Tag: malware
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AI-Enhanced BraZetsu Malware Powers Underground Market Selling Access to Corporate Networks
BraZetsu, a Python-based Windows malware framework allegedly operated by the Brazilian threat actor Exilware to identify, profile, and monetize compromised corporate systems. Rather than behaving like a conventional infostealer, BraZetsu appears designed to support an Initial Access Broker operation, converting infected endpoints into cataloged access offerings for an underground marketplace. The framework is reportedly the…
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Five Venezuelans plead guilty to ATM jackpotting attacks in US
Five Venezuelan nationals pleaded guilty to attempting to empty automated teller machines (ATMs) using malware in a series of ATM jackpotting attacks. First seen on bleepingcomputer.com Jump to article: www.bleepingcomputer.com/news/security/five-venezuelans-plead-guilty-to-atm-jackpotting-attacks-in-us/
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SLEEPWALKER Malware Uses Raw Packets, DNS and VMware VMCI for Covert Communications
A newly analyzed Windows backdoor named SLEEPWALKER uses a passive command-and-control model designed to evade conventional beaconing-based detections. Raw-packet activation, DNS-based tasking support, VMware VMCI communications, named-pipe capabilities, and in-memory payload execution. No threat actor, victim, delivery chain, or live campaign has yet been attributed to the malware. SLEEPWALKER is an unsigned 64-bit Windows DLL…
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Russia-Aligned UAC-0099 Plants Nuclear Weapon Prompt in Malware to Disrupt AI Analysis
Cybersecurity researchers have disclosed a new technique dubbed GuardBreaker that’s been put to use by a Russia-aligned threat actor known as UAC-0099 against a target in Ukraine with an aim to interfere with artificial intelligence (AI)-assisted analysis.The idea, ESET said in a series of posts on X, is to deliberately trip a large language model’s…
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ValleyRAT: When Legitimate Software Becomes a Malware Delivery Tool
ValleyRAT hides behind legitimate adware, using DLL sideloading to evade detection, steal data and give Silver Fox control of infected systems. ValleyRAT doesn’t always need to disguise itself as a cracked game or a fake browser update. It can also hide behind something much more ordinary: an application that looks like adware and appears to…
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Anthropic Warning: Infostealer Malware Is Hijacking Claude Sessions, Draining Accounts
Infostealer malware is stealing authenticated Claude browser sessions, letting attackers access paid AI accounts and consume victims’ usage allowances. First seen on esecurityplanet.com Jump to article: www.esecurityplanet.com/threats/news-claude-session-hijacking-infostealer-malware/
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Anthropic Warning: Infostealer Malware Is Hijacking Claude Sessions, Draining Accounts
Infostealer malware is stealing authenticated Claude browser sessions, letting attackers access paid AI accounts and consume victims’ usage allowances. First seen on esecurityplanet.com Jump to article: www.esecurityplanet.com/threats/news-claude-session-hijacking-infostealer-malware/
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AI Agents Can Infect Each Other: Mind Viruses and Turf Wars
Self-propagating instructions can spread through ordinary agent memory. Isolated agents with conflicting goals wrote malware to sabotage each other. First seen on securityboulevard.com Jump to article: securityboulevard.com/2026/08/ai-agents-can-infect-each-other-mind-viruses-and-turf-wars/
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Chrome and Edge Extensions Strip CSP and Inject JavaScript to Drain EVM, Solana and Tron Wallets
Research identified 19 malicious browser extensions 18 for Google Chrome and 1 for Microsoft Edge that use a modular malware framework to strip website Content Security Policy protections, inject attacker-controlled JavaScript. Socket determined that 14 extensions were created by the threat actor, while five were acquired from legitimate developers and subsequently weaponized. The most consequential…
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ValleyRAT Backdoor Hides in Signed Adware That Users Add to Antivirus Exclusions
