KEY TAKEAWAYS Volexity discovered and reported a vulnerability in Fortinet's Windows VPN client, FortiClient, where user credentials remain in process memory after a user authenticates to the VPN. This vulnerability was abused by BrazenBamboo in their DEEPDATA malware. BrazenBamboo is the threat actor behind development of the LIGHTSPY malware family. LIGHTSPY variants have been discovered for all major operating systems, including iOS, and Volexity has recently discovered a new Windows variant. In July 2024, Volexity identified exploitation of a zero-day credential disclosure vulnerability in Fortinet’s Windows VPN client that allowed credentials to be stolen from the memory of the client’s process. This vulnerability was discovered while analyzing a recent sample of the DEEPDATA malware family. DEEPDATA is a modular post-exploitation tool for the Windows operating system that is used to gather a wide range of information from target devices. Analysis of the sample revealed a plugin that was designed to […]

We discovered a new malware, which we named “OpcJacker” (due to its opcode configuration design and its cryptocurrency hijacking ability), that has been distributed in the wild since the second half of 2022.

Summary Three key takeaways from our analysis of Vidar infrastructure: Russian VPN gateways are potentially providing anonymity for Vidar operators / customers, making it more challenging for analysts to have a complete overview of this threat. These gateways now appear to be migrating to Tor. Vidar operators appear to be expanding their infrastructure, so analysts need to keep them in their sights. We expect a new wave of customers and as a result, an increase of campaigns in the upcoming weeks

Pulse Connect Secure is a low-cost and widely-deployed SSL VPN solution for remote and mobile users. Over the years, researchers have found several significant vulnerabilities in the server software, some even resulting in the active exploitation of critical infrastructure by malicious threat actors. In April of 2021, CISA released a report detailing some of these activities, which included exploiting several unknown (at the time) vulnerabilities and resulted in swift action from Ivanti, the Pulse Connect Secure software developer.

ISPs are quietly distributing "netflow" data that can, among other things, trace traffic through VPNs.

ISPs are quietly distributing "netflow" data that can, among other things, trace traffic through VPNs.