212-89 EC Council Certified Incident Handler (ECIH v3) Questions and Answers

Racheal should check for DKIM (DomainKeys Identified Mail) in the email headers to analyze the authenticity of received emails. DKIM is an email authentication method designed to detect email spoofing. It provides a way for the receiver to check that an email claimed to have come from a specific domain was indeed authorized by the owner of that domain. It achieves this by affixing a digital signature, linked to a domain name, to each outgoing email message. The recipient can verify this signature to confirm that the email was not altered during its transmission and that it indeed comes from the specified domain, thereby helping to prevent email spoofing. Other options like SNMP (Simple Network Management Protocol), POP (Post Office Protocol), and ARP (Address Resolution Protocol) are not directly related to email authenticity checks.

Eradication is the phase in the incident response process where the root cause of an incident is removed or eliminated, and all attack vectors are closed to prevent similar incidents in the future. This step follows the containment phase, where the immediate threat is isolated to prevent further damage, and precedes the recovery phase, where normal operations are restored. Eradication involves thoroughly removing malware, unauthorized access mechanisms, or any other elements used in the attack, and securing any vulnerabilities that were exploited. The goal is to ensure that the threat cannot re-emerge and that the systems are secure before they are returned to operational status.

Evidence assessment is a critical step in the investigation phase of the computer forensics process. This step involves evaluating the evidence collected to determine its relevance and significance to the case at hand. It includes analyzing the secured data to identify what information can be used as evidence, its integrity, and how it can be related to the security incident. This phase is pivotal as it helps in building a coherent understanding of the incident and in establishing facts that can be presented in management reports or legal proceedings.

In the context of information security, the Incident Manager (IM) plays a crucial role in handling incidents from both a management and technical perspective. The Incident Manager is responsible for overseeing the entire incident response process, coordinating with relevant stakeholders, ensuring that incidents are analyzed, contained, and eradicated efficiently, and that recovery processes are initiated promptly. They are pivotal in ensuring communication flows smoothly between technical teams and upper management and that all actions taken are aligned with the organization's broader security policies and objectives. Unlike network administrators, threat researchers, or forensic investigators who may play more specialized roles within the incident response process, the Incident Manager has a broad oversight role that encompasses both technical and managerial aspects to ensure a comprehensive and coordinated response to security incidents.

BinText is a lightweight text extraction tool that can be used to perform string search analysis within binary files. This functionality is crucial for incident handlers like Jason, who are tasked with analyzing memory dumps for malicious activity or indicators of compromise. By searching for specific strings or patterns that are known to be associated with malware, BinText helps in identifying potentially harmful actions that a program could perform, thus aiding in the investigation of malware incidents.

The term "broken account management" refers to vulnerabilities in the account management functions of web applications, which can weaken valid authentication schemes. This can include issues with how accounts are created, updated, managed, and deleted, as well as how users recover forgotten passwords or perform password resets. Poorly implemented account management functions can allow attackers to bypass authentication, elevate privileges, or assume the identity of another user. This weakness is a significant security concern because it directly impacts the ability of a system to safeguard user data and maintain operational integrity.

Turning off the infected machine is a common immediate response to contain a malware incident and prevent it from spreading to other systems on the network. This action halts any ongoing malicious activities by the malware, thereby limiting the potential for further damage or data exfiltration. However, it is essential to note that this step can lead to the loss of volatile data that might be useful for forensic analysis. Therefore, it is advisable only when it's critical to stop the malware immediately, and there's a strategy in place for forensic investigation that includes handling non-volatile data or when the preservation of volatile data is not possible.

Threat correlation is a method used by incident responders to analyze and associate various indicators of compromise (IoCs) and alerts to identify genuine threats. By correlating data from multiple sources and applying intelligence to distinguish between unrelated events and coordinated attack patterns, responders can significantly reduce the rate of false-positive alerts. This enables teams to prioritize their efforts on the most critical and likely threats, thereby reducing potential risks and corporate liabilities. Effective threat correlation involves the use of sophisticated security information and event management (SIEM) systems, threat intelligence platforms, and analytical techniques to identify relationships between seemingly disparate security events and alerts.

