Remote Access Trojan | Breaking Cybersecurity News | The Hacker News

Former members tied to the Black Basta ransomware operation have been observed sticking to their tried-and-tested approach of email bombing and Microsoft Teams phishing to establish persistent access to target networks. "Recently, attackers have introduced Python script execution alongside these techniques, using cURL requests to fetch and deploy malicious payloads," ReliaQuest said in a report shared with The Hacker News. The development is a sign that the threat actors are continuing to pivot and regroup, despite the Black Basta brand suffering a huge blow and a decline after the public leak of its internal chat logs earlier this February. The cybersecurity company said half of the Teams phishing attacks that were observed between February and May 2025 originated from onmicrosoft[.]com domains, and that breached domains accounted for 42% of the attacks during the same period. The latter is a lot more stealthy and allows threat actors to impersonate legitimate traffi...

Cybersecurity researchers have shed light on a previously undocumented Rust-based information stealer called Myth Stealer that's being propagated via fraudulent gaming websites. "Upon execution, the malware displays a fake window to appear legitimate while simultaneously decrypting and executing malicious code in the background," Trellix security researchers Niranjan Hegde, Vasantha Lakshmanan Ambasankar, and Adarsh S said in an analysis. The stealer, initially marketed on Telegram for free under beta in late December 2024, has since transitioned to a malware-as-a-service (MaaS) model. It's equipped to steal passwords, cookies, and autofill information from both Chromium- and Gecko-based browsers, such as Google Chrome, Microsoft Edge, Brave, Opera, Vivaldi, and Mozilla Firefox. The operators of the malware have been found maintaining a number of Telegram channels to advertise the sale of compromised accounts as well as provide testimonials of their service. The...

Behind every security alert is a bigger story. Sometimes it's a system being tested. Sometimes it's trust being lost in quiet ways—through delays, odd behavior, or subtle gaps in control. This week, we're looking beyond the surface to spot what really matters. Whether it's poor design, hidden access, or silent misuse, knowing where to look can make all the difference. If you're responsible for protecting systems, data, or people—these updates aren't optional. They're essential. These stories reveal how attackers think—and where we're still leaving doors open. ⚡ Threat of the Week Google Releases Patches for Actively Exploited Chrome 0-Day — Google has released Google Chrome versions 137.0.7151.68/.69 for Windows and macOS, and version 137.0.7151.68 for Linux to address a high-severity out-of-bounds read and write vulnerability in the V8 JavaScript and WebAssembly engine that it said has been exploited in the wild. Google credited Clement Lecigne and Benoît Sevens of Google T...

Cybersecurity researchers have flagged a supply chain attack targeting over a dozen packages associated with GlueStack to deliver malware. The malware, introduced via a change to "lib/commonjs/index.js," allows an attacker to run shell commands, take screenshots, and upload files to infected machines, Aikido Security told The Hacker News, stating these packages collectively account for nearly 1 million weekly downloads. The unauthorized access could then be used to perform various follow-on actions like mining cryptocurrency, stealing sensitive information, and even shutting down services. Aikido said the first package compromise was detected on June 6, 2025, at 9:33 p.m. GMT.  The list of the impacted packages and the affected versions is below - @gluestack-ui/utils version 0.1.16 (101 Downloads) @gluestack-ui/utils version 0.1.17 (176 Downloads) @react-native-aria/button version 0.2.11 (174 Downloads) @react-native-aria/checkbox version 0.2.11 (577 Downloads) @re...

Cybersecurity researchers are alerting to a new malware campaign that employs the ClickFix social engineering tactic to trick users into downloading an information stealer malware known as Atomic macOS Stealer ( AMOS ) on Apple macOS systems. The campaign, according to CloudSEK, has been found to leverage typosquat domains mimicking U.S.-based telecom provider Spectrum. "macOS users are served a malicious shell script designed to steal system passwords and download an AMOS variant for further exploitation," security researcher Koushik Pal said in a report published this week. "The script uses native macOS commands to harvest credentials, bypass security mechanisms, and execute malicious binaries." It's believed that the activity is the work of Russian-speaking cybercriminals owing to the presence of Russian language comments in the malware's source code. The starting point of the attack is a web page that impersonates Spectrum ("panel-spectrum[....

A critical infrastructure entity within Ukraine was targeted by a previously unseen data wiper malware named PathWiper, according to new findings from Cisco Talos. "The attack was instrumented via a legitimate endpoint administration framework, indicating that the attackers likely had access to the administrative console, that was then used to issue malicious commands and deploy PathWiper across connected endpoints," researchers Jacob Finn, Dmytro Korzhevin, and Asheer Malhotra said in an analysis published Thursday. The attack is assessed to be the work of a Russia-nexus advanced persistent threat (APT) actor based on the tradecraft observed and the overlapping capabilities with destructive malware used in attacks against Ukraine. Talos said the commands issued by the administrative tool's console were received by its client running on the victim endpoints and then executed as a batch (BAT) file. The BAT file, in turn, consisted of a command to run a malicious Visu...

