Malware | Breaking Cybersecurity News | The Hacker News

Cybersecurity researchers have flagged a new malicious Microsoft Visual Studio Code (VS Code) extension for Moltbot (formerly Clawdbot) on the official Extension Marketplace that claims to be a free artificial intelligence (AI) coding assistant, but stealthily drops a malicious payload on compromised hosts. The extension, named "ClawdBot Agent - AI Coding Assistant" ("clawdbot.clawdbot-agent"), has since been taken down by Microsoft. It was published by a user named "clawdbot" on January 27, 2026.  Moltbot has taken off in a big way, crossing more than 85,000 stars on GitHub as of writing. The open-source project, created by Austrian developer Peter Steinberger, allows users to run a personal AI assistant powered by a large language model (LLM) locally on their own devices and interact with it over already established communication platforms like WhatsApp, Telegram, Slack, Discord, Google Chat, Signal, iMessage, Microsoft Teams, and WebChat.

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...

Google on Tuesday revealed that multiple threat actors, including nation-state adversaries and financially motivated groups, are exploiting a now-patched critical security flaw in RARLAB WinRAR to establish initial access and deploy a diverse array of payloads. "Discovered and patched in July 2025, government-backed threat actors linked to Russia and China as well as financially motivated threat actors continue to exploit this n-day across disparate operations," the Google Threat Intelligence Group (GTIG) said . "The consistent exploitation method, a path traversal flaw allowing files to be dropped into the Windows Startup folder for persistence, underscores a defensive gap in fundamental application security and user awareness." The vulnerability in question is CVE-2025-8088 (CVSS score: 8.8), which was patched by WinRAR version 7.13 released on July 30, 2025. Successful exploitation of the flaw could allow an attacker to obtain arbitrary code execution by c...

Cybersecurity researchers have discovered two malicious packages in the Python Package Index (PyPI) repository that masquerade as spellcheckers but contain functionality to deliver a remote access trojan (RAT). The packages, named spellcheckerpy and spellcheckpy , are no longer available on PyPI, but not before they were collectively downloaded a little over 1,000 times. "Hidden inside the Basque language dictionary file was a base64-encoded payload that downloads a full-featured Python RAT," Aikido researcher Charlie Eriksen said . "The attacker published three 'dormant' versions first, payload present, trigger absent, then flipped the switch with spellcheckpy v1.2.0, adding an obfuscated execution trigger that fires the moment you import SpellChecker." Unlike other packages that conceal the malicious functionality within "__init__.py" scripts, the threat actor behind the campaign has been found to add the payload inside a file named "re...

Indian government entities have been targeted in two campaigns undertaken by a threat actor that operates in Pakistan using previously undocumented tradecraft. The campaigns have been codenamed Gopher Strike and Sheet Attack by Zscaler ThreatLabz, which identified them in September 2025. "While these campaigns share some similarities with the Pakistan-linked Advanced Persistent Threat (APT) group, APT36 , we assess with medium confidence that the activity identified during this analysis might originate from a new subgroup or another Pakistan-linked group operating in parallel," researchers Sudeep Singh and Yin Hong Chang said . Sheet Attack gets its name from the use of legitimate services like Google Sheets, Firebase, and email for command-and-control (C2). On the other hand, Gopher Strike is assessed to have leveraged phishing emails as a starting point to deliver PDF documents containing a blurred image that's superimposed by a seemingly harmless pop-up instructi...

Cybersecurity researchers have disclosed details of a new campaign that combines ClickFix -style fake CAPTCHAs with a signed Microsoft Application Virtualization ( App-V ) script to distribute an information stealer called Amatera . "Instead of launching PowerShell directly, the attacker uses this script to control how execution begins and to avoid more common, easily recognized execution paths," Blackpoint researchers Jack Patrick and Sam Decker said in a report published last week. In doing so, the idea is to transform the App-V script into a living-off-the-land (LotL) binary that proxies the execution of PowerShell through a trusted Microsoft component to conceal the malicious activity. The starting point of the attack is a fake CAPTCHA verification prompt that seeks to trick users into pasting and executing a malicious command on the Windows Run dialog. But here is where the attack diverges from traditional ClickFix attacks. The supplied command, rather than invokin...