When a corporate network's servers are sending huge amounts of traffic to a specific website, as detected by the network's Intrusion Prevention System (IPS), this behavior is indicative of a Botnet attack. A Botnet is a network of compromised computers, often referred to as "bots," that are controlled remotely by an attacker, typically without the knowledge of the owners of the computers. The attacker can command these bots to execute distributed denial-of-service (DDoS) attacks, send spam, or conduct other malicious activities. In this scenario, the servers behaving as bots and targeting a website with large volumes of traffic suggests that they have been co-opted into a Botnet to potentially perform a DDoS attack on the website abc.xyz.

James is working on the post-incident activities stage of the Incident Handling and Response (IH&R) process. After containing the spread of the infection and removing the malware, the focus shifts to assessing the impact of the incident on the organization and preparing a detailed report. This phase involves analyzing the extent of the damage, determining the cost of the attack, evaluating how well the incident was managed, and identifying lessons learned to improve future response efforts. The objective is to restore systems to normal operation, ensure no remnants of the threat remain, and implement measures to prevent recurrence.

A TCP Xmas scan is a type of network scanning technique used by attackers to identify open ports on a target machine. The name "Xmas" comes from the set of flags that are turned on within the packet, making it 'lit up like a Christmas tree'. Specifically, the FIN, PSH, and URG flags are set, which corresponds to the hexadecimal value 0X029 in the TCP header's flags field. Wireshark, a popular network protocol analyzer, allows users to create custom filters to detect specific types of network traffic, including malicious scanning attempts. By using the filtertcp.flags==0X029, Rose can detect packets that have these specific flags set, indicating a potential TCP Xmas scan attempt.

In Wireshark, to identify ICMP ping sweep attempts, the filtericmp.type == 8 or icmp.type ==0is used. This filter captures ICMP echo requests and echo replies, which are indicative of ping commands. Type 8 represents an echo request used when a source sends a ping, and type 0 represents an echo reply, which is the response from the target. By filtering for these ICMP types, Miko can detect a surge in ping requests across the network, which could indicate a ping sweep attempt—an exploratory activity often used by attackers to discover active hosts on a network by sending ping requests to multiple addresses.

BrowsingHistoryView is a tool designed to collect and analyze history data from various web browsers, including Microsoft Edge. It allows users to view the browsing history stored by their browsers in one unified interface. This includes URLs visited, page titles, visit times, and the number of visits to each page. While ChromeHistoryView is specific to Google Chrome, BrowsingHistoryView supports multiple browsers, making it versatile for analyzing history data across different platforms. MZCacheView and MZHistoryView do not exist as tools recognized for this purpose in the context of Microsoft Edge or other browser history analysis.

URL encoding, also known as percent-encoding, is a mechanism for encoding information in a Uniform Resource Identifier (URI) under certain circumstances. This technique involves replacing unsafe ASCII characters with a "%" followed by two hexadecimal digits that represent the character's ASCII code. This is necessary for embedding characters that are not allowed in URLs directly, such as spaces and symbols, or characters that have special meanings within URLs, ensuring that the URL is correctly interpreted by web browsers and servers.

User Behavior Analytics (UBA) is a cybersecurity process or tool that utilizes machine learning, algorithms, and statistical analyses to detect potentially harmful activities within an organization's network by comparing them against established patterns of users' behavior. It is particularly effective in identifying malicious internal actors or compromised users who may be conducting activities that deviate from their normal behavior patterns, such as accessing unauthorized data or systems, excessive file downloads, or unusual login times. UBA tools can flag these activities for further investigation, often before traditional security tools detect a breach. In contrast, SOC2 compliance reports, log forwarding, and syslog configuration are important for maintaining and auditing security standards and for infrastructure monitoring, but they are not primarily focused on detecting malicious behavior based on deviations from established user behavior patterns.

