FortiGuard Labs recently observed several targeted phishing campaigns in Taiwan that use themes designed to exploit local business processes. These campaigns disseminate Winos 4.0 (ValleyRat) and subsequent malicious plugins through weaponized attachments or embedded links.
The lures mimic official communications, such as tax audit notifications, tax filing software installers, and cloud-based e-invoice downloads. Fortinet researchers analysis of domain registration data reveals that attackers use a rotating set of domains and cloud services to host and distribute malware. The highly volatile nature of this infrastructure renders traditional, static domain blocking insufficient as a primary defense. Over the past two months, the researchers have identified various delivery techniques, including malicious LNK files used for a downloader.
Read more…
Source: Fortinet
Sign up for the Cyber Security Review Newsletter
The latest cyber security news and insights delivered right to your inbox
Related:
- Roundcube Releases Security Updates for Webmail
June 4, 2025
Roundcube has released versions 1.6.11 and 1.5.10 for its Webmail product. The updated versions address a critical severity vulnerability in the Webmail product. CVE-2025-49113 has a CVSSv3 score of 9.9 and is a “deserialisation of untrusted data” vulnerability. An authenticated remote attacker could exploit this vulnerability to achieve remote code execution. Read more… Source: NHS Digital Sign up for ...
- #StopRansomware: Play Ransomware
June 4, 2025
This joint Cybersecurity Advisory is part of an ongoing #StopRansomware effort to publish advisories for network defenders that detail various ransomware variants and ransomware threat actors. These #StopRansomware advisories include recently and historically observed tactics, techniques, and procedures (TTPs) and indicators of compromise (IOCs) to help organizations protect against ransomware. Visit stopransomware.gov to see all #StopRansomware ...
- Hello, Operator? A Technical Analysis of Vishing Threats
June 4, 2025
Organizations are increasingly relying on diverse digital communication channels for essential business operations. The way employees interact with colleagues, access corporate resources, and especially, receive information technology (IT) support is often conducted through calls, chat platforms, and other remote technologies. While these various available methods enhance both efficiency and global accessibility, they also introduce an expanded ...
- Android chipmaker Qualcomm fixes three zero-days exploited by hackers
June 3, 2025
Chipmaker giant Qualcomm released patches on Monday fixing a series of vulnerabilities in dozens of chips, including three zero-days that the company said may be in use as part of hacking campaigns. Qualcomm cited Google’s Threat Analysis Group, or TAG, which investigates government-backed cyberattacks, saying the three flaws “may be under limited, targeted exploitation.” According to ...
- From Ideology to Financial Gain: Exploring the Convergence from Hacktivism to Cybercrime
June 3, 2025
In the ever-evolving landscape of cyber threat actors, the lines between ideologically driven hacktivism and financially motivated cybercriminals have become increasingly blurred. Originally fueled by political, social, or ethical causes, hacktivist groups have historically engaged in digital protest through website defacements, data leaks, and distributed denial of service (DDoS) attacks. However, in recent years, a noticeable ...
- Host-based logs, container-based threats: How to tell where an attack began
June 3, 2025
Although containers provide an isolated runtime environment for applications, this isolation is often overestimated. While containers encapsulate dependencies and ensure consistency, the fact that they share the host system’s kernel introduces security risks. Based on Kaspersky security researchers experience providing Compromise Assessment, SOC Consulting, and Incident Response services to Kaspersky customers, the researchers have repeatedly seen ...