The threat actor known as Silver Fox has been observed distributing the ValleyRAT backdoor disguised as a signed Chinese adware application, running the malware under a trusted process to slip past users who add such software to their antivirus exclusions.Russian cybersecurity vendor Kaspersky said the attackers built the disguise around QN Wallpaper, a genuine Chinese…
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Anthropic locks out Claude users after infostealers hijack login sessions
Anthropic has started locking users out of their Claude accounts due to their login sessions having been compromised through infostealer malware. >>The malware identified … First seen on helpnetsecurity.com Jump to article: www.helpnetsecurity.com/2026/08/31/claude-accounts-compromised-through-infostealer/
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Anthropic locks out Claude users after infostealers hijack login sessions
Anthropic has started locking users out of their Claude accounts due to their login sessions having been compromised through infostealer malware. >>The malware identified … First seen on helpnetsecurity.com Jump to article: www.helpnetsecurity.com/2026/08/31/claude-accounts-compromised-through-infostealer/
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Chrome und Edge: Mehrere Browser-Add-ons per Update mit Malware verseucht
Forscher haben 19 mit Malware verseuchte Browsererweiterungen für Chrome und Edge entdeckt. Der Schadcode wurde erst nachträglich eingeschleust. First seen on golem.de Jump to article: www.golem.de/news/chrome-und-edge-mehrere-browser-add-ons-per-update-mit-malware-verseucht-2608-212452.html
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Russian hackers plant nuclear weapon prompt in malware to trip AI safety guardrails
Russian state hackers are trying to interfere with AI-assisted malware analysis in Ukraine by deliberately setting off AI safety mechanisms, ESET has found. The technique, … First seen on helpnetsecurity.com Jump to article: www.helpnetsecurity.com/2026/08/31/russian-hackers-ai-safety-filters-manipulation/
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Hackers Use Infostealer Malware to Steal Claude Session Cookies and Hijack Accounts
Anthropic’s Claude AI platform is currently dealing with two separate cybercrime campaigns that aim to steal account credentials, misuse paid subscriptions, and reinstall malware even after a victim believes their device has been cleaned. In response to this threat, Anthropic has started invalidating compromised sessions, removing saved payment methods, and refunding verified fraudulent charges. While…
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Infostealer Infection Exposes Blind Eagle-Linked Operator’s Malware Production Pipeline
A compromised attacker-side workstation has given researchers an unusual view into the operational ecosystem behind a suspected Blind Eagle malware campaign, exposing RAT builders, phishing templates, bulk-mail tooling, crypter activity and infrastructure tracking records. Rather than directly exposing a modified executable, the account hosted a legitimate AutoIt interpreter alongside separately retrievable malicious script logic an…
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Simple Router DNS Tweak Blocks Malware and Phishing Across All Connected Devices
A recent router-level DNS change is gaining attention as a method to reduce exposure to phishing pages and malware across all devices connected to a home network. Cybersecurity expert Luis Catacora has recommended replacing a router’s default DNS resolvers with Cloudflare’s malware-filtering addresses: 1.1.1.2 as the primary resolver and 1.0.0.2 as the secondary. Simple Router…
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When Malware Does Math: The Arms Race Between Sandboxes and Self-Aware Threats
Modern malware can detect sandboxes and stay dormant, making inactivity a potential sign of evasion. First seen on esecurityplanet.com Jump to article: www.esecurityplanet.com/threats/when-malware-does-math-the-arms-race-between-sandboxes-and-self-aware-threats/
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BlueDelta Targets Defense and Diplomatic Organizations With HOOKEDGE Malware
Russian state-linked threat actor BlueDelta has launched a renewed espionage campaign against defense manufacturing, government, and diplomatic organizations in Romania, Spain, and Türkiye using a lightweight Windows backdoor dubbed HOOKEDGE. The activity, tracked from late September 2025 through early April 2026, relied on macro-enabled Microsoft Word documents and legitimate webhook infrastructure to establish access, execute…
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Hundreds of WordPress Sites Hijacked to Show Fake reCAPTCHA and Steal Windows Passwords.
