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Zyxel adds enhancements and two new firewalls to its USG FLEX family of mid-range firewalls for SMBs
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Researchers Uncover 10,000+ Malware Loaders Behind YouTube and SEO Poisoning Campaign
Unit 42 uncovers CL-CRI-1171, a two-year pay-per-install campaign distributing 10,000+ OfferLoader samples via YouTube and SEO poisoning.
Palo Alto Networks Unit 42 tracked a campaign as CL-CRI-1171, an infection-as-a-service platform operating for at least two years. It used 11 YouTube gaming channels with hundreds of thousands of subscribers and SEO-poisoned download pages for trojanized WinDirStat and Bluetooth driver installers to distribute OfferLoader, a disposable loader embedded in Inno Setup installers. Payloads delivered included Insomnia RAT (Node.js and Python backdoors), ARKTunnel (a WebSocket-based RAT using LSB steganography), and Docro Hijacker (Chrome browser hijacker), with later infections delivering GCleaner and Socks5Systemz. Over 200 rotating domains across .xyz, .cfd, .space, and .info TLDs were used, with gating filters that served broken links or decoy pages to scanners and researchers.
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GoCaracal Malware Uses Ethereum Smart Contract to Fetch Replacement C2 Address
Arctic Wolf links new Go-based GoCaracal malware with Ethereum smart-contract C2 fallback to Dark Caracal, targeting a Venezuelan communications organization.
Arctic Wolf assessed with medium confidence that a June 2026 intrusion at an unnamed Venezuelan communications organization used GoCaracal, a previously undocumented Go-based malware framework linked to Dark Caracal. The lightweight profile provides encrypted C2, interactive shell access, and shellcode injection; the extended profile adds browser data theft, keylogging, WebRTC remote desktop, and SOCKS5 proxying. When the primary C2 server is unreachable, the malware queries an Ethereum smart contract via eth_getStorageAt at public JSON-RPC endpoints to fetch a replacement C2 address. Bandook was deployed in parallel, and Arctic Wolf published a YARA rule and indicators of compromise.
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40 Malicious Firefox Extensions Pose as Web3 Products to Steal Wallet Secrets
Socket found 40 malicious Firefox extensions impersonating OKX, Rabby Wallet, and TronLink to steal cryptocurrency wallet recovery phrases and private keys.
The Socket Threat Research team identified 40 malicious Firefox extensions masquerading as Web3 products including OKX, Rabby Wallet, and TronLink, part of a broader set of 77 add-ons sharing source code and infrastructure overlaps. The campaign, dubbed Offside Wallet Theft Factory, has been active since March 2026 and remains unattributed. Of the 40 confirmed malicious extensions, 15 capture recovery phrases and private keys exfiltrated through Cloudflare Workers, 13 modified Rabby Wallet builds exfiltrate serialized keyrings before local encryption, seven use attacker-controlled Supabase projects as remote switches, and five capture credentials and clipboard data via hard-coded C2. Some extensions began as sports score or utility shells before being repurposed into wallet stealers under the same Firefox ID.
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