Pass the ECCouncil ECIH 212-89 Questions and answers with ExamsMirror

Anti-forensics refers to techniques used to hinder the forensic analysis of a computer system. By hiding files in slack space, changing file headers, embedding suspicious files in executables, and altering metadata, BadGuy Bob is attempting to make it difficult for forensic analysts to find, analyze, and attribute the malicious activities and data on his laptop. These actions are designed to conceal evidence, manipulate digital artifacts, and obstruct investigations, making them clear examples of anti-forensic techniques. While such actions could be part of broader criminal activities, constituting a felony, and could be seen as adversarial mechanics or legal hostility in specific contexts, the most accurate classification of these techniques is anti-forensics.

When Investigator Ian gives you a drive image to investigate, the type of analysis you are performing is static analysis. Static analysis involves examining the contents of a drive, file, or binary without executing the system or the application. It's about analyzing the data at rest. This type of analysis is crucial for forensics investigations because it allows for the examination of files, directories, and system information without altering any state or data, thereby preserving the integrity of the evidence. Static analysis is contrasted with dynamic analysis, which involves analyzing a system in operation (real-time or live) or executing the application to observe its behavior.

Comprehensive and Detailed Explanation (ECIH-aligned):

ECIH prioritizes containment of the most critical threat vector. The primary server actively exfiltrating data represents the highest risk.

Option B is correct because isolating the primary server immediately stops data loss and attacker control. IoT remediation can follow once core assets are secured.

Options A and D delay containment. Option C causes unnecessary disruption.

ECIH stresses that responders must address the most damaging threat first, making Option B correct.

Comprehensive and Detailed Explanation (ECIH-aligned):

The ECIH incident validation phase emphasizes the importance of direct evidence when confirming unauthorized access. Log entries that show access to sensitive or restricted files provide concrete proof that an attacker successfully breached controls.

Option B is correct because access logs tied to critical resources confirm both authentication success and unauthorized activity. Failed logins or system performance issues alone do not confirm compromise.

Option A, C, and D are indirect indicators that may signal suspicious behavior but cannot independently confirm unauthorized access.

Therefore, verified log evidence is the strongest indicator, aligning with ECIH incident triage and validation principles.

When a browser does not expire a session after the user fails to logout properly, it is indicative of a vulnerability related to broken authentication. Broken authentication is a security issue where attackers can exploit flaws in the authentication mechanism to impersonate other users or take over their sessions. Failure to properly manage session lifetimes, such as not expiring sessions on logout, can allow an attacker to reuse old sessions or session IDs, potentially gaining unauthorized access to user accounts. This vulnerability is classified under A2: Broken Authentication in the OWASP Top 10, which lists the most critical web application security risks. The OWASP Top 10 serves as a guideline for developers and web application providers to understand and mitigate common security risks.

A Permanent Denial-of-Service (PDoS) attack, also known as "phlashing," is a form of attack that targets hardware, causing irreversible damage to the hardware components, thereby making the device unusable without a replacement or significant hardware intervention. In the scenario described with Zaimasoft, the attackers' actions leading to the damage of hardware components align with the characteristics of a PDoS attack. Unlike Distributed Denial-of-Service (DDoS) or Denial-of-Service (DoS) attacks, which generally aim to overwhelm a system's resources temporarily, or DRDoS (Distributed Reflection Denial of Service), which involves amplification techniques using third-party servers, a PDoS attack directly damages the physical hardware, necessitating its replacement or reinstallation. This makes PDoS particularly severe due to its permanent impact on the targeted organization's hardware infrastructure.

Process memory, or volatile memory (RAM), is digital evidence that requires a constant power supply to retain data and is deleted or lost when the power supply is interrupted. It contains information about the system's ongoing processes and operations. This type of evidence can be crucial for forensic investigations as it may hold information about user actions, system events, and the state of applications and services at the time of an incident. Unlike swap files, event logs, and slack space, which can retain information without a constant power supply, process memory is inherently volatile and its contents are lost when a device is powered off or restarts.

Comprehensive and Detailed Explanation (ECIH-aligned):

This scenario highlights a preparation phase improvement. ECIH strongly emphasizes the importance of out-of-band communication during incidents, especially when primary systems are compromised.

Option D is correct because VOIP and SMS reporting channels allow incident reporting even when email systems are unavailable or under attack. ECIH identifies out-of-band communication as critical for maintaining coordination and timely escalation during incidents.

Options A–C do not address the reporting failure described.

Establishing alternate communication channels strengthens incident readiness and response resilience, aligning directly with ECIH best practices.

The correct sequence of steps involved in forensic readiness planning, based on the activities described, is as follows:

Identify the potential evidence required for an incident.

Determine the source of the evidence.

Define a policy that determines the pathway to legally extract electronic evidence with minimal disruption.

Establish a policy for securely handling and storing the collected evidence.

Identify if the incident requires full or formal investigation.

Train the staff to handle the incident and preserve the evidence.

Create a special process for documenting the procedure.