In the scenario described, Dickson is performing an active assessment. This type of vulnerability assessment involves using automated tools to actively scan and probe the network for identifying hosts, services, and vulnerabilities. Unlike passive assessments, which rely on monitoring network traffic without direct interaction with the targets, active assessments engage directly with the network infrastructure to discover vulnerabilities, misconfigurations, and other security issues by sending data to systems and analyzing the responses. This approach provides a more immediate and detailed view of the security posture but can also generate detectable traffic that might be noticed by defensive systems or affect the performance of live systems.

Incapsula is a cloud-based application delivery platform that offers a comprehensive security solution, including protection against Distributed Denial of Service (DDoS) attacks. By providing DDoS mitigation services, Incapsula helps protect websites and online services from being overwhelmed by traffic intended to make the resource unavailable to its intended users. The platform filters out malicious traffic and allows legitimate traffic through, thus ensuring that the organization's online resources remain available even under attack.

The responsibility of first responders does not include shutting down or rebooting the victim’s computer as a measure to preserve temporary and fragile evidence. In fact, such actions can potentially alter or destroy volatile data that could be crucial for the investigation. The primary responsibilities of first responders include protecting and identifying the crime scene, and ensuring the preservation of evidence in its original state as much as possible, which may involve isolating affected systems from the network but not necessarily shutting them down or rebooting them without proper forensic readiness and consideration.

System characterization is the process of defining the boundaries of an IT system, which includes identifying the resources, information, and functionality that constitute the system. This process is crucial for understanding the scope of the system, the data it processes, and the technology it employs. By characterizing a system, incident handlers can better understand the system's normal operations and behaviors, which is essential for identifying anomalies that may indicate a security incident. System characterization involves documenting the hardware, software, network configuration, data flows, and other critical elements of the IT environment. This foundational knowledge supports effective incident handling by providing a baseline against which suspicious activities can be compared.

The GPG18 and Forensic readiness planning (SPF) principles outline various guidelines to enhance an organization's readiness for forensic investigation and response. Principle 5, which suggests that organizations should adopt a scenario-based Forensic Readiness Planning approach that learns from experience gained within the business, emphasizes the importance of being prepared for a wide range of potential incidents by leveraging lessons learned from past experiences. This approach helps in continuously improving forensic readiness and response capabilities by adapting to the evolving threat landscape and organizational changes.

The data preprocessing step performed by Johnson, where he analyzes user activities within a certain time period to create time-ordered domain sequences for further analysis on sequential patterns, is known as user-specific sessionization. This process involves aggregating all user activities and requests into discrete sessions based on the individual user, allowing for a coherent analysis of user behavior over time. This is critical for identifying patterns that may indicate a watering hole attack, where attackers compromise a site frequently visited by the target group to distribute malware. User-specific sessionization helps in isolating and examining sequences of actions taken by users, making it easier to detect anomalies or patterns indicative of such an attack.

In a disassociation attack, the attacker sends disassociation frames to a wireless access point (AP) using a spoofed MAC address of a client or to the client pretending to be the AP. This forces the target to disconnect and often reconnect, causing a disruption in the wireless connectivity. Such attacks can be used to create a denial-of-service condition for the client, making the network resource unavailable. The primary objective of this attack is not to eavesdrop but to disrupt the normal operation of the wireless connection between the client and the AP.

Leaving sensitive business details over voicemail or sending them out through email broadcast messages is not a best practice for security. This approach significantly increases the risk of information leakage and unauthorized access to critical business information. Such practices can be exploited by insiders to conduct malicious activities, including data theft, fraud, or sabotage. The best practices for mitigating insider threats involve implementing strict access controls, monitoring and auditing employee actions, securing communications, and ensuring that sensitive information is only shared through secure and authorized channels. Encouraging or allowing the practice of leaving sensitive business details in such insecure manners contradicts the principles of information security and increases the vulnerability to insider attacks.

Malicious downloads initiated through manipulated office documents typically involve macro abuse. Macros are scripts that can automate tasks within documents and are embedded within Office documents like Word, Excel, and PowerPoint files. While macros can be used for legitimate purposes, they can also be abused by attackers to execute malicious code. When an office document with a malicious macro is opened, and macros are enabled, the macro can run arbitrary code that leads to malicious downloads, installing malware or performing other unauthorized actions on the victim's system.