Cybersecurity researchers have discovered a JScript -based command-and-control (C2) framework called PeckBirdy that has been put to use by China-aligned APT actors since 2023 to target multiple environments. The flexible framework has been put to use against Chinese gambling industries and malicious activities targeting Asian government entities and private organizations, according to Trend Micro. "PeckBirdy is a script-based framework which, while possessing advanced capabilities, is implemented using JScript, an old script language," researchers Ted Lee and Joseph C Chen said . "This is to ensure that the framework could be launched across different execution environments via LOLBins (living-off-the-land binaries)." The cybersecurity company said it identified the PeckBirdy script framework in 2023 after it observed multiple Chinese gambling websites being injected with malicious scripts, which are designed to download and execute the primary payload in order...

Cybersecurity researchers have discovered an ongoing campaign that's targeting Indian users with a multi-stage backdoor as part of a suspected cyber espionage campaign. The activity , per the eSentire Threat Response Unit (TRU), involves using phishing emails impersonating the Income Tax Department of India to trick victims into downloading a malicious archive, ultimately granting the threat actors persistent access to their machines for continuous monitoring and data exfiltration. The end goal of the sophisticated attack is to deploy a variant of a known banking trojan called Blackmoon (aka KRBanker) and a legitimate enterprise tool called SyncFuture TSM (Terminal Security Management) that's developed by Nanjing Zhongke Huasai Technology Co., Ltd , a Chinese company. The campaign has not been attributed to any known threat actor or group. "While marketed as a legitimate enterprise tool, it is repurposed in this campaign as a powerful, all-in-one espionage framework,...

Cybersecurity researchers have discovered two malicious Microsoft Visual Studio Code (VS Code) extensions that are advertised as artificial intelligence (AI)-powered coding assistants, but also harbor covert functionality to siphon developer data to China-based servers. The extensions, which have 1.5 million combined installs and are still available for download from the official Visual Studio Marketplace , are listed below - ChatGPT - 中文版 (ID: whensunset.chatgpt-china) - 1,340,869 installs ChatGPT - ChatMoss（CodeMoss）(ID: zhukunpeng.chat-moss) - 151,751 installs Koi Security said the extensions are functional and work as expected, but they also capture every file being opened and every source code modification to servers located in China without users' knowledge or consent. The campaign has been codenamed MaliciousCorgi. "Both contain identical malicious code -- the same spyware infrastructure running under different publisher names," security researcher Tuval ...

Security failures rarely arrive loudly. They slip in through trusted tools, half-fixed problems, and habits people stop questioning. This week's recap shows that pattern clearly. Attackers are moving faster than defenses, mixing old tricks with new paths. "Patched" no longer means safe, and every day, software keeps becoming the entry point. What follows is a set of small but telling signals. Short updates that, together, show how quickly risk is shifting and why details can't be ignored. ⚡ Threat of the Week Improperly Patched Flaw Exploited Again in Fortinet Firewalls — Fortinet confirmed that it's working to completely plug a FortiCloud SSO authentication bypass vulnerability following reports of fresh exploitation activity on fully-patched firewalls. "We have identified a number of cases where the exploit was to a device that had been fully upgraded to the latest release at the time of the attack, which suggested a new attack path," the company said. The activi...

The North Korean threat actor known as Konni has been observed using PowerShell malware generated using artificial intelligence (AI) tools to target developers and engineering teams in the blockchain sector. The phishing campaign has targeted Japan, Australia, and India, highlighting the adversary's expansion of the targeting scope beyond South Korea , Russia , Ukraine , and European nations , Check Point Research said in a technical report published last week. Active since at least 2014, Konni is primarily known for its targeting of organizations and individuals in South Korea. It's also tracked as Earth Imp, Opal Sleet, Osmium, TA406, and Vedalia. In November 2025, the Genians Security Center (GSC) detailed the hacking group's targeting of Android devices by exploiting Google's asset tracking service, Find Hub, to remotely reset victim devices and erase personal data from them, signaling a new escalation of their tradecraft. As recently as this month, Konni ha...

A new multi-stage phishing campaign has been observed targeting users in Russia with ransomware and a remote access trojan called Amnesia RAT. "The attack begins with social engineering lures delivered via business-themed documents crafted to appear routine and benign," Fortinet FortiGuard Labs researcher Cara Lin said in a technical breakdown published this week. "These documents and accompanying scripts serve as visual distractions, diverting victims to fake tasks or status messages while malicious activity runs silently in the background." The campaign stands out for a couple of reasons. First, it uses multiple public cloud services to distribute different kinds of payloads. While GitHub is mainly used to distribute scripts, binary payloads are staged on Dropbox. This separation complicates takedown efforts, effectively improving resilience. Another "defining characteristic" of the campaign, per Fortinet, is the operational abuse of defendnot to d...

