken, an assessment of the incident, any unfinished business, and any lessons discovered that could help avoid a similar assault in the future.

Why collaborate with Comsorn?

Comsorn evaluates your essential assets from every viewpoint by fusing professional industry experience with engineering know-how and data technology best practices. We can successfully cross the digital gap between OT and IT systems thanks to our domain expertise, and we can give enterprises the approach and design, information, and resources they require to get ready for, stop, and recuperate from cyber catastrophes.