Macro abuse has become a common vector for cyber attacks, as it exploits the functionality of widely used office applications. Attackers often craft phishing emails with attachments or links to documents that contain malicious macros, tricking users into enabling macros to execute the malicious code. This method is effective for bypassing some security measures since it relies on user interaction and exploitation of legitimate features.

An active assessment involves using automated tools to scan and probe the network actively to identify hosts, services, and vulnerabilities. This type of assessment directly interacts with the network components to gather information about the existing security posture, unlike passive assessments, which analyze traffic without sending packets to the target systems. Dickson's approach, employing automated tools to identify the network's hosts, services, and vulnerabilities, fits the definition of an active assessment. This method provides a more immediate understanding of the network's vulnerabilities, allowing for timely remediation actions.

Netcraft is a tool that provides internet security services, including the detection of phishing and spam emails. It offers a range of services that can help organizations identify fraudulent websites and phishing activities by analyzing web content and email messages for known phishing signatures and heuristics. This makes it a useful tool for incident handlers like Francis, who is tasked with detecting phishing and spam emails for client organizations. Other options listed, such as Nessus (a vulnerability scanner), BTCrack (a Bluetooth pin and link-key cracker), and Cain and Abel (a password recovery tool), do not specialize in detecting phishing or spam emails but serve different purposes in cybersecurity.

Reducing the success rate of SQL injection attacks is focused on minimizing vulnerabilities within the application's database interactions, rather than the broader server or network services. SQL injection prevention techniques typically involve input validation, parameterized queries, and the use of stored procedures, rather than changes to the network or server configuration.

A) Closing unnecessary application services and ports on the server is a general security best practice to reduce the attack surface but does not directly impact the success rate of SQL injection attacks. This action limits access to potential vulnerabilities across the network and server but doesn't address the specific ways SQL injection exploits input handling within web applications.

B) Automatically locking a user account after a predefined number of invalid login attempts within a predefined interval can help mitigate brute force attacks but has no direct effect on preventing SQL injection, which exploits code vulnerabilities to manipulate database queries.

C) Constraining legitimate characters to exclude special characters and D) Limiting the length of the input field are both direct methods to reduce the risk of SQL injection. They focus on controlling user input, which is the vector through which SQL injection attacks are launched. By restricting special characters that could be used in SQL commands and limiting input lengths, an application can reduce the potential for malicious input to form a part of SQL queries executed by the backend database.

Logging User IDs (D) can pose privacy concerns and may conflict with regulations such as the General Data Protection Regulation (GDPR), which emphasizes the protection of personal data and privacy. Therefore, while logging details such as Timestamps, Session IDs, and Source IP addresses are essential for security auditing to track when events occur, who is initiating sessions, and from where, care must be taken with User IDs. The handling of personally identifiable information (PII) must comply with privacy laws and organizational policies to safeguard individual privacy rights.

Email-bombing refers to the attack where the attacker sends a massive volume of emails to a specific email address or mail server in order to overflow the mailbox or overwhelm the server, potentially causing it to fail or deny service to legitimate users. This attack can disrupt communications and, in some cases, lead to the targeted email account being disabled. Masquerading involves pretending to be another legitimate user, spoofing is the creation of emails (or other communications) with a forged sender address, and a smurf attack is a specific type of Distributed Denial of Service (DDoS) attack that exploits Internet Protocol (IP) and Internet Control Message Protocol (ICMP) to flood a target with traffic. Email-bombing specifically targets email services with the goal of causing disruption by overflowing inboxes.

Volatile data refers to information that is stored temporarily and is lost when a computer is turned off or restarted, such as RAM contents, including open sockets and open ports, the date and time of the system, and the state of the network interface. The creation dates of files, however, are considered non-volatile data because they are preserved on the hard drive and remain available after the system is restarted or turned off. Non-volatile data is stored on persistent storage mediums like hard drives, SSDs, and magnetic tapes, where it remains until it is deleted or overwritten.

