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Cybersecurity researchers are warning of a "notable increase" in threat actor activity actively exploiting a now-patched flaw in Apache ActiveMQ to deliver the Godzilla web shell on compromised hosts. "The web shells are concealed within an unknown binary format and are designed to evade security and signature-based scanners," Trustwave  said . "Notably, despite the binary's unknown file format, ActiveMQ's JSP engine continues to compile and execute the web shell." CVE-2023-46604 (CVSS score: 10.0) refers to a  severe vulnerability  in Apache ActiveMQ that enables remote code execution. Since its public disclosure in late October 2023, it has come under active exploitation by multiple adversaries to deploy  ransomware ,  rootkits, cryptocurrency miners , and  DDoS botnets . In the latest intrusion set observed by Trustwave, susceptible instances have been targeted by JSP-based web shells that are planted within the "admin" folder ...

An advanced China-nexus cyber espionage group previously linked to the exploitation of security flaws in VMware and Fortinet appliances has been attributed to the abuse of a critical vulnerability in VMware vCenter Server as a zero-day since late 2021. "UNC3886 has a track record of utilizing zero-day vulnerabilities to complete their mission without being detected, and this latest example further demonstrates their capabilities," Google-owned Mandiant said in a Friday report. The vulnerability in question is CVE-2023-34048 (CVSS score: 9.8), an out-of-bounds write that could be put to use by a malicious actor with network access to vCenter Server to achieve remote code execution. It was fixed by the Broadcom-owned company on October 24, 2023. The virtualization services provider, earlier this week, updated its advisory to acknowledge that "exploitation of CVE-2023-34048 has occurred in the wild." UNC3886 first came to light in September 2022 when it was ...

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Friday issued an  emergency directive  urging Federal Civilian Executive Branch (FCEB) agencies to implement mitigations against two actively exploited zero-day flaws in Ivanti Connect Secure (ICS) and Ivanti Policy Secure (IPS) products. The development arrives as the  vulnerabilities  – an authentication bypass (CVE-2023-46805) and a code injection bug (CVE-2024-21887) – have come under widespread exploitation by multiple threat actors. The flaws allow a malicious actor to craft malicious requests and execute arbitrary commands on the system. The U.S. company  acknowledged  in an advisory that it has witnessed a "sharp increase in threat actor activity" starting on January 11, 2024, after the shortcomings were publicly disclosed. "Successful exploitation of the vulnerabilities in these affected products allows a malicious threat actor to move laterally, perform data exfiltration, and...

I had the honor of hosting the first episode of the Xposure Podcast live from Xposure Summit 2025. And I couldn't have asked for a better kickoff panel: three cybersecurity leaders who don't just talk security, they live it. Let me introduce them. Alex Delay , CISO at IDB Bank, knows what it means to defend a highly regulated environment. Ben Mead , Director of Cybersecurity at Avidity Biosciences, brings a forward-thinking security perspective that reflects the innovation behind Avidity's targeted RNA therapeutics. Last but not least, Michael Francess , Director of Cybersecurity Advanced Threat at Wyndham Hotels and Resorts, leads the charge in protecting the franchise. Each brought a unique vantage point to a common challenge: applying Continuous Threat Exposure Management (CTEM) to complex production environments. Gartner made waves in 2023 with a bold prediction: organizations that prioritize CTEM will be three times less likely to be breached by 2026. But here's the kicker -...

Microsoft on Friday revealed that it was the target of a nation-state attack on its corporate systems that resulted in the theft of emails and attachments from senior executives and other individuals in the company's cybersecurity and legal departments. The Windows maker attributed the attack to a Russian advanced persistent threat (APT) group it tracks as  Midnight Blizzard  (formerly Nobelium), which is also known as APT29, BlueBravo, Cloaked Ursa, Cozy Bear, and The Dukes. It further said that it immediately took steps to investigate, disrupt, and mitigate the malicious activity upon discovery on January 12, 2024. The campaign is estimated to have commenced in late November 2023. "The threat actor used a  password spray attack  to compromise a legacy non-production test tenant account and gain a foothold, and then used the account's permissions to access a very small percentage of Microsoft corporate email accounts, including members of our senior leadership ...

The threat actor tracked as  TA866  has resurfaced after a nine-month hiatus with a new large-volume phishing campaign to deliver known malware families such as WasabiSeed and Screenshotter. The campaign, observed earlier this month and blocked by Proofpoint on January 11, 2024, involved sending thousands of invoice-themed emails targeting North America bearing decoy PDF files. "The PDFs contained OneDrive URLs that, if clicked, initiated a multi-step infection chain eventually leading to the malware payload, a variant of the WasabiSeed and Screenshotter custom toolset," the enterprise security firm  said . TA866 was  first documented  by the company in February 2023, attributing it to a campaign named Screentime that distributed WasabiSeed, a Visual Basic script dropper that's used to download Screenshotter, which is capable of taking screenshots of the victim's desktop at regular intervals of time and exfiltrating that data to an actor-controlled domain. ...

