Become The Malware Analyst Series: Malicious Code Extraction and Deobfuscation

July 7, 2020

In this video, Senior Incident Response & Research Consultant Scott Nusbaum demonstrates a method to extract and deobfuscate code from a malicious document. Upon rendering the code readable, Nusbaum works to gain an understanding of the goals the malware was attempting to accomplish and the processes by which it undertook that effort. This video is…

Read

Are You Looking for Ants or Termites?

July 1, 2020

Over the last several months, I’ve noticed something when discussing Incident Response (IR) with clients. There is often confusion between the expectation and reality concerning the end results of an IR investigation. My goal here is to clarify and set those expectations, and to show how Threat Hunting factors in. When TrustedSec gets called to…

Read

Adventures in Phishing Email Analysis

June 18, 2020

Opening Phishing attacks are a daily threat to all organizations and unfortunately, they are one of the hardest threats to protect against. No matter how many defensive layers an organization has put in place following best practice defense-in-depth design, it only takes one (1) user to click on that malicious link or open that weaponized…

Read

Access Locked Files With TScopy

June 11, 2020

Wanted: TScopy Tool Testers GitHub Repo https://github.com/trustedsec/tscopy Introducing TScopy It is a requirement during an Incident Response (IR) engagement to have the ability to analyze files on the filesystem. Sometimes these files are locked by the operating system (OS) because they are in use, which is particularly frustrating with event logs and registry hives. TScopy…

Read

Threat Hunting – Outbound RDP Surprises

March 10, 2020

Opener Through threat hunting, an organization can break away from a reactive approach to identifying incidents and evolve into a proactive operation that actively looks for incidents. The high-level threat hunting pipeline consists of taking a hypothesis built around threats specific to the organization, lab testing and validating the hypothesis, implementing security operation detection, testing…

Read

Detecting CVE-2020-0688 Remote Code Execution Vulnerability on Microsoft Exchange Server

February 28, 2020

Microsoft recently released a patch for all versions of the Microsoft Exchange server. This patch fixes a Remote Code Execution flaw that allows an attacker to send a specially crafted payload to the server and have it execute an embedded command. Researchers released proof of concept (POC) exploits for this vulnerability on February 24, 2020….

Read

NetScaler Honeypot

January 13, 2020

The Citrix NetScaler remote code execution vulnerability (CVE-2019-19781) has been a pretty popular topic over the last few weeks. Once public exploits of the vulnerability started to appear in the wild, TrustedSec deployed a Citrix NetScaler honeypot. We did not have to wait long for the attacks to begin. Less than 24 hours after deployment,…

Read

NetScaler Remote Code Execution Forensics

January 10, 2020

With the recent Citrix ADC (NetScaler) CVE-2019-19781 Remote Code Execution vulnerability, the TrustedSec Incident Response team has been working closely with our offensive and research teams as they created a working exploit. This has allowed us to create a list of locations and indicators to search for on potentially compromised Citrix ADC hosts. Based on…

Read

Incident Response Ransomware Series – Part 3

November 1, 2019

So far in this series, we have looked at what ransomware is, what it does after it has compromised a system, and what organizations can do to detect and prevent ransomware. (Catch up with Part 1 & Part 2 before continuing!) However, that is only half the story. Organizations need to assume that they will…

Read

Incident Response Ransomware Series – Part 2

October 30, 2019

Opening In part one of this blog post series, we provided an introduction into what ransomware is and how it works. We also provided examples of different types of ransomware, variation of ransomware tactics, and identified that ransomware delivery is traditionally accompanied by other malware to assist in lateral movement and deployment. If you haven’t…

Read
  • Browse by Category

  • Clear Form