An Inappropriate Usage incident refers to instances where computing resources are misused or abused, often violating organizational policies or laws. While access-control attacks, reconnaissance attacks, and denial-of-service (DoS) attacks represent different types of external threats or methods of attack, an Insider Threat is an example of inappropriate usage. Insider threats come from individuals within the organization, such as employees or contractors, who misuse their access to harm the organization's interests. This can include stealing confidential information, intentionally disrupting systems, or other malicious activities that leverage their legitimate access to the organization's resources.

The term that describes the combination of strategies and services intended to restore data, applications, and other resources to the public cloud or dedicated service providers is "Cloud recovery." This term encompasses disaster recovery efforts focused on ensuring that an organization's digital assets can be quickly and effectively restored or moved to cloud environments in the event of data loss, system failure, or a disaster. Cloud recovery strategies are part of a broader disaster recovery and business continuity planning, ensuring minimal downtime and data loss by leveraging cloud computing's scalability and flexibility. Mitigation, analysis, and eradication are terms associated with other aspects of incident response and risk management, not specifically with the restoration of resources to cloud environments.

The vulnerability exploited by Clark through tampering with form and parameter values to gain unauthorized access to information assets is indicative of Broken Access Control. Broken Access Control vulnerabilities occur when a web application does not properly enforce restrictions on what authenticated users are allowed to do. Attackers can exploit these vulnerabilities to access unauthorized functionality or data, such as accessing other users' accounts, viewing sensitive files, and modifying other users’ data.

A permissive security policy is characterized by allowing all activities except those that are explicitly blocked. This approach starts with a default state of allowing access and functionality, with restrictions applied only to known dangerous services, attacks, or behaviors. Such a policy can lead to a wider attack surface because it assumes services and behaviors are safe unless proven otherwise.

A prudent policy would typically involve more conservative security measures, applying necessary restrictions to protect against identified and potential threats.

A paranoic policy would be at the extreme end of security measures, possibly blocking more than necessary to ensure the highest level of security, often at the expense of usability or functionality.

A promiscuous policy, in contrast, would be even more open than a permissive policy, essentially allowing nearly all traffic or actions with minimal restrictions, which is not what Rica observed.

Incident triage is the stage in the incident response process where the incident handler, like Mike, performs an initial assessment of the reported incident to determine its validity, severity, and potential impact. This includes analyzing the incident to verify if it is a genuine threat or a false positive. The purpose of incident triage is to prioritize incidents based on their criticality and ensure that resources are allocated effectively to address the most serious threats first. This stage is crucial for efficient incident management, as it helps in filtering out false alarms and focusing on real security incidents that require immediate attention.

Anti-forensics techniques are designed to prevent, mislead, or interfere with the incident handling process, affecting the collection, preservation, and identification phases of the forensic investigation process. These techniques include methods to erase, encrypt, or alter information, make data recovery difficult, hide data (e.g., steganography), or otherwise obstruct forensic analysis and investigation efforts. Anti-forensics can significantly challenge the efforts of incident responders and forensic investigators in establishing the facts of a security incident or crime.

Incident response orchestration refers to the process and technologies used to coordinate and streamline the response to security incidents. This approach ensures that incident response teams have clear procedures and workflows to follow, enabling them to act swiftly and effectively when dealing with security incidents. By orchestrating the response, organizations can minimize the impact of incidents, ensure consistent and thorough investigation and remediation activities, and improve their overall security posture. Incident response orchestration involves integrating various security tools, automating response actions where possible, and providing a centralized platform for managing incidents.

Phishing emails often share common characteristics designed to manipulate the recipient into taking immediate action. One of the hallmark features is the use of urgency, threatening language, or promising subject lines in the emails. These tactics are intended to create a sense of urgency or fear, compelling the recipient to respond quickly without giving due consideration to the legitimacy of the email. Phishing emails may claim that the recipient's account has been compromised, that they need to confirm personal information immediately, or that they have won a prize. The goal is to trick the recipient into clicking on malicious links, opening attachments, or providing sensitive information.

