This week, we are joined by Jamie Levy, Director of Adversary Tactics at Huntress, who is discussing their work on "Active Exploitation of SonicWall VPNs." Huntress has released an urgent threat advisory on active exploitation of SonicWall VPNs, with attackers bypassing MFA, pivoting to domain controllers, and ultimately deploying Akira ransomware. The campaigns involve techniques such as disabling defenses, clearing logs, credential theft, and Bring Your Own Vulnerable Driver (BYOVD) attacks with legitimate Windows drivers.

Organizations using SonicWall devices are strongly advised to disable SSL VPN access or restrict it via IP allow-listing, rotate credentials, and hunt for indicators of compromise as this remains an ongoing and evolving threat.

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This week, we are joined by Dr. Renée Burton, VP of Infoblox Threat Intel, who is discussing their work on VexTrio, a notorious traffic distribution system (TDS) involved in digital fraud. The VexTrio investigation uncovers a massive global ad fraud and scam operation powered by just 250 virtual machines, tying it directly to named individuals and shell companies across Europe.

The research exposes VexTrio’s full criminal supply chain—including fake apps, dating scams, affiliate networks, and payment processors—alongside a powerful CDN infrastructure ranked among the world’s top 10k domains. It also calls on the adtech industry to take accountability for enabling and sustaining such widespread abuse.

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Bob Rudis, VP Data Science from GreyNoise, is sharing some insights into their work on "Early Warning Signals: When Attacker Behavior Precedes New Vulnerabilities." New research reveals a striking trend: in 80% of cases, spikes in malicious activity against enterprise edge technologies like VPNs and firewalls occurred weeks before related CVEs were disclosed.

The report breaks down this “6-week critical window,” highlighting which vendors show the strongest early-warning patterns and offering tactical steps defenders can take when suspicious spikes emerge. These findings reveal how early attacker activity can be transformed into actionable intelligence, enabling defenders to anticipate and neutralize threats before vulnerabilities are publicly disclosed.

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Nicolás Chiaraviglio, Chief Scientist from Zimperium's zLabs, joins to discuss their work on "Behind Random Words: DoubleTrouble Mobile Banking Trojan Revealed." Zimperium’s zLabs team has been tracking an evolving banker trojan dubbed DoubleTrouble, which has grown more sophisticated in both its distribution and capabilities. Initially spread via phishing sites impersonating European banks, it now uses malicious APKs hosted in Discord channels, and boasts features like screen recording, keylogging, UI overlays, and app blocking—all while heavily abusing Android’s Accessibility Services.

Despite advanced obfuscation and dynamic evasion techniques, Zimperium’s on-device detection tools have successfully identified both known and previously unseen variants, helping protect users from credential theft, financial fraud, and device compromise.

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This week, we are joined by Eric Woodruff, Chief Identity Architect at Semperis, discussing "nOAuth Abuse Alert: Full Account Takeover of Entra Cross-Tenant SaaS Applications". Semperis researchers identified a critical authentication flaw known as nOAuth in 9 out of 104 tested SaaS applications integrated with Microsoft Entra ID.

This low-complexity but severe vulnerability allows attackers with just a user’s email address and access to an Entra tenant to impersonate users, exfiltrate data, and move laterally within affected apps—with no viable defense or detection available to customers. The findings spotlight ongoing risks tied to improper use of email claims in authentication and emphasize the urgent need for SaaS vendors to adopt secure OpenID Connect practices and remediate vulnerable applications.

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Please enjoy this Special Edition episode of the Threat Vector podcast with an update on our previous Muddled Libra coverage.

Muddled Libra is back and more dangerous than ever. In this episode of Threat Vector, David Moulton speaks with Sam Rubin and Kristopher Russo from Unit 42 about the resurgence of the threat group also known as Scattered Spider. They break down the group’s shift to destructive extortion, modular attack teams, and cloud-first tactics. Discover why traditional defenses fail, how attackers now exploit trusted tools, and what forward-leaning security leaders are doing to stay ahead. With real-world case studies, strategic advice, and insights from the front lines, this episode helps defenders understand today’s threat landscape and what’s coming next.

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About Threat Vector

Threat Vector by Palo Alto Networks is your premier podcast for security thought leadership. Join us as we explore pressing cybersecurity threats, robust protection strategies, and the latest industry trends.

The podcast features in-depth discussions with industry leaders, Palo Alto Networks experts, and customers, providing crucial insights for security decision-makers.

Whether you're looking to stay ahead of the curve with innovative solutions or understand the evolving cybersecurity landscape, Threat Vector equips you with the knowledge needed to safeguard your organization.

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Palo Alto Networks enables your team to prevent successful cyberattacks with an automated approach that delivers consistent security across the cloud, network, and mobile. ⁠http://paloaltonetworks.com

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This week, we are pleased to be joined by George Glass, Associate Managing Director of Kroll's Cyber Risk business, as he is discussing their research on Scattered Spider and their targeting of insurance companies. While Scattered Spider has recently turned its attention to the airline industry, George focuses on the broader trend of the group’s industry-by-industry approach and what that means for defenders across sectors.

George and Dave discuss the group’s history, their self-identification as a cartel, and their increasingly aggressive tactics, including the use of fear-based social engineering, physical threats, and the recruitment of insiders at telecom providers. They also examine how organizations—especially those with vulnerabilities similar to past targets—can proactively defend against this threat and prepare an effective response if their industry becomes the next focus.

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Today we are joined by Selena Larson, Threat Researcher at Proofpoint, and co-host of Only Malware in the Building, as she discusses their work on "Amatera Stealer - Rebranded ACR Stealer With Improved Evasion, Sophistication." Proofpoint researchers have identified Amatera Stealer, a rebranded and actively developed malware-as-a-service (MaaS) variant of the former ACR Stealer, featuring advanced evasion techniques like NTSockets for stealthy C2 communication and WoW64 Syscalls to bypass user-mode defenses.

Distributed via ClearFake web injects and the ClickFix technique, Amatera leverages multilayered PowerShell loaders, blockchain-based hosting, and creative social engineering to compromise victims. With enhanced capabilities to steal browser data, crypto wallets, and other sensitive files, Amatera poses a growing threat in the wake of disruptions to competing stealers like Lumma.

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Please enjoy this encore of Research Saturday.

This week we are joined by ⁠Silas Cutler⁠, Principal Security Researcher at ⁠Censys⁠, asking the important question of "Will the Real Volt Typhoon Please Stand Up?" The FBI's disruption of the KV Botnet in December 2023, attributed to the Chinese threat group Volt Typhoon, targeted infected systems but did not affect the botnet's control infrastructure.

Despite law enforcement efforts and technical exposure, the botnet's infrastructure has remained largely stable, with only changes in hosting providers, raising questions about whether another party operates the botnet. Censys scanning data from 2024 shows a shift in the botnet's control servers, indicating a response to disruption attempts, while the botnet's operators have shown limited efforts to obscure their infrastructure.

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This week we are joined by Kyle Lefton, Security Researcher from Akamai, who is diving into their work on "Two Botnets, One Flaw - Mirai Spreads Through Wazuh Vulnerability." Akamai researchers have observed active exploitation of CVE-2025-24016, a critical RCE vulnerability in Wazuh, by two Mirai-based botnets.

The campaigns highlight how quickly attackers are adapting proof-of-concept exploits to spread malware, underscoring the urgency of patching vulnerable systems. One botnet appears to target Italian-speaking users, suggesting regionally tailored operations.

We'd love to hear from you. We're conducting our annual audience survey to learn more about our listeners. We're collecting your insights until August 31, 2025. You can find our survey here.

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