All news with #malware tag

📱 A new Android spyware campaign known as ClayRat has been observed targeting users in Russia through fake app installers and Telegram channels. Operators impersonate popular apps such as WhatsApp, TikTok, Google Photos, and YouTube to trick victims into sideloading APKs or running lightweight droppers that reveal hidden encrypted payloads. Once active, the malware requests default SMS status and can exfiltrate SMS, call logs, notifications, device details, take photos, and even send messages or place calls while automatically propagating to contacts. Zimperium reports roughly 600 samples and 50 droppers detected in the last 90 days, with continuous obfuscation to evade defenses.

🔔 A fast-evolving Android spyware campaign dubbed ClayRat has produced over 600 samples and 50 droppers in three months, researchers say. The malware is distributed via phishing sites and Telegram channels that impersonate popular apps like TikTok, YouTube and Google Photos to trick users into sideloading infected APKs. Once granted SMS privileges, ClayRat can read and send messages, harvest contacts and call logs, take front-camera photos, exfiltrate data to C2 servers, and automatically text malicious links to all contacts, turning each compromised device into a propagation hub.

🛡️Researchers at Zimperium zLabs have identified a rapidly evolving Android spyware campaign, dubbed ClayRat, targeting users in Russia via Telegram channels and phishing sites. The malware is distributed inside fake apps impersonating services such as WhatsApp, TikTok, Google Photos and YouTube, and operators are using fake reviews, download counts and step-by-step guides to trick victims. Once granted privileges, ClayRat can exfiltrate SMS, call logs and notifications, take front-camera photos, and even send messages or place calls while abusing Android's SMS handler role. Security firms report over 600 samples and coordinated disclosure to Google resulted in Play Protect protections.

🔍 Ukraine's SSSCIP reported a sharp rise in AI-enabled cyber operations in H1 2025, documenting 3,018 incidents versus 2,575 in H2 2024. Analysts found evidence that attackers used AI not only to craft phishing lures but also to generate malware samples, including a PowerShell stealer identified as WRECKSTEEL. Multiple UAC clusters—such as UAC-0219, UAC-0218, and UAC-0226—deployed stealers and backdoors via booby-trapped archives, SVG attachments, and ClickFix-style tactics. The report also details zero-click exploitation of Roundcube and Zimbra flaws and widespread abuse of legitimate cloud and collaboration services for hosting and data exfiltration.

⚠️ A new FileFix variant uses cache smuggling to deliver a malicious ZIP via Chrome's disk cache while impersonating a Fortinet VPN Compliance Checker, tricking victims into pasting a crafted path into File Explorer. The embedded PowerShell command extracts a hidden ZIP from cached image files, writes a ComplianceChecker.zip and launches an executable, enabling execution without obvious downloads. Security firms report rapid abuse by ransomware and info-stealer operators and advise training users never to paste clipboard content into OS dialogs.

🔒 Security researchers warn of an active campaign that modifies WordPress theme files (notably functions.php) to inject malicious JavaScript that redirects visitors to fraudulent verification and malware distribution pages. The injected loader uses obfuscated references to advertising services but posts to a controller domain that serves a remote script from porsasystem[.]com and an iframe mimicking Cloudflare assets. The activity has ties to the Kongtuke traffic distribution system and highlights the need to patch themes, enforce strong credentials, and scan for persistent backdoors.

⚠️ Chaos-C++ is a resurfaced C++ ransomware strain identified in 2025 that combines fast AES encryption, deliberate deletion of very large files, and a clipboard-hijacking capability to steal cryptocurrency payments. It employs a stealthy downloader that masquerades as a system optimizer, uses Windows CryptoAPI where available and a weaker XOR fallback otherwise, and appends a .chaos extension to affected files. Victims also see destructive post-infection commands that remove shadow copies and hinder recovery, and ForsGuard detections are available for protection.

🛡️ OpenAI said it disrupted three clusters that misused ChatGPT to assist malware development, including Russian-language actors refining a RAT and credential stealer, North Korean operators tied to Xeno RAT campaigns, and Chinese-linked accounts targeting semiconductor firms. The company also blocked accounts used for scams, influence operations, and surveillance assistance and said actors worked around direct refusals by composing building-block code. OpenAI emphasized that models often declined explicit malicious prompts and that many outputs were not inherently harmful on their own.

🛡️ Trellix researchers detail the return of XWorm 6.0, a modular Windows malware now supporting more than 35 in‑memory DLL plugins and expanded data-theft and persistence capabilities. The actor associated with earlier releases, known as XCoder, is of uncertain status, but v6.0—advertised on forums in June 2025—appears to address a prior RCE flaw while enabling credential theft, keylogging, screen capture, and optional ransomware. Campaigns use phishing, malicious JavaScript, LNK-based PowerShell chains, and process injection to evade detection and execute plugins directly in memory.

🛡️ New variants of the XWorm backdoor (6.0, 6.4, 6.5) are being distributed via phishing campaigns after the original author, XCoder, abandoned the project. Multiple operators have adopted these builds, which now support more than 35 plugins enabling data theft, remote control, and a ransomware module that encrypts user files and drops HTML ransom notes. Trellix observed diverse droppers and recommends layered defenses including EDR, email/web protections, and network monitoring.