Pirated applications targeting Apple macOS users have been observed containing a backdoor capable of granting attackers remote control to infected machines. "These applications are being hosted on Chinese pirating websites in order to gain victims," Jamf Threat Labs researchers Ferdous Saljooki and Jaron Bradley  said . "Once detonated, the malware will download and execute multiple payloads in the background in order to secretly compromise the victim's machine." The backdoored disk image (DMG) files, which have been modified to establish communications with actor-controlled infrastructure, include legitimate software like Navicat Premium, UltraEdit, FinalShell, SecureCRT, and Microsoft Remote Desktop. The unsigned applications, besides being hosted on a Chinese website named macyy[.]cn, incorporate a dropper component called "dylib" that's executed every time the application is opened. The dropper then acts as a conduit to fetch a backdoor ...

In the current digital landscape, data has emerged as a crucial asset for organizations, akin to currency. It's the lifeblood of any organization in today's interconnected and digital world. Thus, safeguarding the data is of paramount importance. Its importance is magnified in on-premises Exchange Server environments where vital business communication and emails are stored and managed.  In this article, you will learn about the evolving threats of data loss, the shift in responsibilities of administrators, and key backup and recovery strategies for preventing data loss in the Exchange Server environment. Data Loss Scenarios in Exchange Servers Data loss in on-premises Exchange Server environment has become increasingly common. Cybersecurity threats, like ransomware attacks, have emerged as a significant cause of data loss in recent years, with many financially motivated threat actors increasingly targeting the vulnerabilities in Exchange Servers. These attackers try to exploit ...

A malicious package uploaded to the npm registry has been found deploying a sophisticated remote access trojan on compromised Windows machines. The package, named " oscompatible ," was published on January 9, 2024, attracting a total of 380 downloads before it was taken down. oscompatible included a "few strange binaries," according to software supply chain security firm Phylum, including a single executable file, a dynamic-link library (DLL) and an encrypted DAT file, alongside a JavaScript file. This JavaScript file ("index.js") executes an "autorun.bat" batch script but only after running a compatibility check to determine if the target machine runs on Microsoft Windows. If the platform is not Windows, it displays an error message to the user, stating the script is running on Linux or an unrecognized operating system, urging them to run it on "Windows Server OS." The batch script, for its part, verifies if it has admin privil...

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Thursday  added  a now-patched critical flaw impacting Ivanti Endpoint Manager Mobile (EPMM) and MobileIron Core to its Known Exploited Vulnerabilities ( KEV ) catalog, stating it's being actively exploited in the wild. The vulnerability in question is  CVE-2023-35082  (CVSS score: 9.8), an authentication bypass that's a patch bypass for another flaw in the same solution tracked as CVE-2023-35078 (CVSS score: 10.0), which was actively exploited in attacks targeted Norwegian government entities as a zero-day in April 2023. "If exploited, this vulnerability enables an unauthorized, remote (internet-facing) actor to potentially access users' personally identifiable information and make limited changes to the server," Ivanti  noted  in August 2023. All versions of Ivanti Endpoint Manager Mobile (EPMM) 11.10, 11.9 and 11.8, and MobileIron Core 11.7 and below are impacted by the vulnerabilit...

Vulnerable Docker services are being targeted by a novel campaign in which the threat actors are deploying XMRig cryptocurrency miner as well as the 9Hits Viewer software as part of a multi-pronged monetization strategy. "This is the first documented case of malware deploying the 9Hits application as a payload," cloud security firm Cado said , adding the development is a sign that adversaries are always on the lookout for diversifying their strategies to make money off compromised hosts. 9Hits advertises itself as a "unique web traffic solution" and an "automatic traffic exchange" that allows members of the service to drive traffic to their sites in exchange for purchasing credits. This is accomplished by means of a software called 9Hits Viewer, which runs a headless Chrome browser instance to visit websites requested by other members, for which they earn credits to pay for generating traffic to their sites. The exact method used to spread the malwa...

The Russia-linked threat actor known as COLDRIVER has been observed evolving its tradecraft to go beyond credential harvesting to deliver its first-ever custom malware written in the Rust programming language. Google's Threat Analysis Group (TAG), which shared details of the latest activity, said the attack chains leverage PDFs as decoy documents to trigger the infection sequence. The lures are sent from impersonation accounts. COLDRIVER, also known by the names Blue Callisto, BlueCharlie (or TAG-53), Calisto (alternately spelled Callisto), Dancing Salome, Gossamer Bear, Star Blizzard (formerly SEABORGIUM), TA446, and UNC4057, is known to be active since 2019, targeting a wide range of sectors. This includes academia, defense, governmental organizations, NGOs, think tanks, political outfits, and, recently, defense-industrial targets and energy facilities. "Targets in the U.K. and U.S. appear to have been most affected by Star Blizzard activity, however activity has al...