Despite being a veteran protocol, New Technology Lan Manager (NTLM) remains one of the most common authentication protocols used in Windows environments. Even though Kerberos offers enhanced security features over NTLM, many systems and functions still depend on NTLM, making it impossible for most organizations to move away from it entirely. Unfortunately, there are a number ... READ MORE
Back to Basics: Brute Forcing Techniques
During an attack, a threat actor can often enumerate leverageable information through open-source intelligence (OSINT) gathering techniques. This can include information on users that are present on the target environment, such as usernames and email addresses. Often, a threat actor can use this information to craft a targeted list of users to facilitate a variety of attack ... READ MORE
2022 Attack Vectors Report
For many years, RSM has made a continuous effort to assist organizations in addressing cybersecurity challenges, provide tools to achieve a desired state of security, and deliver guidance for attack prevention. We perform security penetration testing to simulate attacks on internal networks and closely mimic security breaches within controlled environments. By conducting these ... READ MORE
Back to Basics: Kerberoasting
Welcome back to our "Back to Basics" series, where we provide you with an overview of the bread and butter pentesting techniques that we regularly see compromise networks. In this week's installment, we're looking at Kerberoasting. Kerberoasting is a method to capture hashed passwords using the Kerberos network authentication protocol. This protocol protects network services ... READ MORE
Back to Basics: Microsoft Exploits
Often, software vendors such as Microsoft release security patches for their products. Instead of a full-scale upgrade, patches are smaller, targeted updates that address vulnerabilities discovered in the current version of the product. The vulnerabilities fixed by these patches are often critical issues that can be exploited by attackers to gain access to sensitive information ... READ MORE
CVE 2022 30190 “Follina”
Have you ever had to download a Microsoft Word document from a co-worker, friend, family member? I know I have. Now imagine you think you receive a Word document from your boss titled “New Promotions/Raises”. Without thinking, you go to download and access the file, and then a weird window pops up about Microsoft Windows Diagnostic Tool. The document is blank, which is weird, ... READ MORE
Scam Calls and Manipulation: How to Recognize Suspicious Content
The experience is almost universal—you notice an unknown, but not entirely unfamiliar number flash across your screen during your workday. Because the number shares an area code with your location, you assume that you’re finally receiving a follow-up from your mechanic, or your doctor’s office, or your banker. When you answer, the voice on the other end (often automated) ... READ MORE
2021 Attack Vectors Report
For many years, RSM has made a continuous effort to assist organizations in addressing cybersecurity challenges, provide tools to achieve a desired state of security, and deliver guidance for attack prevention. We perform security penetration testing to simulate attacks on internal networks and closely mimic security breaches within controlled environments. By conducting these ... READ MORE
Identifying Credit Card Skimmers Using Linux’s “strace” Command
RSM US LLP’s (RSM’s) digital forensics and incident response (DFIR) team recently worked a case where a client was informed that their website’s payment platform was suffering from an ongoing attack. Based on customer complaints and common point-of-purchase (CPP) notifications from issuing banks, the client feared that credit card information was being scraped from purchases ... READ MORE
Microsoft Exchange – CVE-2021-26855+
On March 2, 2021, Microsoft released several security updates to address at least seven critical vulnerabilities in supported versions of on-premise Microsoft Exchange Server. These vulnerabilities were observed being used in limited targeted attacks; however, due to the critical nature and publication of these vulnerabilities, Microsoft released guidance that all customers ... READ MORE