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Unauthorized websites distributing trojanized versions of cracked software have been found to infect Apple macOS users with a new  Trojan-Proxy  malware. "Attackers can use this type of malware to gain money by building a proxy server network or to perform criminal acts on behalf of the victim: to launch attacks on websites, companies and individuals, buy guns, drugs, and other illicit goods," Kaspersky security researcher Sergey Puzan  said . The Russian cybersecurity firm said it found evidence indicating that the malware is a cross-platform threat, owing to artifacts unearthed for Windows and Android that piggybacked on pirated tools. The macOS variants propagate under the guise of legitimate multimedia, image editing, data recovery, and productivity tools. This suggests that users searching for pirated software are the targets of the campaign. Unlike their genuine, unaltered counterparts, which are offered as disk image (.DMG) files, the rogue versions are deliv...

Threat actors with ties to China have been observed using an updated version of a backdoor called COOLCLIENT in cyber espionage attacks in 2025 to facilitate comprehensive data theft from infected endpoints. The activity has been attributed to Mustang Panda (aka Earth Preta, Fireant, HoneyMyte, Polaris, and Twill Typhoon) with the intrusions primarily directed against government entities located across campaigns across Myanmar, Mongolia, Malaysia, and Russia. Kaspersky, which disclosed details of the updated malware, said it's deployed as a secondary backdoor along with PlugX and LuminousMoth infections. "COOLCLIENT was typically delivered alongside encrypted loader files containing encrypted configuration data, shellcode, and in-memory next-stage DLL modules," the Russian cybersecurity company said . "These modules relied on DLL side-loading as their primary execution method, which required a legitimate signed executable to load a malicious DLL." Betwe...

The China-linked cyber espionage group tracked as APT41 has been attributed to a new campaign targeting government IT services in the African region. "The attackers used hardcoded names of internal services, IP addresses, and proxy servers embedded within their malware," Kaspersky researchers Denis Kulik and Daniil Pogorelov said . "One of the C2s [command-and-control servers] was a captive SharePoint server within the victim's infrastructure." APT41 is the moniker assigned to a prolific Chinese nation-state hacking group that's known for targeting organizations spanning multiple sectors, including telecom and energy providers, educational institutions, healthcare organizations and IT energy companies in more than three dozen countries. What makes the campaign noteworthy is its focus on Africa, which, as the Russian cybersecurity vendor noted, "had experienced the least activity" from this specific threat actor. That said, the findings line u...

Cybersecurity researchers have disclosed a surge in "mass scanning, credential brute-forcing, and exploitation attempts" originating from IP addresses associated with a Russian bulletproof hosting service provider named Proton66 . The activity, detected since January 8, 2025, targeted organizations worldwide, according to a two-part analysis published by Trustwave SpiderLabs last week.  "Net blocks 45.135.232.0/24 and 45.140.17.0/24 were particularly active in terms of mass scanning and brute-force attempts," security researchers Pawel Knapczyk and Dawid Nesterowicz said . "Several of the offending IP addresses were not previously seen to be involved in malicious activity or were inactive for over two years." The Russian autonomous system Proton66 is assessed to be linked to another autonomous system named PROSPERO. Last year, French security firm Intrinsec detailed their connections to bulletproof services marketed on Russian cybercrime forums under ...

An updated version of a sophisticated backdoor framework called  MATA  has been used in attacks aimed at over a dozen Eastern European companies in the oil and gas sector and defense industry as part of a cyber espionage operation that took place between August 2022 and May 2023. "The actors behind the attack used spear-phishing mails to target several victims, some were infected with Windows executable malware by downloading files through an internet browser," Kaspersky  said  in a new exhaustive report published this week. "Each phishing document contains an external link to fetch a remote page containing a  CVE-2021-26411  exploit." CVE-2021-26411 (CVSS score: 8.8) refers to a  memory corruption vulnerability  in Internet Explorer that could be triggered to execute arbitrary code by tricking a victim into visiting a specially crafted site. It was previously exploited by the Lazarus Group in early 2021 to target security researchers. The cr...

A new simple but dangerous strain of Android malware has been found in the wild that steals users' authentication cookies from the web browsing and other apps, including Chrome and Facebook, installed on the compromised devices. Dubbed " Cookiethief " by Kaspersky researchers, the Trojan works by acquiring superuser root rights on the target device, and subsequently, transfer stolen cookies to a remote command-and-control (C2) server operated by attackers. "This abuse technique is possible not because of a vulnerability in the Facebook app or browser itself," Kaspersky researchers said. "Malware could steal cookie files of any website from other apps in the same way and achieve similar results." Cookiethief: Hijacking Accounts Without Requiring Passwords Cookies are small pieces of information that's often used by websites to differentiate one user from another, offer continuity around the web, track browsing sessions across different ...

The threat actor known as Tomiris has been attributed to attacks targeting foreign ministries, intergovernmental organizations, and government entities in Russia with an aim to establish remote access and deploy additional tools. "These attacks highlight a notable shift in Tomiris's tactics, namely the increased use of implants that leverage public services (e.g., Telegram and Discord) as command-and-control (C2) servers," Kaspersky researchers Oleg Kupreev and Artem Ushkov said in an analysis. "This approach likely aims to blend malicious traffic with legitimate service activity to evade detection by security tools." The cybersecurity company said more than 50% of the spear-phishing emails and decoy files used in the campaign used Russian names and contained Russian text, indicating that Russian-speaking users or entities were the primary focus. The spear-phishing emails have also targeted Turkmenistan, Kyrgyzstan, Tajikistan, and Uzbekistan using tailored...

