Remote Access Trojan | Breaking Cybersecurity News | The Hacker News

Cybersecurity researchers are calling attention to a series of cyber attacks that have targeted Chinese-speaking regions like Hong Kong, Taiwan, and Mainland China with a known malware called ValleyRAT. The attacks leverage a multi-stage loader dubbed PNGPlug to deliver the ValleyRAT payload, Intezer said in a technical report published last week. The infection chain commences with a phishing page that's designed to encourage victims to download a malicious Microsoft Installer (MSI) package disguised as legitimate software.  Once executed, the installer deploys a benign application to avoid arousing suspicion, while also stealthily extracting an encrypted archive containing the malware payload. "The MSI package uses the Windows Installer's CustomAction feature, enabling it to execute malicious code, including running an embedded malicious DLL that decrypts the archive (all.zip) using a hardcoded password 'hello202411' to extract the core malware components,...

The U.S. Department of Justice (DoJ) on Tuesday disclosed that a court-authorized operation allowed the Federal Bureau of Investigation (FBI) to delete PlugX malware from over 4,250 infected computers as part of a "multi-month law enforcement operation." PlugX, also known as Korplug, is a remote access trojan (RAT) widely used by threat actors associated with the People's Republic of China (PRC), allowing for information theft and remote control of compromised devices. An affidavit filed by the FBI noted that the identified PlugX variant is linked to a state-sponsored hacking group called Mustang Panda , which is also referred to as BASIN, Bronze President, Camaro Dragon, Earth Preta, HoneyMyte, RedDelta, Red Lich, Stately Taurus, TA416, and Twill Typhoon. "Since at least 2014, Mustang Panda hackers then infiltrated thousands of computer systems in campaigns targeting U.S. victims, as well as European and Asian governments and businesses, and Chinese dissident...

Every week seems to bring news of another data breach, and it's no surprise why: securing sensitive data has become harder than ever. And it's not just because companies are dealing with orders of magnitude more data. Data flows and user roles are constantly shifting, and data is stored across multiple technologies and cloud environments. Not to mention, compliance requirements are only getting stricter and more elaborate.  The problem is that while the data landscape has evolved rapidly, the usual strategies for securing that data are stuck in the past. Gone are the days when data lived in predictable places, with access controlled by a chosen few. Today, practically every department in the business needs to use customer data, and AI adoption means huge datasets, and a constant flux of permissions, use cases, and tools. Security teams are struggling to implement effective strategies for securing sensitive data, and a new crop of tools, called data security platforms, have appear...

Cybersecurity researchers have shed light on a new remote access trojan called NonEuclid that allows bad actors to remotely control compromised Windows systems. "The NonEuclid remote access trojan (RAT), developed in C#, is a highly sophisticated malware offering unauthorised remote access with advanced evasion techniques," Cyfirma said in a technical analysis published last week. "It employs various mechanisms, including antivirus bypass, privilege escalation, anti-detection, and ransomware encryption targeting critical files." NonEuclid has been advertised in underground forums since at least late November 2024, with tutorials and discussions about the malware discovered on popular platforms like Discord and YouTube. This points to a concerted effort to distribute the malware as a crimeware solution. At its core, the RAT commences with an initialization phase for a client application, after which it performs a series of checks to evade detection prior to s...

2024 had its fair share of high-profile cyber attacks, with companies as big as Dell and TicketMaster falling victim to data breaches and other infrastructure compromises. In 2025, this trend will continue. So, to be prepared for any kind of malware attack, every organization needs to know its cyber enemy in advance. Here are 5 common malware families that you can start preparing to counter right now. Lumma Lumma is a widely available malware designed to steal sensitive information. It has been openly sold on the Dark Web since 2022. This malware can effectively collect and exfiltrate data from targeted applications, including login credentials, financial information, and personal details. Lumma is regularly updated to enhance its capabilities. It can log detailed information from compromised systems, such as browsing history and cryptocurrency wallet data. It can be used to install other malicious software on infected devices. In 2024, Lumma was distributed through various methods...

A suspected South Asian cyber espionage threat group known as Bitter targeted a Turkish defense sector organization in November 2024 to deliver two C++-malware families tracked as WmRAT and MiyaRAT. "The attack chain used alternate data streams in a RAR archive to deliver a shortcut (LNK) file that created a scheduled task on the target machine to pull down further payloads," Proofpoint researchers Nick Attfield, Konstantin Klinger, Pim Trouerbach, and David Galazin said in a report shared with The Hacker News. The enterprise security company is tracking the threat actor under the name TA397. Known to be active since at least 2013, the adversary is also referred to as APT-C-08, APT-Q-37, Hazy Tiger, and Orange Yali. Prior attacks conducted by the hacking group have targeted entities in China, Pakistan, India, Saudi Arabia, and Bangladesh with malware such as BitterRAT , ArtraDownloader , and ZxxZ, indicating a heavy Asian focus. Bitter has also been linked to cyber...

Cybersecurity researchers have shed light on a previously undocumented aspect associated with ClickFix-style attacks that hinge on taking advantage of a single ad network service as part of a malvertising-driven information stealer campaign dubbed DeceptionAds . "Entirely reliant on a single ad network for propagation, this campaign showcases the core mechanisms of malvertising — delivering over 1 million daily 'ad impressions' [in the last ten days] and causing thousands of daily victims to lose their accounts and money through a network of 3,000+ content sites funneling traffic," Nati Tal, head of Guardio Labs, said in a report shared with The Hacker News. The campaigns, as documented by several cybersecurity companies in recent months, involve directing visitors of pirated movie sites and others to bogus CAPTCHA verification pages that instruct them to copy and execute a Base64-encoded PowerShell command, ultimately leading to the deployment of information st...