The Russian nation-state hacking group known as Sandworm has been attributed to what has been described as the "largest cyber attack" targeting Poland's power system in the last week of December 2025. The attack was unsuccessful, the country's energy minister, Milosz Motyka, said last week. "The command of the cyberspace forces has diagnosed in the last days of the year the strongest attack on the energy infrastructure in years," Motyka was quoted as saying. According to a new report by ESET, the attack was the work of Sandworm, which deployed a previously undocumented wiper malware codenamed DynoWiper (aka Win32/KillFiles.NMO). The links to Sandworm are based on overlaps with prior wiper activity associated with the adversary, particularly in the aftermath of Russia's military invasion of Ukraine in February 2022. The Slovakian cybersecurity company, which identified the use of the wiper as part of the attempted disruptive attack aimed at the...

Cybersecurity researchers have disclosed details of a new dual-vector campaign that leverages stolen credentials to deploy legitimate Remote Monitoring and Management (RMM) software for persistent remote access to compromised hosts. "Instead of deploying custom viruses, attackers are bypassing security perimeters by weaponizing the necessary IT tools that administrators trust," KnowBe4 Threat Labs researchers Jeewan Singh Jalal, Prabhakaran Ravichandhiran, and Anand Bodke said . "By stealing a 'skeleton key' to the system, they turn legitimate Remote Monitoring and Management (RMM) software into a persistent backdoor." The attack unfolds in two distinct waves, where the threat actors leverage fake invitation notifications to steal victim credentials, and then leverage those pilfered credentials to deploy RMM tools to establish persistent access. The bogus emails are disguised as an invitation from a legitimate platform called Greenvelope, and aim to tri...

Cybersecurity researchers have disclosed details of a new ransomware family called Osiris that targeted a major food service franchisee operator in Southeast Asia in November 2025. The attack leveraged a malicious driver called POORTRY as part of a known technique referred to as bring your own vulnerable driver (BYOVD) to disarm security software, the Symantec and Carbon Black Threat Hunter Team said. It's worth noting that Osiris is assessed to be a brand-new ransomware strain, sharing no similarities with another variant of the same name that emerged in December 2016 as an iteration of the Locky ransomware. It's currently not known who the developers of the locker are, or if it's advertised as a ransomware-as-a-service (RaaS). However, the Broadcom-owned cybersecurity division said it identified clues that suggest the threat actors who deployed the ransomware may have been previously associated with INC ransomware (aka Warble). "A wide range of living off...

Most of this week's threats didn't rely on new tricks. They relied on familiar systems behaving exactly as designed, just in the wrong hands. Ordinary files, routine services, and trusted workflows were enough to open doors without forcing them. What stands out is how little friction attackers now need. Some activity focused on quiet reach and coverage, others on timing and reuse. The emphasis wasn't speed or spectacle, but control gained through scale, patience, and misplaced trust. The stories below trace where that trust bent, not how it broke. Each item is a small signal of a larger shift, best seen when viewed together. Spear-phishing delivers custom backdoor Operation Nomad Leopard Targets Afghanistan Government entities in Afghanistan have been at the receiving end of a spear-phishing campaign dubbed Operation Nomad Leopard that employs bogus administrative documents as decoys to distribute a backdoor named FALSECUB by means o...

A new malicious package discovered in the Python Package Index (PyPI) has been found to impersonate a popular library for symbolic mathematics to deploy malicious payloads, including a cryptocurrency miner, on Linux hosts. The package, named sympy-dev , mimics SymPy , replicating the latter's project description verbatim in an attempt to deceive unsuspecting users into thinking that they are downloading a "development version" of the library. It has been downloaded over 1,100 times since it was first published on January 17, 2026. Although the download count is not a reliable yardstick for measuring the number of infections, the figure likely suggests some developers may have fallen victim to the malicious campaign. The package remains available for download as of writing. According to Socket , the original library has been modified to act as a downloader for an XMRig cryptocurrency miner on compromised systems. The malicious behavior is designed to trigger only when ...