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A new ransomware-as-service (RaaS) operation called MichaelKors has become the latest file-encrypting malware to target Linux and  VMware ESXi systems  as of April 2023. The development points to cybercriminal actors increasingly setting their eyes on the ESXi, cybersecurity firm CrowdStrike said in a report shared with The Hacker News. "This trend is especially noteworthy given the fact that ESXi, by design, does not support third-party agents or AV software," the company said. "In fact, VMware goes as far as to claim it's not required. This, combined with the popularity of ESXi as a widespread and popular virtualization and management system, makes the hypervisor a highly attractive target for modern adversaries." The  targeting of VMware ESXi hypervisors  with ransomware to scale such campaigns is a technique known as  hypervisor jackpotting . Over the years, the approach has been adopted by several ransomware groups, including Royal. What's more...

Poorly managed Microsoft SQL (MS SQL) servers are the target of a new campaign that's designed to propagate a category of malware called  CLR SqlShell  that ultimately facilitates the deployment of cryptocurrency miners and ransomware. "Similar to web shell, which can be installed on web servers, SqlShell is a malware strain that supports various features after being installed on an MS SQL server, such as executing commands from threat actors and carrying out all sorts of malicious behavior," AhnLab Security Emergency response Center (ASEC)  said  in a report published last week. A stored procedure is a subroutine that contains a set of Structured Query Language (SQL) statements for use across multiple programs in a relational database management system (RDBMS). CLR (short for common language runtime) stored procedures – available in SQL Server 2005 and later – refer to  stored procedures  that are written in a .NET language such as C# or Visual Basic. ...

A former employee of Ubiquiti has been  sentenced  to six years in jail after he pleaded guilty to posing as an anonymous hacker and a whistleblower in an attempt to extort almost $2 million worth of cryptocurrency while working at the company. Nickolas Sharp, 37, was arrested in December 2021 for using his insider access as a senior developer to steal confidential data and sending an anonymous email asking the network technology provider to pay 50 bitcoin (about $2 million at the time) in exchange for the siphoned information. Ubiquiti, however, didn't yield to the ransom attempt and instead looped in law enforcement, which eventually identified Sharp as the hacker after tracing a VPN connection to a Surfshark account purchased with his PayPal account. "Sharp repeatedly misused his administrative access to download gigabytes of confidential data from his employer," the U.S. Justice Department said, adding he "modified session file names to attempt to make it ap...

A new phishing-as-a-service (PhaaS or PaaS) platform named  Greatness  has been leveraged by cybercriminals to target business users of the Microsoft 365 cloud service since at least mid-2022, effectively lowering the bar to entry for phishing attacks. "Greatness, for now, is only focused on Microsoft 365 phishing pages, providing its affiliates with an attachment and link builder that creates highly convincing decoy and login pages," Cisco Talos researcher Tiago Pereira  said . "It contains features such as having the victim's email address pre-filled and displaying their appropriate company logo and background image, extracted from the target organization's real Microsoft 365 login page." Campaigns involving Greatness have mainly manufacturing, health care, and technology entities located in the U.S., the U.K., Australia, South Africa, and Canada, with a spike in activity detected in December 2022 and March 2023. Phishing kits like Greatness offer t...

Cybersecurity researchers have discovered an ongoing phishing campaign that makes use of a unique attack chain to deliver the  XWorm malware  on targeted systems. Securonix, which is tracking the activity cluster under the name  MEME#4CHAN , said some of the attacks have primarily targeted manufacturing firms and healthcare clinics located in Germany. "The attack campaign has been leveraging rather unusual meme-filled PowerShell code, followed by a heavily obfuscated XWorm payload to infect its victims," security researchers Den Iuzvyk, Tim Peck, and Oleg Kolesnikov said in a new analysis shared with The Hacker News. The report builds on  recent findings  from Elastic Security Labs, which revealed the threat actor's reservation-themed lures to deceive victims into opening malicious documents capable of delivering XWorm and Agent Tesla payloads. The attacks begin with phishing attacks to distribute decoy Microsoft Word documents that, instead of using macr...

As many as five security flaws have been disclosed in Netgear RAX30 routers that could be chained to bypass authentication and achieve remote code execution. "Successful exploits could allow attackers to monitor users' internet activity, hijack internet connections, and redirect traffic to malicious websites or inject malware into network traffic," Claroty security researcher Uri Katz  said  in a report. Additionally, a network-adjacent threat actor could also weaponize the flaws to access and control networked smart devices like security cameras, thermostats, smart locks; tamper with router settings, and even use a compromised network to launch attacks against other devices or networks. The list of flaws, which were  demonstrated  at the Pwn2Own hacking competition held at Toronto in December 2022, is as follows - CVE-2023-27357 (CVSS score: 6.5) - Missing Authentication Information Disclosure Vulnerability CVE-2023-27368 (CVSS score: 8.8) - Stack-based B...

A previously undocumented and mostly undetected variant of a Linux backdoor called  BPFDoor  has been spotted in the wild, cybersecurity firm Deep Instinct said in a technical report published this week. " BPFDoor  retains its reputation as an extremely stealthy and difficult-to-detect malware with this latest iteration," security researchers Shaul Vilkomir-Preisman and Eliran Nissan said . BPFDoor (aka JustForFun), first documented by  PwC  and  Elastic Security Labs  in May 2022, is a passive Linux backdoor associated with a Chinese threat actor called  Red Menshen (aka  DecisiveArchitect  or Red Dev 18), which is known to single out telecom providers across the Middle East and Asia since at least 2021. The malware is specifically geared towards  establishing persistent remote access  to compromised target environments for extended periods of time, with evidence pointing to the hacking crew operating the backdoor undetec...

In today's interconnected world, where organisations regularly exchange sensitive information with customers, partners and employees, secure collaboration has become increasingly vital. However, collaboration can pose a security risk if not managed properly. To ensure that collaboration remains secure, organisations need to take steps to protect their data. Since collaborating is essential for almost any team to succeed, shouldn't you be able to do it securely? Whether you're sharing a Wi-Fi password, a social media account, or the passwords to a financial account, you deserve peace of mind. The risks of not protecting your sensitive data can be disastrous, from data breaches and reputational damage to legal ramifications and financial loss. But let's face it: Secure collaboration can be a real nightmare. Challenges of Secure Collaboration and Password Sharing It's another day in the office, and your team needs to share a ridiculous amount of sensitive informati...

U.S. cybersecurity and intelligence agencies have warned of attacks carried out by a threat actor known as the  Bl00dy Ransomware Gang  that attempt to exploit vulnerable PaperCut servers against the education facilities sector in the country. The attacks took place in early May 2023, the Federal Bureau of Investigation (FBI) and Cybersecurity and Infrastructure Security Agency (CISA) said in a joint cybersecurity advisory issued Thursday. "The Bl00dy Ransomware Gang gained access to victim networks across the Education Facilities Subsector where PaperCut servers vulnerable to  CVE-2023-27350  were exposed to the internet," the agencies  said . "Ultimately, some of these operations led to data exfiltration and encryption of victim systems. The Bl00dy Ransomware Gang left ransom notes on victim systems demanding payment in exchange for decryption of encrypted files." Additionally, the Bl00dy actors are said to have used TOR and other proxies from within vic...