Cybersecurity researchers have shed light on a new remote access trojan and information stealer used by Iranian state-sponsored actors to conduct reconnaissance of compromised endpoints and execute malicious commands. Cybersecurity company Check Point has codenamed the malware WezRat , stating it has been detected in the wild since at least September 1, 2023, based on artifacts uploaded to the VirusTotal platform. "WezRat can execute commands, take screenshots, upload files, perform keylogging, and steal clipboard content and cookie files," it said in a technical report. "Some functions are performed by separate modules retrieved from the command and control (C&C) server in the form of DLL files, making the backdoor's main component less suspicious." WezRat is assessed to be the work of Cotton Sandstorm, an Iranian hacking group that's better known under the cover names Emennet Pasargad and, more recently, Aria Sepehr Ayandehsazan (ASA). The malware w...

In an unusually specific campaign, users searching about the legality of Bengal Cats in Australia are being targeted with the GootLoader malware. "In this case, we found the GootLoader actors using search results for information about a particular cat and a particular geography being used to deliver the payload: 'Are Bengal Cats legal in Australia?,'" Sophos researchers Trang Tang, Hikaru Koike, Asha Castle, and Sean Gallagher said in a report published last week. GootLoader , as the name implies, is a malware loader that's typically distributed using search engine optimization (SEO) poisoning tactics for initial access. Specifically, the malware is deployed onto victim machines when searching for certain terms like legal documents and agreements on search engines like Google surface booby-trapped links pointing to compromised websites that host a ZIP archive containing a JavaScript payload. Once installed, it makes way for a second-stage malware, often an...

Cybersecurity researchers have discovered a new phishing campaign that spreads a new fileless variant of known commercial malware called Remcos RAT . Remcos RAT "provides purchases with a wide range of advanced features to remotely control computers belonging to the buyer," Fortinet FortiGuard Labs researcher Xiaopeng Zhang said in an analysis published last week. "However, threat actors have abused Remcos to collect sensitive information from victims and remotely control their computers to perform further malicious acts." The starting point of the attack is a phishing email that uses purchase order-themed lures to convince recipients to open a Microsoft Excel attachment. The malicious Excel document is designed to exploit a known remote code execution flaw in Office ( CVE-2017-0199 , CVSS score: 7.8) to download an HTML Application (HTA) file ("cookienetbookinetcahce.hta") from a remote server ("192.3.220[.]22") and launch it using mshta.e...

Russian-speaking users have become the target of a new phishing campaign that leverages an open-source phishing toolkit called Gophish to deliver DarkCrystal RAT (aka DCRat) and a previously undocumented remote access trojan dubbed PowerRAT. "The campaign involves modular infection chains that are either Maldoc or HTML-based infections and require the victim's intervention to trigger the infection chain," Cisco Talos researcher Chetan Raghuprasad said in a Tuesday analysis. The targeting of Russian-speaking users is an assessment derived from the language used in the phishing emails, the lure content in the malicious documents, links masquerade as Yandex Disk ("disk-yandex[.]ru"), and HTML web pages disguised as VK, a social network predominantly used in the country. Gophish refers to an open-source phishing framework that allows organizations to test their phishing defenses by leveraging easy-to-use templates and launch email-based campaigns that can the...

Threat actors with ties to North Korea have been observed delivering a previously undocumented backdoor and remote access trojan (RAT) called VeilShell as part of a campaign targeting Cambodia and likely other Southeast Asian countries. The activity, dubbed SHROUDED#SLEEP by Securonix, is believed to be the handiwork of APT37 , which is also known as InkySquid, Reaper, RedEyes, Ricochet Chollima, Ruby Sleet, and ScarCruft. Active since at least 2012, the adversarial collective is assessed to be part of North Korea's Ministry of State Security (MSS). Like with other state-aligned groups, those affiliated with North Korea, including the Lazarus Group and Kimsuky, vary in their modus operandi and likely have ever-evolving objectives based on state interests. A key malware in its toolbox is RokRAT (aka Goldbackdoor), although the group has also developed custom tools to facilitate covert intelligence gathering. It's currently not known how the first stage payload, a ZIP arc...

Transportation and logistics companies in North America are the target of a new phishing campaign that delivers a variety of information stealers and remote access trojans (RATs). The activity cluster, per Proofpoint, makes use of compromised legitimate email accounts belonging to transportation and shipping companies so as to inject malicious content into existing email conversations. As many as 15 breached email accounts have been identified as used as part of the campaign. It's currently not clear how these accounts are infiltrated in the first place or who is behind the attacks. "Activity which occurred from May to July 2024 predominately delivered Lumma Stealer, StealC, or NetSupport," the enterprise security firm said in an analysis published Tuesday. "In August 2024, the threat actor changed tactics by employing new infrastructure and a new delivery technique, as well as adding payloads to deliver DanaBot and Arechclient2." The attack chains invol...

A previously undocumented malware called SambaSpy is exclusively targeting users in Italy via a phishing campaign orchestrated by a suspected Brazilian Portuguese-speaking threat actor. "Threat actors usually try to cast a wide net to maximize their profits, but these attackers are focused on just one country," Kaspersky said in a new analysis. "It's likely that the attackers are testing the waters with Italian users before expanding their operation to other countries." The starting point of the attack is a phishing email that either includes an HTML attachment or an embedded link that initiates the infection process. Should the HTML attachment be opened, a ZIP archive containing an interim downloader or dropper is used to deploy and launch the multi-functional RAT payload. The downloader, for its part, is responsible for fetching the malware from a remote server. The dropper, on the other hand, does the same thing, but extracts the payload from the archive...