WEBINAR | From Deal to Defense: Unifying Cybersecurity Post-M&A
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GreyMatter Phishing Analyzer removes the abuse mailbox management by automating the DIR process for you.
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ReliaQuest GreyMatter is a security operations platform built on an open XDR architecture and designed to help security teams increase visibility, reduce complexity, and manage risk across their security tools, including on-premises, clouds, networks, and endpoints.
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Get the latest threat analysis from the ReliaQuest Threat Research Team. ReliaQuest ShadowTalk Weekly podcast featuring discussions on the latest cybersecurity news and threat research.
ReliaQuest's ShadowTalk is a weekly podcast featuring discussions on the latest cybersecurity news and threat research. ShadowTalk's hosts come from threat intelligence, threat hunting, security research, and leadership backgrounds providing practical perspectives on the week's top cybersecurity stories.
February 20, 2024
We bring our best attitude, energy and effort to everything we do, every day, to make security possible.
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No Show Dogs Podcast
Mental Performance Coaches Derin McMains and Dr. Nicole Detling interview world-class performers across multiple industries.
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A Mindset Like No Other in the Industry
Many companies tout their cultures; at ReliaQuest, we share a mindset. We focus on four values every day to make security possible: being accountable, helpful, adaptable, and focused. These values drive development of our platform, relationships with our customers and partners, and further the ReliaQuest promise of security confidence across our customers and our own teams.
To coincide with our new, globally available GreyMatter Phishing Analyzer (GMPA) product—which will enable a much more efficient method of automating analysis of potential malicious emails—we’re starting a new series in which the ReliaQuest Photon Threat Research team will highlight several of the most common methods threat actors are using to bypass traditional email security controls to compromise targets.
HTML smuggling is a commonly used technique associated with a wide variety of threat groups, including cybercriminals and nation-state actors. This is not a novel technique; however, it has become more commonplace following Microsoft’s decision to block macros in Office documents by default. Many would suggest this decision was overdue; however, threat actors, rather unsurprisingly, quickly adapted.
A good example of this can be seen in the screenshot below (Figure 2), which was recently delivered to a ReliaQuest client mailbox. This HTML file requests that the user interact with its content, using a theme of “Remittance” as the bait.
This then redirected the user to a convincing spoofed Microsoft website (see Figure 3 below), which in this case was almost certainly used to harvest credentials. As we previously observed during our research report on account takeover, credential harvesting is often pretty simple, but it works.
There are several steps you can take to minimize the risks associated with HTML smuggling.
GreyMatter Phishing Analyzer takes the burden of monitoring abuse mailboxes off your plate, and it provides the ability to identify and remove email threats from inboxes before they can cause damage. You don’t want the HTML smuggling technique to be the beachhead that allows initial access into your environment.