Malware | Breaking Cybersecurity News | The Hacker News

Threat actors linked to the Black Basta ransomware may have exploited a recently disclosed privilege escalation flaw in the Microsoft Windows Error Reporting Service as a zero-day, according to new findings from Symantec. The security flaw in question is CVE-2024-26169 (CVSS score: 7.8), an elevation of privilege bug in the Windows Error Reporting Service that could be exploited to achieve SYSTEM privileges. It was patched by Microsoft in March 2024. "Analysis of an exploit tool deployed in recent attacks revealed evidence that it could have been compiled prior to patching, meaning at least one group may have been exploiting the vulnerability as a zero-day," the Symantec Threat Hunter Team, part of Broadcom, said in a report shared with The Hacker News. The financially motivated threat cluster is being tracked by the company under the name Cardinal. It's also monitored by the cybersecurity community under the names Storm-1811 and UNC4393 . It's known to mon...

Cybersecurity researchers have disclosed details of an ongoing phishing campaign that leverages recruiting- and job-themed lures to deliver a Windows-based backdoor named WARMCOOKIE. "WARMCOOKIE appears to be an initial backdoor tool used to scout out victim networks and deploy additional payloads," Elastic Security Labs researcher Daniel Stepanic said in a new analysis. "Each sample is compiled with a hard-coded [command-and-control] IP address and RC4 key." The backdoor comes with capabilities to fingerprint infected machines, capture screenshots, and drop more malicious programs. The company is tracking the activity under the name REF6127. The attack chains observed since late April involve the use of email messages purporting to be from recruitment firms like Hays, Michael Page, and PageGroup, urging recipients to click on an embedded link to view details about a job opportunity. Users who end up clicking on the link are then prompted to download a docume...

State-sponsored threat actors backed by China gained access to 20,000 Fortinet FortiGate systems worldwide by exploiting a known critical security flaw between 2022 and 2023, indicating that the operation had a broader impact than previously known. "The state actor behind this campaign was already aware of this vulnerability in FortiGate systems at least two months before Fortinet disclosed the vulnerability," the Dutch National Cyber Security Centre (NCSC) said in a new bulletin. "During this so-called zero-day period, the actor alone infected 14,000 devices." The campaign targeted dozens of Western governments, international organizations, and a large number of companies within the defense industry. The names of the entities were not disclosed. The findings build on an earlier advisory from February 2024, which found that the attackers had breached a computer network used by the Dutch armed forces by exploiting CVE-2022-42475 (CVSS score: 9.8), which allows...

Cybersecurity researchers have shed more light on a Chinese actor codenamed SecShow that has been observed conducting Domain Name System (DNS) on a global scale since at least June 2023. The adversary, according to Infoblox security researchers Dr. Renée Burton and Dave Mitchell, operates from the China Education and Research Network ( CERNET ), a project funded by the Chinese government. "These probes seek to find and measure DNS responses at open resolvers," they said in a report published last week. "The end goal of the SecShow operations is unknown, but the information that is gathered can be used for malicious activities and is only for the benefit of the actor." That said, there is some evidence to suggest that it may have been linked to some kind of academic research related to "performing measurements using IP Address Spoofing Techniques on domains within secshow.net" modeled on the same approach as the Closed Resolver Project . This, howeve...

Cybersecurity researchers have uncovered an updated version of malware called ValleyRAT that's being distributed as part of a new campaign. "In the latest version, ValleyRAT introduced new commands, such as capturing screenshots, process filtering, forced shutdown, and clearing Windows event logs," Zscaler ThreatLabz researchers Muhammed Irfan V A and Manisha Ramcharan Prajapati said . ValleyRAT was previously documented by QiAnXin and Proofpoint in 2023 in connection with a phishing campaign targeting Chinese-speaking users and Japanese organizations that distributed various malware families such as Purple Fox and a variant of the Gh0st RAT trojan known as Sainbox RAT (aka FatalRAT). The malware has been assessed to be the work of a China-based threat actor, boasting of capabilities to harvest sensitive information and drop additional payloads onto compromised hosts. The starting point is a downloader that utilizes an HTTP File Server (HFS) to fetch a file named...

As many as 165 customers of Snowflake are said to have had their information potentially exposed as part of an ongoing campaign designed to facilitate data theft and extortion, indicating the operation has broader implications than previously thought. Google-owned Mandiant, which is assisting the cloud data warehousing platform in its incident response efforts, is tracking the as-yet-unclassified activity cluster under the name UNC5537 , describing it as a financially motivated threat actor. "UNC5537 is systematically compromising Snowflake customer instances using stolen customer credentials, advertising victim data for sale on cybercrime forums, and attempting to extort many of the victims," the threat intelligence firm said on Monday. "UNC5537 has targeted hundreds of organizations worldwide, and frequently extorts victims for financial gain. UNC5537 operates under various aliases on Telegram channels and cybercrime forums." There is evidence to suggest tha...

Cybersecurity researchers have disclosed details of a threat actor known as Sticky Werewolf that has been linked to cyber attacks targeting entities in Russia and Belarus. The phishing attacks were aimed at a pharmaceutical company, a Russian research institute dealing with microbiology and vaccine development, and the aviation sector, expanding beyond their initial focus of government organizations, Morphisec said in a report last week. "In previous campaigns, the infection chain began with phishing emails containing a link to download a malicious file from platforms like gofile.io," security researcher Arnold Osipov said. "This latest campaign used archive files containing LNK files pointing to a payload stored on WebDAV servers." Sticky Werewolf, one of the many threat actors targeting Russia and Belarus such as Cloud Werewolf (aka Inception and Cloud Atlas ), Quartz Wolf , Red Wolf (aka RedCurl ), and Scaly Wolf , was first documented by BI.ZONE in Octo...

