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…
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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….
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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,…
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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…
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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…
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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…
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In this three-part blog post series, we will provide an introduction into what ransomware is, how it works, and how it spreads to systems within an organization. We will also provide examples of different types of ransomware and variation of ransomware tactics. In part two, we will go in-depth to understand the various attack vectors…
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Office 365 is the most popular line of digital services for businesses for a reason, but when it comes to cyberattacks, its ubiquity is creating challenges. If it seems like every week there’s a new headline about a large-scale hacking incident, it’s not a case of rampant fake news. According to the 2018 Symantec Internet Security…
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Organizations are losing thousands—and sometimes millions—of dollars from invoice fraud, which is also known as Business Email Compromise (BEC). At TrustedSec, we have seen a marked uptick in panicked, embarrassed, and/or angry folks reaching out to us for Incident Response and forensics work following a scam. Sometimes, organizations are able to recover some or all…
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In part one of this blog post series, we briefly looked at why IoC threat data enrichment is important, the value of knowing who your enemy is, and the process of turning threat data into threat intelligence. If you haven’t had a chance to read the first part of this series, take a few minutes…
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