📄 PDF files are a ubiquitous, convenient format that cybercriminals increasingly abuse as lures, with ESET telemetry placing PDFs among the top malicious attachment types. Attack techniques include embedded scripts, hidden links, malformed objects that exploit reader vulnerabilities, and files that merely masquerade as .pdf while actually being executables or archives. Verify sender context, enable Protected View or sandboxing, consider disabling JavaScript in your PDF reader, and scan or sandbox suspicious attachments before opening; when in doubt, confirm via a separate channel.

🔍 Cisco Talos warns a Chinese‑speaking threat group tracked as UAT-8099 is actively compromising misconfigured Microsoft IIS servers to run SEO fraud and harvest high-value data. The actors favor high-reputation domains in universities, technology firms, and telecom providers across India, Thailand, Vietnam, Canada and Brazil to reduce detection. They exploit unrestricted file uploads to install web shells, escalate a guest account to admin, enable RDP and deploy the BadIIS SEO malware, then persist with hidden accounts and VPN/backdoor tools. Talos has published indicators and mitigation guidance, including blocking script execution in upload folders, disabling RDP and enabling MFA.

🛡️ Infoblox links a threat actor dubbed Detour Dog to campaigns distributing the Strela Stealer, using compromised WordPress sites to host first-stage backdoors such as StarFish. The actor leverages DNS TXT records and modified name servers to deliver Base64-encoded commands and delivery URLs, selectively triggering redirects or remote execution to minimize detection. Infoblox and Shadowserver sinkholed multiple C2 domains in July–August 2025.

🛡️ Check Point researchers report that the Rhadamanthys information stealer (v0.9.2) has been updated to collect extensive device and browser fingerprints and to deliver payloads via steganography embedded in WAV, JPEG and PNG files. The operator—initially known as kingcrete2022 and now marketing as RHAD security/Mythical Origin Labs—offers the malware as a tiered MaaS product with subscription plans and enterprise options. The sample includes sandbox-evasion checks, an embedded Lua runner for plugins, obfuscated configurations, and a PNG-based payload decryption step that requires a shared secret.

🔍 A Chinese-speaking cybercrime group tracked as UAT-8099 is hijacking trusted Microsoft IIS servers worldwide to run SEO scams that redirect users to unauthorized adverts and illegal gambling sites. According to Cisco Talos, attackers exploit server vulnerabilities, upload web shells, and conduct reconnaissance before enabling the guest account, escalating privileges and activating RDP. For persistence they deploy SoftEther VPN, EasyTier and the FRP reverse proxy and install the BadIIS malware variants designed to evade detection.

⚠️ Trend Micro has uncovered a self-propagating malware campaign named SORVEPOTEL that primarily targets Brazilian Windows users via WhatsApp. The attack is delivered through convincing phishing messages with malicious ZIP attachments that contain LNK shortcuts which trigger PowerShell to download a batch payload. The payload establishes persistence by copying itself to the Windows Startup folder and contacts a command-and-control server, and if WhatsApp Web is active the malware automatically forwards the infected ZIP to contacts and groups, causing rapid spread and frequent account bans. Researchers report no evidence of data exfiltration or file encryption so far.

📄 Researchers at Varonis have identified a sophisticated phishing toolkit called MatrixPDF that embeds prompts, JavaScript, and external redirects inside seemingly legitimate PDF files to target Gmail users. Attackers exploit Gmail's preview and desktop PDF readers: a blurred preview displays a prompt to 'open secure document' that directs victims to external payloads, while embedded scripts can fetch malware if a user grants permission. Because the malicious content is only retrieved after user interaction, Gmail's automated scanners and attachment sandboxes can be bypassed. Security experts recommend stronger webmail controls, robust attachment sandboxing, endpoint detection, and frequent, realistic user awareness training.

⚠️ Cybersecurity researchers flagged a malicious PyPI package named soopsocks that claimed to provide a SOCKS5 proxy while delivering stealthy backdoor functionality on Windows. The package, uploaded by user 'soodalpie' on September 26, 2025, had 2,653 downloads before removal and used VBScript or an executable (_AUTORUN.VBS/_AUTORUN.EXE) to bootstrap additional payloads. Analysts at JFrog reported the executable is a compiled Go binary that runs PowerShell, adjusts firewall rules, elevates privileges, performs reconnaissance and exfiltrates data to a hard-coded Discord webhook.

🔐 FortiGuard Labs documents the Confucius espionage group’s shift from document-stealing malware to a stealthy Python-based backdoor targeting Microsoft Windows. Recent campaigns used spear-phishing with weaponized Office PPSX files, malicious LNK loaders, and staged PowerShell installers to deploy runtimes and execute AnonDoor modules. The actor leveraged DLL side-loading, scheduled tasks, and HKCU registry Load persistence to maintain stealth and periodic execution. Fortinet urges layered defenses, updated signatures, and user training to mitigate these threats.

🔒 Two newly identified Android spyware campaigns, dubbed ProSpy and ToSpy, impersonate Signal and ToTok to trick users into installing malicious APKs masquerading as a Signal encryption plugin or a Pro ToTok build. The malware requests standard messenger permissions and exfiltrates contacts, SMS, media, app lists and ToTok backups. ESET found distribution via cloned websites and noted persistence techniques to survive reboots. Users in the UAE appear to be targeted; download apps only from official stores or publishers and keep Play Protect enabled.