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A malvertising campaign is leveraging trojanized installers for popular software such as Google Chrome and Microsoft Teams to drop a backdoor called Oyster (aka Broomstick and CleanUpLoader). That's according to findings from Rapid7, which identified lookalike websites hosting the malicious payloads that users are redirected to after searching for them on search engines like Google and Bing. The threat actors are luring unsuspecting users to fake websites purporting to contain legitimate software. But attempting to download the setup binary launches a malware infection chain instead. Specifically, the executable serves as a pathway for a backdoor called Oyster, which is capable of gathering information about the compromised host, communicating with a hard-coded command-and-control (C2) address, and supporting remote code execution. While Oyster has been observed in the past being delivered by means of a dedicated loader component known as Broomstick Loader (aka Oyster Instal...

A recently patched high-severity flaw impacting SolarWinds Serv-U file transfer software is being actively exploited by malicious actors in the wild. The vulnerability, tracked as CVE-2024-28995 (CVSS score: 8.6), concerns a directory transversal bug that could allow attackers to read sensitive files on the host machine. Affecting all versions of the software prior to and including Serv-U 15.4.2 HF 1, it was addressed by the company in version Serv-U 15.4.2 HF 2 (15.4.2.157) released earlier this month. The list of products susceptible to CVE-2024-28995 is below - Serv-U FTP Server 15.4 Serv-U Gateway 15.4 Serv-U MFT Server 15.4, and Serv-U File Server 15.4 Security researcher Hussein Daher of Web Immunify has been credited with discovering and reporting the flaw. Following the public disclosure, additional technical details and a proof-of-concept (PoC) exploit have since been made available. Cybersecurity firm Rapid7 described the vulnerability as trivial to exploit ...

The U.S. Department of Commerce's Bureau of Industry and Security (BIS) on Thursday announced a "first of its kind" ban that prohibits Kaspersky Lab's U.S. subsidiary from directly or indirectly offering its security software in the country. The blockade also extends to the cybersecurity company's affiliates, subsidiaries and parent companies, the department said, adding the action is based on the fact that its operations in the U.S. posed a national security risk. News of the ban was first reported by Reuters. "The company's continued operations in the United States presented a national security risk — due to the Russian Government's offensive cyber capabilities and capacity to influence or direct Kaspersky's operations — that could not be addressed through mitigation measures short of a total prohibition," the BIS said . It further said Kaspersky is subject to the jurisdiction and control of the Russian government and that its software pro...

Cybersecurity researchers have disclosed details of a now-patched security flaw in Phoenix SecureCore UEFI firmware that affects multiple families of Intel Core desktop and mobile processors. Tracked as CVE-2024-0762 (CVSS score: 7.5), the "UEFIcanhazbufferoverflow" vulnerability has been described as a case of a buffer overflow stemming from the use of an unsafe variable in the Trusted Platform Module (TPM) configuration that could result in the execution of malicious code. "The vulnerability allows a local attacker to escalate privileges and gain code execution within the UEFI firmware during runtime," supply chain security firm Eclypsium said in a report shared with The Hacker News. "This type of low-level exploitation is typical of firmware backdoors (e.g., BlackLotus ) that are increasingly observed in the wild. Such implants give attackers ongoing persistence within a device and often, the ability to evade higher-level security measures running in...

State-sponsored actors with ties to Russia have been linked to targeted cyber attacks aimed at French diplomatic entities, the country's information security agency ANSSI said in an advisory. The attacks have been attributed to a cluster tracked by Microsoft under the name Midnight Blizzard (formerly Nobelium), which overlaps with activity tracked as APT29 , BlueBravo, Cloaked Ursa, Cozy Bear, and The Dukes. While the monikers APT29 and Midnight Blizzard have been interchangeably used to refer to intrusion sets associated with the Russian Foreign Intelligence Service (SVR), ANSSI said it prefers to treat them as disparate threat clusters alongside a third one dubbed Dark Halo , which has been held responsible for the 2020 supply chain attack via SolarWinds software. "Nobelium is characterized by the use of specific codes, tactics, techniques, and procedures. Most of Nobelium campaigns against diplomatic entities use compromised legitimate email accounts belonging to dipl...

Highlights Complex Tool Landscape : Explore the wide array of cybersecurity tools used by MSPs, highlighting the common challenge of managing multiple systems that may overlap in functionality but lack integration. Top Cybersecurity Challenges : Discuss the main challenges MSPs face, including integration issues, limited visibility across systems, and the high cost and complexity of maintaining diverse tools. Effective Solutions and Strategies : Introduce strategic approaches and solutions, such as consolidating tools into unified platforms to enhance efficiency, reduce costs, and improve overall cybersecurity management. As MSPs continue to be the backbone of IT security for numerous businesses, the array of tools at their disposal has grown exponentially. However, this abundance of options isn't without its drawbacks. The challenge isn't just in choosing the right tools but in efficiently integrating and managing them to ensure seamless security coverage and operational efficiency...

Cyber espionage groups associated with China have been linked to a long-running campaign that has infiltrated several telecom operators located in a single Asian country at least since 2021. "The attackers placed backdoors on the networks of targeted companies and also attempted to steal credentials," the Symantec Threat Hunter Team, part of Broadcom, said in a report shared with The Hacker News. The cybersecurity firm did not reveal the country that was targeted, but said it found evidence to suggest that the malicious cyber activity may have started as far back as 2020. The attacks also targeted an unnamed services company that catered to the telecoms sector and a university in another Asian country, it added. The choice of tools used in this campaign overlaps with other missions conducted by Chinese espionage groups like Mustang Panda (aka Earth Preta and Fireant), RedFoxtrot (aka Neeedleminer and Nomad Panda), and Naikon (aka Firefly) in recent years. This incl...

A new Rust-based information stealer malware called Fickle Stealer has been observed being delivered via multiple attack chains with the goal of harvesting sensitive information from compromised hosts. Fortinet FortiGuard Labs said it's aware of four different distribution methods -- namely VBA dropper, VBA downloader, link downloader, and executable downloader -- with some of them using a PowerShell script to bypass User Account Control (UAC) and execute Fickle Stealer. The PowerShell script ("bypass.ps1" or "u.ps1") is also designed to periodically send information about the victim, including country, city, IP address, operating system version, computer name, and username to a Telegram bot controlled by the attacker. The stealer payload, which is protected using a packer, runs a series of anti-analysis checks to determine if it's running in a sandbox or a virtual machine environment, following which it beacons out to a remote server to exfiltrate da...

Cybersecurity researchers have uncovered a new evasive malware loader named SquidLoader that spreads via phishing campaigns targeting Chinese organizations. AT&T LevelBlue Labs, which first observed the malware in late April 2024, said it incorporates features that are designed to thwart static and dynamic analysis and ultimately evade detection. Attack chains leverage phishing emails that come with attachments that masquerade as Microsoft Word documents, but, in reality, are binaries that pave the way for the execution of the malware, which is then used to fetch second-stage shellcode payloads from a remote server, including Cobalt Strike. "These loaders feature heavy evasion and decoy mechanisms which help them remain undetected while also hindering analysis," security researcher Fernando Dominguez said . "The shellcode that is delivered is also loaded in the same loader process, likely to avoid writing the payload to disk and thus risk being detected." ...