Hundreds of compromised WordPress websites are being used in a sophisticated malware-delivery campaign that combines browser persistence, blockchain-hosted payloads, fake reCAPTCHA prompts and fileless execution to deploy the Amatera information stealer on Windows systems. The campaign stands out for placing its malicious logic across nine layers designed to minimize durable evidence: no conventional payload server,…
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Go Loader Uses Anti-Sandbox Checks and SNOWLIGHT to Execute Fileless VShell RAT in Memory
A Windows malware campaign disguised as a graduate-school resume has been observed delivering the SNOWLIGHT stager and a fileless VShell remote-access trojan (RAT) to targets likely associated with Chinese academic and technical research environments. The attack uses a custom 32-bit Go loader that performs sandbox checks, opens a legitimate-looking Word document as a decoy, and…
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Hackers Use Ethereum Smart Contracts to Keep New GoCaracal Malware Connected
Dark Caracal-linked operators are using Ethereum smart contracts as a resilient fallback mechanism for a newly identified Go-based malware framework called GoCaracal. Arctic Wolf Labs uncovered the framework while investigating a targeted intrusion in June 2026 against a communications organization in Venezuela. The company assesses, with medium confidence, that the activity is tied to Dark…
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Dark Caracal Deploys New Go Malware With Ethereum-Based C2 Fallback
Dark Caracal targets Venezuela with GoCaracal, an upgraded Bandook toolkit and an Ethereum fallback for resilient C2 communications. Dark Caracal is back with new malware and the same hunting grounds. Arctic Wolf Labs researchers link a June 2026 intrusion against a communications organisation in Venezuela to the Lebanon”‘linked espionage group, and says it deployed a…
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Fake GTA 6 Demo Spreads Malware: How to Spot the Scam
There is no legitimate GTA 6 demo. Fake Rockstar sites are distributing Vidar malware that targets passwords, cookies, and logged-in browser sessions. The post Fake GTA 6 Demo Spreads Malware: How to Spot the Scam appeared first on TechRepublic. First seen on techrepublic.com Jump to article: www.techrepublic.com/article/news-fake-gta-6-demo-malware-scam/
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Australian Police Charge Two Over TeamPCP Credential Theft
Australian police charged two men linked to TeamPCP over malware hidden in open-source code that stole 500,000+ credentials from 1,000+ organizations. Australian police have charged two men from Western Australia over a global cybercrime operation that allegedly hid malicious code in open-source software and used it to steal data from thousands of organisations. >>Two West…
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Arctic Wolf Labs entdeckt neues Malware-Framework <>
Ein neues Malware-Framework in zwei unterschiedlich umfangreichen Ausführungen und ein Ausweichmechanismus über die Ethereum-Blockchain: Arctic Wolf Labs hat bei der Untersuchung eines gezielten Angriffs auf eine Organisation aus dem Kommunikationssektor in Venezuela die bislang nicht dokumentierte Malware <> entdeckt. Arctic Wolf ordnet den Angriff mit mittlerer Sicherheit der Cyberspionage-Gruppe Dark Caracal zu. Die wichtigsten Erkenntnisse…
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GoCaracal Malware Uses Ethereum Smart Contract to Fetch Replacement C2 Address
Threat actors linked by Arctic Wolf to Dark Caracal with medium confidence deployed a previously undocumented Go-based malware framework, GoCaracal, during a June 2026 intrusion at an unnamed communications organization in Venezuela.GoCaracal provides operators with remote shell access and payload execution, while the extended profile adds browser data theft, keylogging, remote desktop control First seen…
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GoCaracal Malware Uses Ethereum Smart Contract to Fetch Replacement C2 Address
Threat actors linked by Arctic Wolf to Dark Caracal with medium confidence deployed a previously undocumented Go-based malware framework, GoCaracal, during a June 2026 intrusion at an unnamed communications organization in Venezuela.GoCaracal provides operators with remote shell access and payload execution, while the extended profile adds browser data theft, keylogging, remote desktop control First seen…
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FBI takes down China-linked hacking network behind attacks on NASA, DOJ and U.S. Senate
The Justice Department and FBI have seized domains tied to two hacking tools built and run by a Chinese state-sponsored group, cutting off access to malware that had been used … First seen on helpnetsecurity.com Jump to article: www.helpnetsecurity.com/2026/08/27/fbi-disrupts-china-linked-hacking-network/