In the context of incident handling and response (IH&R), the preparation phase is the initial step where teams and resources are organized to effectively respond to potential security incidents. This phase involves building the IH&R team, developing incident response plans and policies, setting up communication channels, and ensuring that the team has the necessary tools and authority to act. James, being assigned to build an IH&R plan and organize his team, is engaging in the preparation step of the incident response process. This foundational step is crucial for ensuring a coordinated and efficient response to incidents when they occur.

In the scenario where your company sells Software as a Service (SaaS) and is hosted on the cloud using it as a Platform as a Service (PaaS), your company is responsible for eradicating malware in your customer's database. This is because, as the SaaS provider, your company manages the software and is responsible for its security and maintenance, including the databases that store customer data. While the PaaS provider is responsible for the underlying infrastructure, platform, and possibly some middleware security aspects, the application layer security, including data and application management, falls to the SaaS provider. Building management would not be involved in digital security matters, and while customers are responsible for their data, the actual software maintenance and security in a SaaS model are the provider's responsibility.

In the risk assessment process, "System characterization" is the initial step where the scope of the assessment is defined. This involves identifying and documenting the boundaries of the IT systems under review, the resources (hardware, software, data, and personnel) that constitute these systems, and any relevant information about their operation and environment. This foundational step is essential for understanding what needs to be protected and forms the basis for subsequent analysis, including identifying vulnerabilities, assessing potential threats, and determining the impact of risks to the organization.

A Trojan, short for Trojan horse, is a type of malicious software that misleads users of its true intent. It disguises itself as a legitimate and useful program, but once executed, it allows unauthorized access to the user's system. Unlike viruses and worms, Trojans do not replicate themselves but can be just as destructive. They are often used to create a backdoor to a computer system, allowing an attacker to gain access to the system or to deliver other malware. Trojans can be used for a variety of purposes, including stealing information, downloading or uploading files, monitoring the user's screen and keyboard, and more. The term "Trojan" comes from the Greek story of the wooden horse that was used to sneak soldiers into the city of Troy, which is analogous to the deceptive nature of this type of malware in cyber security.

Setting up a computer forensics lab involves several critical steps that need to be executed in a logical and efficient order. The correct sequence starts with planning and budgeting (2), as it is essential to understand the scope, resources, and financial commitment required for the lab. The next step involves considering the physical location and structural design (1) to ensure the lab meets operational needs and security requirements. Work area considerations (3) follow, focusing on the layout and functionality of the workspace. Human resource considerations (6) are crucial next, to ensure the lab is staffed with qualified personnel. Physical security recommendations (4) are then implemented to protect the lab and its resources. Finally, forensic lab licensing (5) ensures the lab operates within legal and regulatory frameworks.

Disabling security options such as two-factor authentication (2FA) and CAPTCHA is not a countermeasure to eradicate cloud security incidents. In fact, it is contrary to best security practices. 2FA adds an additional layer of security by requiring two forms of verification before granting access to an account or system. CAPTCHA helps prevent automated attacks by ensuring that the entity accessing the service is human. Both are important security measures that protect against unauthorized access and automated attacks, thereby enhancing cloud security.

The scenario described is characteristic of a Trojan. A Trojan is a type of malware that disguises itself as legitimate software but performs malicious actions once installed. Unlike viruses, which can replicate themselves, or worms, which can spread across networks on their own, Trojans rely on the guise of legitimacy to trick users into initiating their execution. In this case, the user believed they were downloading and installing genuine software, but the reality was that the application contained a Trojan. The malicious code executed upon installation provided unauthorized remote access to the user's computer, which could be used by an attacker to control the system, steal data, install additional malware, or carry out other malicious activities.

Trojans can come in many forms and can be used to achieve a wide range of malicious objectives, making them a versatile and dangerous type of cyber threat. The deceptive nature of Trojans, exploiting the trust users have in what appears to be legitimate software, is what makes them particularly effective and widespread.