Microsoft on Friday said it will disable its much-criticized artificial intelligence (AI)-powered Recall feature by default and make it an opt-in. Recall , currently in preview and coming exclusively to Copilot+ PCs on June 18, 2024, functions as an "explorable visual timeline" by capturing screenshots of what appears on users' screens every five seconds, which are subsequently analyzed and parsed to surface relevant information. But the feature, meant to serve as some sort of an AI-enabled photographic memory, was met with instantaneous backlash from the security and privacy community, which excoriated the company for having not thought through enough and implementing adequate safeguards that could prevent malicious actors from easily gaining a window into a victim's digital life. The recorded information could include screenshots of documents, emails, or messages containing sensitive details that may have been deleted or shared temporarily using disappearing ...

Cybersecurity researchers have disclosed that the LightSpy spyware recently identified as targeting Apple iOS users is in fact a previously undocumented macOS variant of the implant. The findings come from both Huntress Labs and ThreatFabric , which separately analyzed the artifacts associated with the cross-platform malware framework that likely possesses capabilities to infect Android, iOS, Windows, macOS, Linux, and routers from NETGEAR, Linksys, and ASUS. "The Threat actor group used two publicly available exploits ( CVE-2018-4233 ,  CVE-2018-4404 ) to deliver implants for macOS," ThreatFabric said in a report published last week. "Part of the CVE-2018-4404 exploit is likely borrowed from the Metasploit framework. macOS version 10 was targeted using those exploits." LightSpy was first publicly reported in 2020, although subsequent reports from Lookout and the Dutch mobile security firm have revealed possible connections between the spyware and an Android s...

The Computer Emergency Response Team of Ukraine (CERT-UA) has warned of cyber attacks targeting defense forces in the country with a malware called SPECTR as part of an espionage campaign dubbed SickSync. The agency attributed the attacks to a threat actor it tracks under the moniker UAC-0020, which is also called Vermin and is assessed to be associated with security agencies of the Luhansk People's Republic (LPR). LPR was declared a sovereign state by Russia days prior to its military invasion of Ukraine in February 2022. Attack chains commence with spear-phishing emails containing a RAR self-extracting archive file containing a decoy PDF file, a trojanized version of the SyncThing application that incorporates the SPECTR payload, and a batch script that activates the infection by launching the executable. SPECTR serves as an information stealer by grabbing screenshots every 10 seconds, harvesting files, gathering data from removable USB drives, and stealing credentials and ...

The threat actor known as Commando Cat has been linked to an ongoing cryptojacking attack campaign that leverages poorly secured Docker instances to deploy cryptocurrency miners for financial gain. "The attackers used the cmd.cat/chattr docker image container that retrieves the payload from their own command-and-control (C&C) infrastructure," Trend Micro researchers Sunil Bharti and Shubham Singh said in a Thursday analysis. Commando Cat, so named for its use of the open-source Commando project to generate a benign container, was first documented earlier this year by Cado Security. The attacks are characterized by the targeting of misconfigured Docker remote API servers to deploy a Docker image named cmd.cat/chattr, which is then used as a basis to instantiate a container and break out of its confines using the chroot command, and gain access to the host operating system. The final step entails retrieving the malicious miner binary using a curl or wget command fr...

Muhstik botnet exploits a critical Apache RocketMQ flaw (CVE-2023-33246) for remote code execution , targeting Linux servers and IoT devices for DDoS attacks and cryptocurrency mining . Infection involves executing a shell script from a remote IP, downloading the Muhstik malware binary ("pty3") , and ensuring persistence by copying to multiple directories and editing system files. With over 5,000 vulnerable Apache RocketMQ instances still exposed, organizations must update to the latest version to mitigate risks, while securing MS-SQL servers against brute-force attacks and ensuring regular password changes. The distributed denial-of-service (DDoS) botnet known as Muhstik has been observed leveraging a now-patched security flaw impacting Apache RocketMQ to co-opt susceptible servers and expand its scale. "Muhstik is a well-known threat targeting IoT devices and Linux-based servers, notorious for its ability to infect devices and utilize the...

Learn about critical threats that can impact your organization and the bad actors behind them from Cybersixgill’s threat experts. Each story shines a light on underground activities, the threat actors involved, and why you should care, along with what you can do to mitigate risk.  In an increasingly interconnected world, supply chain attacks have emerged as a formidable threat, compromising not just individual organizations but the broader digital ecosystem. The web of interdependencies among businesses, especially for software and IT vendors, provides fertile ground for cybercriminals to exploit vulnerabilities. By targeting one weak link in the supply chain, threat actors can gain unauthorized access to sensitive information and can conduct malicious activities with severe consequences on multiple organizations, from data breaches and financial losses to widespread disruption and reputational damage. Understanding the nature, impact, and mitigation strategies of supply chain...

Threat actors are increasingly abusing legitimate and commercially available packer software such as BoxedApp to evade detection and distribute malware such as remote access trojans and information stealers. "The majority of the attributed malicious samples targeted financial institutions and government industries," Check Point security researcher Jiri Vinopal said in an analysis. The volume of samples packed with BoxedApp and submitted to the Google-owned VirusTotal malware scanning platform witnessed a spike around May 2023, the Israeli cybersecurity firm added, with the artifact submissions mainly originating from Turkey, the U.S., Germany, France, and Russia. Among the malware families distributed in this manner are Agent Tesla, AsyncRAT, LockBit, LodaRAT, NanoCore, Neshta, NjRAT, Quasar RAT, Ramnit, RedLine, Remcos, RevengeRAT, XWorm, and ZXShell. Packers are self-extracting archives that are often used to bundle software and make them smaller. But over the year...