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Malware

GuLoader - a highly effective and versatile malware that can evade detection

The content of this post is solely the responsibility of the author. AT&T does not adopt or endorse any of the views, positions, or information provided by the author in this article. This blog was jointly authored with Arjun Patel. GuLoader is a malware downloader that is primarily used for distributing other shellcode and malware such as ransomware and banking Trojans.

Q4 2022 Threat Landscape Report: Tech and Manufacturing Targeted as Ransomware Peaks for 2022

In a year where headlines were dominated by the global economic and geopolitical uncertainty around Russia’s war on Ukraine, 2022 saw a threat landscape that was both volatile and fragmented, largely due to the war. As the year drew to an end, ransomware hit a peak, primarily due to the rise in attacks impacting the manufacturing, health care, technology and telecommunications industries.

8220 Gang Continues to Evolve With Each New Campaign

8220 Gang has been dubbed as a group of low-level script kiddies with an equally disappointing name based on their original use of port 8220 for Command and Control (C2) network communications dating back to 2017. Since an initial Talos report in late 2018, the group has continued to use, learn, and benefit from the efforts of their counterparts in the cryptojacking world.

Royal Ransomware Deep Dive

The threat actor group behind Royal ransomware first appeared in January 2022, pulling together actors previously associated with Roy/Zeon, Conti and TrickBot malware. Originally known as “Zeon” before renaming themselves “Royal” in September 2022, they are not considered a ransomware-as-a-service (RaaS) operation because their coding/infrastructure are private and not made available to outside actors.

Rubrik Brings Security at the Point of Data to Microsoft Azure Stack HCI

Operating in a cloud model means not only being able to access your data anywhere but that your infrastructure is flexible and scalable enough to accommodate demands that change from day to day or sometimes from moment to moment. This is easy enough to achieve in a public cloud, where resources can be made elastic and added and removed dynamically.

HTML Smuggling: The Hidden Threat in Your Inbox

Last October, Trustwave SpiderLabs blogged about the use and prevalence of HTML email attachments to deliver malware and phishing for credentials. The use of HTML smuggling has become more prevalent, and we have since seen various cybercriminal groups utilizing these techniques to distribute malware. HTML smuggling employs HTML5 attributes that can work offline by storing a binary in an immutable blob of data within JavaScript code.

How to Check if a Link is Safe

Clicking on malicious links can lead to compromised accounts and can infect your devices with malware. Learning how to check if a link is safe, before clicking on it, is important to keeping you safe online. You can check if a link is safe by hovering over the link to see if it’s the URL it’s saying it is or by using a URL checker.

Stalkerware Exposed | Cybersecurity Sessions #16 with Martijn Grooten

Our reliance on personal mobile devices leaves us vulnerable to attack; not just from anonymous criminal groups, but in some cases, from those closest to us. Stalkerware, a category of apps designed to secretly monitor the unsuspecting victim whose device they’re installed on, are a growing concern for security and privacy advocates, as well as law enforcement agencies.