All news with #phishing tag

Global Phishing Campaign Distributes UpCrypter Loader

📧 FortiGuard Labs identified a global phishing campaign that uses crafted HTML email attachments and personalized phishing pages to deliver obfuscated JavaScript droppers which stage the UpCrypter loader on Microsoft Windows systems. The attack uses target-specific URL reconstruction, convincing domain and logo spoofing, and prompts victims to run a bundled JavaScript dropper. The dropper decodes and executes a Base64 PowerShell payload that performs anti-analysis checks, loads an MSIL loader directly into memory, and ultimately deploys multiple RATs (PureHVNC, DCRat, Babylon RAT). Organizations should apply layered email filtering, endpoint least-privilege, and script/memory-aware detection to block these artifacts.

Phishing Campaign Exploits Google Classroom: 115K Emails

📚 Check Point researchers uncovered a large-scale phishing campaign that abused Google Classroom to deliver more than 115,000 malicious emails in five coordinated waves over a single week. Attackers used fake classroom invitations carrying unrelated commercial offers to trick recipients across Europe, North America, the Middle East and Asia. The campaign targeted roughly 13,500 organizations and highlights risks when trusted collaboration tools are weaponized.

Linux Backdoor Delivered via Malicious RAR Filenames

🛡️ Trellix researchers describe a Linux-focused infection chain that uses a malicious RAR filename to trigger command execution. The filename embeds a Base64-encoded Bash payload that leverages shell command injection when untrusted filenames are parsed, allowing an ELF downloader to fetch and run an architecture-specific binary. The chain ultimately delivers the VShell backdoor, which runs in memory to evade disk-based detection.

Phishing Campaign Targets Ledger Users with Fake Update

🔒 A sophisticated phishing campaign impersonating Ledger targets Nano X and Nano S Plus users with an urgent fake firmware update notice. The email claims fragments of private keys were leaked and urges immediate action, but the sender and update domains are not affiliated with Ledger. A professionally designed scam site hosted on an unrelated domain uses a support chat to coax victims into entering their seed phrase, which grants full wallet access. Organizations and individuals should treat unsolicited firmware alerts cautiously and use trained security controls and awareness to avoid compromise.

Microsoft announces Phishing Triage Agent public preview

🛡️The Phishing Triage Agent is now in Public Preview and automates triage of user-reported suspicious emails within Microsoft Defender. Using large language models, it evaluates message semantics, inspects URLs and attachments, and detects intent to classify submissions—typically within 15 minutes—automatically resolving the bulk of false positives. Analysts receive natural‑language explanations and a visual decision map for each verdict, can provide plain‑language feedback to refine behavior, and retain control via role‑based access and least‑privilege configuration.

New DarkCloud Stealer Infection Chain Uses ConfuserEx

🔒 Unit 42 observed a new DarkCloud Stealer infection chain in early April 2025 that employs ConfuserEx-based obfuscation and a final Visual Basic 6 payload. Phishing TAR/RAR/7Z archives deliver obfuscated JavaScript or WSF downloaders which retrieve a PowerShell stage from open directories and drop a ConfuserEx-protected executable. The loaders are heavily protected with javascript-obfuscator and the variant follows prior AutoIt-based deliveries. Palo Alto Networks notes that Advanced WildFire, Advanced URL Filtering, Advanced DNS Security, Cortex XDR and XSIAM can help detect and mitigate these stages and recommends contacting Unit 42 for incident response.