Two known threat activity clusters codenamed Head Mare and Twelve have likely joined forces to target Russian entities, new findings from Kaspersky reveal. "Head Mare relied heavily on tools previously associated with Twelve. Additionally, Head Mare attacks utilized command-and-control (C2) servers exclusively linked to Twelve prior to these incidents," the company said . "This suggests potential collaboration and joint campaigns between the two groups." Both Head Mare and Twelve were previously documented by Kaspersky in September 2024, with the former leveraging a now-patched vulnerability in WinRAR (CVE-2023-38831) to obtain initial access and deliver malware and in some cases, even deploy ransomware families like LockBit for Windows and Babuk for Linux (ESXi) in exchange for a ransom. Twelve, on the other hand, has been observed staging destructive attacks, taking advantage of various publicly available tools to encrypt victims' data and irrevocably d...

Counterfeit versions of popular smartphone models that are sold at reduced prices have been found to be preloaded with a modified version of an Android malware called Triada . "More than 2,600 users in different countries have encountered the new version of Triada, the majority in Russia," Kaspersky said in a report. The infections were recorded between March 13 and 27, 2025.  Triada is the name given to a modular Android malware family that was first discovered by the Russian cybersecurity company in March 2016. A remote access trojan (RAT), it's equipped to steal a wide range of sensitive information, as well as enlist infected devices into a botnet for other malicious activities. While the malware was previously observed being distributed via intermediate apps published on the Google Play Store (and elsewhere) that gained root access to the compromised phones, subsequent campaigns have leveraged WhatsApp mods like FMWhatsApp and YoWhatsApp as a propagation vec...

Cybersecurity researchers have warned of an actively expanding botnet dubbed Tsundere that's targeting Windows users. Active since mid-2025, the threat is designed to execute arbitrary JavaScript code retrieved from a command-and-control (C2) server, Kaspersky researcher Lisandro Ubiedo said in an analysis published today. There are currently no details on how the botnet malware is propagated; however, in at least one case, the threat actors behind the operation are said to have leveraged a legitimate Remote Monitoring and Management (RMM) tool as a conduit to download an MSI installer file from a compromised site. The names given to the malware artifacts – Valorant, r6x (Rainbow Six Siege X), and cs2 (Counter-Strike 2) – also suggest that the implant is likely being disseminated using game-related lures. It's possible that users searching for pirated versions of these games are the target. Regardless of the method used, the fake MSI installer is designed to install Node...

Due to the recent surge in cryptocurrency prices, not only hackers but also legitimate website administrators are increasingly using JavaScript-based cryptocurrency miners to monetize by levying the CPU power of your PC to mine Bitcoin or other cryptocurrencies. Just last week, researchers from AdGuard discovered that some popular video streaming and ripper sites including openload, Streamango, Rapidvideo, and OnlineVideoConverter hijacks CPU cycles from their over hundreds of millions of visitors for mining Monero cryptocurrency. Now, researchers from Moscow-based cyber security firm Kaspersky Lab have uncovered a new strain of Android malware lurking in fake anti-virus and porn applications, which is capable of performing a plethora of nefarious activities—from mining cryptocurrencies to launching Distributed Denial of Service (DDoS) attacks. Dubbed Loapi , the new Android Trojan can perform so many more malicious activities at a time that can exploit a handset to the e...

The threat actor known as TA558 has been attributed to a fresh set of attacks delivering various remote access trojans (RATs) like Venom RAT to breach hotels in Brazil and Spanish-speaking markets. Russian cybersecurity vendor Kaspersky is tracking the activity, observed in summer 2025, to a cluster it tracks as RevengeHotels. "The threat actors continue to employ phishing emails with invoice themes to deliver Venom RAT implants via JavaScript loaders and PowerShell downloaders," the company said . "A significant portion of the initial infector and downloader code in this campaign appears to be generated by large language model (LLM) agents." The findings demonstrate a new trend among cybercriminal groups to leverage artificial intelligence (AI) to bolster their tradecraft. Known to be active since at least 2015, RevengeHotels has a history of hospitality, hotel, and travel organizations in Latin America with the goal of installing malware on compromised syste...

Cybersecurity researchers are drawing attention to a new campaign that's using legitimate generative artificial intelligence (AI)-powered website building tools like DeepSite AI and BlackBox AI to create replica phishing pages mimicking Brazilian government agencies as part of a financially motivated campaign. The activity involves the creation of lookalike sites imitating Brazil's State Department of Traffic and Ministry of Education, which then trick unsuspecting users into making unwarranted payments through the country's PIX payment system, Zscaler ThreatLabz said. These fraudulent sites are artificially boosted using search engine optimization (SEO) poisoning techniques to enhance their visibility, thereby increasing the likelihood of success of the attack. "Source code analysis reveals signatures of generative AI tools, such as overly explanatory comments meant to guide developers, non-functional elements that would typically work on an authentic website, and...

A new sensational discovered has been announced by Kaspersky Lab’s Global Research & Analysis Team result of an investigation after several attacks hit computer networks of various international diplomatic service agencies. A new large scale cyber-espionage operation has been discovered, named Red October , name inspired by famous novel The Hunt For The Red October (ROCRA) and chosen because the investigation started last October. The campaign hit hundreds of machines belonging to following categories: Government Diplomatic / embassies Research institutions Trade and commerce Nuclear / energy research Oil and gas companies Aerospace Military The attackers have targeted various devices such as enterprise network equipment and mobile devices (Windows Mobile, iPhone, Nokia), hijacking files from removable disk drives, stealing e-mail databases from local Outlook storage or remote POP/IMAP server and siphoning files from local network FTP servers. Accordin...