The threat actor known as Bitter has been assessed to be a state-backed hacking group that's tasked with gathering intelligence that aligns with the interests of the Indian government. That's according to new findings jointly published by Proofpoint and Threatray in an exhaustive two-part analysis. "Their diverse toolset shows consistent coding patterns across malware families, particularly in system information gathering and string obfuscation," researchers Abdallah Elshinbary, Jonas Wagner, Nick Attfield, and Konstantin Klinger said. Bitter, also known as APT-C-08, APT-Q-37, Hazy Tiger, Orange Yali, T-APT-17, and TA397, has a history of focusing primarily on South Asian entities , with select intrusions also targeting China, Saudi Arabia, and South America. In December 2024, evidence emerged of the threat actor's targeting of Turkey using malware families such as WmRAT and MiyaRAT, indicating a gradual geographical expansion. Stating that Bitter fr...

Threat hunters are calling attention to a new variant of a remote access trojan (RAT) called Chaos RAT that has been used in recent attacks targeting Windows and Linux systems. According to findings from Acronis, the malware artifact may have been distributed by tricking victims into downloading a network troubleshooting utility for Linux environments. "Chaos RAT is an open-source RAT written in Golang, offering cross-platform support for both Windows and Linux systems," security researchers Santiago Pontiroli, Gabor Molnar, and Kirill Antonenko said in a report shared with The Hacker News. "Inspired by popular frameworks such as Cobalt Strike and Sliver, Chaos RAT provides an administrative panel where users can build payloads, establish sessions, and control compromised machines." While work on the "remote administration tool" started way back in 2017, it did not attract attention until December 2022 , when it was put to use in a malicious campaig...

If this had been a security drill, someone would've said it went too far. But it wasn't a drill—it was real. The access? Everything looked normal. The tools? Easy to find. The detection? Came too late. This is how attacks happen now—quiet, convincing, and fast. Defenders aren't just chasing hackers anymore—they're struggling to trust what their systems are telling them. The problem isn't too few alerts. It's too many, with no clear meaning. One thing is clear: if your defense still waits for obvious signs, you're not protecting anything. You're just watching it happen. This recap highlights the moments that mattered—and why they're worth your attention. ⚡ Threat of the Week APT41 Exploits Google Calendar for Command-and-Control — The Chinese state-sponsored threat actor known as APT41 deployed a malware called TOUGHPROGRESS that uses Google Calendar for command-and-control (C2). Google said it observed the spear-phishing attacks in October 2024 and that the malware was hosted on...

Fake installers for popular artificial intelligence (AI) tools like OpenAI ChatGPT and InVideo AI are being used as lures to propagate various threats, such as the CyberLock and Lucky_Gh0$t ransomware families, and a new malware dubbed Numero. "CyberLock ransomware, developed using PowerShell, primarily focuses on encrypting specific files on the victim's system," Cisco Talos researcher Chetan Raghuprasad said in a report published today. "Lucky_Gh0$t ransomware is yet another variant of the Yashma ransomware, which is the sixth iteration of the Chaos ransomware series, featuring only minor modifications to the ransomware binary." Numero, on the other hand, is a destructive malware that impacts victims by manipulating the graphical user interface (GUI) components of their Windows operating system, thereby rendering the machines unusable. The cybersecurity company said the legitimate versions of the AI tools are popular in the business-to-business (B2B) sal...

Cybersecurity researchers have taken the wraps off an unusual cyber attack that leveraged malware with corrupted DOS and PE headers, according to new findings from Fortinet. The DOS (Disk Operating System) and PE (Portable Executable) headers are essential parts of a Windows PE file , providing information about the executable. While the DOS header makes the executable file backward compatible with MS-DOS and allows it to be recognized as a valid executable by the operating system, the PE header contains the metadata and information necessary for Windows to load and execute the program. "We discovered malware that had been running on a compromised machine for several weeks," researchers Xiaopeng Zhang and John Simmons from the FortiGuard Incident Response Team said in a report shared with The Hacker News. "The threat actor had executed a batch of scripts and PowerShell to run the malware in a Windows process." Fortinet said while it was unable to extract th...

Cyber threats don't show up one at a time anymore. They're layered, planned, and often stay hidden until it's too late. For cybersecurity teams, the key isn't just reacting to alerts—it's spotting early signs of trouble before they become real threats. This update is designed to deliver clear, accurate insights based on real patterns and changes we can verify. With today's complex systems, we need focused analysis—not noise. What you'll see here isn't just a list of incidents, but a clear look at where control is being gained, lost, or quietly tested. ⚡ Threat of the Week Lumma Stealer, DanaBot Operations Disrupted — A coalition of private sector companies and law enforcement agencies have taken down the infrastructure associated with Lumma Stealer and DanaBot . Charges have also been unsealed against 16 individuals for their alleged involvement in the development and deployment of DanaBot. The malware is equipped to siphon data from victim computers, hijack banking session...

Cybersecurity researchers have disclosed a malware campaign that uses fake software installers masquerading as popular tools like LetsVPN and QQ Browser to deliver the Winos 4.0 framework. The campaign, first detected by Rapid7 in February 2025, involves the use of a multi-stage, memory-resident loader called Catena. "Catena uses embedded shellcode and configuration switching logic to stage payloads like Winos 4.0 entirely in memory, evading traditional antivirus tools," security researchers Anna Širokova and Ivan Feigl said . "Once installed, it quietly connects to attacker-controlled servers – mostly hosted in Hong Kong – to receive follow-up instructions or additional malware." The attacks, like those that have deployed Winos 4.0 in the past, appear to focus specifically on Chinese-speaking environments, with the cybersecurity company calling out the "careful, long-term planning" by a very capable threat actor. Winos 4.0 (aka ValleyRAT) was first ...