A large-scale "QakNote" attack deploys malicious .one files as a novel infection vector

Threat actors are taking advantage of Microsoft OneNote's ability to embed files and use social engineering techniques, such as phishing emails and lures inside the OneNote document, to get unsuspecting users to download and open malicious files.

SEO poisoning is gaining momentum as threat actors leverage malicious ads to deliver malware through web browser searches.

At the end of November 2022, OpenAI released ChatGPT, the new interface for its Large Language Model (LLM), which instantly created a flurry of interest in AI and its possible uses. However, ChatGPT has also added some spice to the modern cyber threat landscape as it quickly became apparent that code generation can help less-skilled threat actors effortlessly launch cyberattacks. In Check Point Research’s (CPR) previous blog, we described how ChatGPT successfully conducted a full infection flow, from creating a convincing spear-phishing email to running a reverse shell, capable of accepting commands in English. The question at hand is whether this is just a hypothetical threat or if there are already threat actors using OpenAI technologies for malicious purposes. CPR’s analysis of several major underground hacking communities shows that there are already first instances of cybercriminals using OpenAI to develop malicious tools. As we suspected, some of the cases clearly showed that many cybercriminals using OpenAI have no development skills at all. Although the tools that we present in this report are pretty basic, it’s only a matter of time until more sophisticated threat actors enhance the way they use AI-based tools for bad.

As more and more users adopt new versions of Microsoft Office, it is likely that threat actors will turn away from VBA-based malicious documents to other formats such as XLLs or rely on exploiting newly discovered vulnerabilities to launch malicious code.

A common theme we've noticed in the last few months consists of malicious apps distributed directly from the Google Play Store.

Learn how attackers are redirecting WordPress website visitors to fake Q&A sites via ois[.]is. Nearly 15,000 websites affected by this malware so far.

The Zimperium zLabs team recently discovered a malicious browser extension, originally called Cloud9, which not only steals the information available during the browser session but can also install malware on a user's device and subsequently assume control of the entire device. In this blog, we will take a deeper look into this malicious browser extension.

A report shows four Bluetooth-centered apps by the same developer have been downloaded 1 million times combined while containing malicious code.

The “Dormant Colors” is yet another vast campaign of malicious extensions with millions of active installations worldwide, this time with a color-related theme and full of deception all through the chain. It starts with the trickery malvertising campaign, continues with a crafty novel way to side-load the real malicious code without anyone noticing (until now!), and finally with stealing not only your searches and browsing data, but also affiliation to 10,000 targeted sites — a capability that is easily leveraged for targeted spear phishing, account takeover and credential extraction — all using this powerful network of millions of infected computers worldwide!

The malicious version of YoWhatsApp messenger, containing Triada trojan, was spreading through ads in the popular Snaptube app and the Vidmate app's internal store.

A few months ago, we blogged about malicious extensions redirecting users to phishing sites and inserting affiliate IDs into cookies of eCommerce sites. Since that time, we have investigated several other malicious extensions and discovered 5 extensions with a total install base of over 1,400,000 "...the extensions also track the user’s browsing activity."

This investigation report contains an applications analysis of 7 different Apple developer accounts (identified so far — maybe there are…

A vulnerability in the Mac Zoom Client allows any malicious website to enable your camera without your permission. The flaw potentially exposes up to 750,000 companies around the world that use Zoom to conduct day-to-day business.

Software developers using GitLab CI are being targeted with malware through a typosquatting attack, putting downstream users at risk.