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Luke Leal

About Luke Leal

Luke Leal is a member of the Malware Research team and joined the company in 2015. Luke's main responsibilities include threat research and malware analysis, which is used to improve our tools. His professional experience covers over eight years of deobfuscating malware code and using unique data from it to help in correlating patterns. When he’s not researching infosec issues or working on websites, you might find Luke traveling and learning about new things. Connect with him on Twitter.

Trojan Spyware and BEC Attacks

March 3, 2021Luke Leal

Trojan Spyware and BEC Attacks

When it comes to an organization’s security, business email compromise (BEC) attacks are a big problem. One primary reason impacts are so significant is that attacks often use a human victim to authorize a fraudulent transaction to bypass existing security controls that would normally be…

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Backdoor SQL Trigger

February 25, 2021Luke Leal

SQL Triggers in Website Backdoors

Over the past year, there’s been an increasing trend of WordPress malware using SQL triggers to hide malicious SQL queries within compromised databases. These queries inject an admin level user…

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Phishing Campaign

January 26, 2021Luke Leal

Phishing & Malspam with Leaf PHPMailer

It’s common knowledge that attackers often use email as a delivery mechanism for their malicious activity — which can range from enticing victims to click a phishing URL or download…

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Labs Note

January 21, 2021Luke Leal

Magento PHP Injection Loads JavaScript Skimmer

A Magento website owner was concerned about malware and reached out to our team for assistance. Upon investigation, we found the website contained a PHP injection in one of the…

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Phishing Campaign

January 14, 2021Luke Leal

Real-Time Phishing Kit Targets Brazilian Central Bank

We recently found an interesting phishing kit on a compromised website that has QR code capabilities, along with the ability to control the phishing page in real time. What our…

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Troldesh Ransomware Dropper

January 12, 2021Luke Leal

Obfuscation Techniques in Ransomweb “Ransomware”

As vital assets for many business operations, websites and their hosting servers are often the target of ransomware attacks — and if they get taken offline, this can cause major…

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January 7, 2021Luke Leal

Evaluating Cookies to Hide Backdoors

Identifying website backdoors is not always an easy task. Since a backdoors primary function is to conceal itself while providing unauthorized access, they are often developed using a variety of…

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Labs Note

December 4, 2020Luke Leal

Obfuscation Techniques in MARIJUANA Shell “Bypass”

Attackers are always trying to come up with new ways to evade detection from the wide range of security controls available for web applications. This also extends to malware like…

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Labs Note

December 1, 2020Luke Leal

“Free” Symchanger Malware Tricks Users Into Installing Backdoor

In a previous post, I discussed how attackers can trick website owners into installing malware onto a website — granting the attacker the same unauthorized access as if they had…

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Labs Note

November 26, 2020Luke Leal

Hackers Love Expired Domains

Sometimes, website owners no longer want to own a domain name and they allow it to expire without attempting to renew it. This happens all the time and is totally…

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Labs Note

November 23, 2020Luke Leal

Hidden SEO Spam Link Injections on WordPress Sites

Often when a website is injected with SEO spam, the owner is completely unaware of the issue until they begin to receive warnings from search engines or blacklists. This is…

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