Afleveringen
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This week, we’re diving into how to triage for PSEXEC evidence. PSEXEC leaves traces on both the source and target systems, making it essential to identify artifacts on each to determine whether a system was used as an attacker’s tool or was the target of an attack. While PSEXEC has somewhat fallen out of favor due to increased use of PowerShell for similar activities, it remains a commonly abused utility among attackers. In this episode, we’ll break down the key artifacts and methodologies for effective triage.
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Understanding how to search for executables is a critical skill in computer forensics. There are major differences in how executables are handled between Windows and Linux systems, so techniques that work on Windows won’t always translate effectively to Linux. In this episode, I’ll break down some triage techniques to help you quickly identify suspicious executables on Linux systems.
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Welcome to today’s episode! We’re diving into network triage, focusing specifically on listening ports. While we often look for active connections, identifying suspicious services listening on a port can be equally crucial in your investigation. It’s essential to gather this information for both current, real-time data and historical analysis, providing a more complete view of network activity.
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In this episode, we’ll dive into two essential forensic artifacts in Windows: shellbags and the Program Compatibility Assistant (PCA). Shell bags provide valuable evidence of file and folder access, offering insights into user activity and file navigation. We’ll also explore PCA, which can reveal important information about file execution history. Together, these artifacts play a crucial role in uncovering key forensic details during investigations.
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The Linux subsystem for Windows, create both opportunity and challenges for forensic analysts. It makes Windows an excellent platform for multi platform forensic analysis tasks, allowing it to take advantage of the many Linux tools available. The challenges are foreseeable, you have Linux artifacts, now commingled on a Windows platform, which makes forensic analysis that much more difficult when examining such a system as evidence. This week I'm going to break down the Linux subsystems for forensic investigators
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In this episode, we’ll explore the fundamentals of network triage, focusing on the key aspects of network traffic that are central to many investigations. Additionally, we’ll discuss some of the essential tools you can use to analyze and manage network data effectively.
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Today, we’re going to explore how to handle a critical security event: Unauthorized Modification of Information. This type of event occurs when a user alters information in a system—whether it’s an application, database, website, server, or configuration files—without prior authorization. These modifications can range from impersonation and unauthorized system updates to more sophisticated techniques such as SQL injections, privilege escalations, and configuration file tampering.
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This week I talk about the attack methods being used to bypass MFA. We'll learn about real-world cases where MFA was circumvented, and discover best practices to strengthen defenses against these types of attacks...
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In today’s episode, we’ll focus on startup folders, which are perhaps the easiest to triage among all persistence mechanisms. But before diving in, let’s recap the journey so far to underscore the importance of a comprehensive approach rather than a one-off tactic. Each triage area we've covered plays a crucial role in identifying and stopping attacks...
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In 2024, AI has not only revolutionized how we defend against cyber threats but also how those threats are being carried out. We'll explore how AI is enabling faster, more efficient security incident responses, with real-world examples of its application in automated threat detection and response, advanced forensics, and more. But with every technological leap forward, there's a dark side and attackers are harnessing AI to orchestrate sophisticated attacks...
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SQL injection poses significant risks by enabling attackers to access sensitive metadata, execute dynamic SQL commands, and alter system parameters. These actions can lead to unauthorized data access and system disruptions, especially if attackers gain elevated privileges. This week I'm talking about SQL attack patterns from a triage point of view to help you detect such activity when doing log analysis...
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I decided to talk this week about the Importance of Secure Coding Knowledge for Security Incident Response Investigations. Knowing secure coding principles helps identify the root causes of vulnerabilities and recognize attack patterns. It facilitates effective communication and collaboration with developers, ensuring accurate incident reports and actionable recommendations. Secure coding knowledge enhances forensic analysis by aiding in code reviews and log analysis to detect anomalies. It also allows responders to suggest mitigation strategies and improve the security posture of applications. Ultimately, this knowledge leads...
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This week, we're covering zero-day vulnerability response from a Digital Forensics and Incident Response professional's perspective. In our roles, we often get involved in various tasks that require a security mindset, and one critical task is responding to zero-day vulnerabilities. To provide a real-world context, we'll integrate the recently disclosed zero-day exploit "Copy2Pwn" (CVE-2024-38213) and discuss the specific forensic artifacts and methods used to achieve the objectives of a DFIR response.
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Welcome to this week’s session, where we’ll delve into web shell forensics—an ever-critical topic in incident response investigations and threat-hunting strategies. Today, I’ll provide a breakdown that includes the latest developments, detailed triage techniques, and practical examples of what to look for during your investigations:
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Rootkits are hard to detect because they employ advanced stealth techniques to hide their presence. They can conceal processes, files, and network activities by altering system calls and kernel data structures. The deep system knowledge and specialized tools required for low-level analysis make rootkit detection complex and resource-intensive. Limited visibility of standard security tools further complicates the identification of rootkits. However, This week I'm going to talk about how to identify root kits on a Linux systems using only the command line.
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In previous episodes, we covered techniques for examining the Windows Registry, a critical component in identifying persistence mechanisms. We'll explore the registry but shift our focus to registry modification events as reported by Windows event logs
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Bash history's forensic value lies in its ability to answer diverse investigative questions, making it a cornerstone artifact for Linux systems. It aids in triaging lateral movement, identifying reconnaissance activities, and detecting attempts at establishing persistence. This underscores the importance of structuring triage tasks around specific investigative questions, facilitating focused analysis amidst potentially extensive Bash history records...
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The UserAssist key is a Windows Registry artifact that logs details about user activity, such as recently accessed programs and files. It encodes information on the frequency and last access time of items launched via Windows Explorer. This helps investigators understand user behavior and timeline of actions on a system, providing evidence of program execution and file access...
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Every incident response outfit should have a set of guidelines for their team which outlines the standard actions or common considerations for security investigations. In this episode, I highlight some of the key points for security teams with a special focus on initial actions which typically set the tone for success during the subsequent investigation.
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Understanding the different types of databases is important for security incident response investigations, as databases are often targeted by attackers seeking sensitive information. Each database type—relational, NoSQL, in-memory, and cloud-based—has unique structures, query languages, and security mechanisms. Familiarity with these variations enables investigators to effectively...
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