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:
- VPNFilter’s Arsenal Expands With Newly Discovered Modules
September 26, 2018
Seven new modules discovered in VPNFilter further fill in the blanks about how the malware operates and reveals a wider breath of capabilities. Researchers have discovered new modules in VPNFilter – the malware behind the widespread campaign in May that infected 75 router brands – revealing that its capabilities are much more widespread and sophisticated than previously thought. After ...
- New Linux Kernel Bug Affects Red Hat, CentOS, and Debian Distributions
September 26, 2018
Security researchers have published the details and proof-of-concept (PoC) exploits of an integer overflow vulnerability in the Linux kernel that could allow an unprivileged user to gain superuser access to the targeted system. The vulnerability, discovered by cloud-based security and compliance solutions provider Qualys, which has been dubbed “Mutagen Astronomy,” affects the kernel versions released between ...
- Over 80 Cisco Products Affected by FragmentSmack DoS Bug
September 25, 2018
Cisco is currently looking into its product line to determine which products and services use Linux kernel 3.9 or above, which is vulnerable to the FragmentSmack denial-of-service (DoS) bug. The networking hardware manufacturer already assembled a list of more than 80 products that are affected by the vulnerability. Many of them expect a fix by February ...
- macOS Mojave Privacy Bypass Flaw Allows Access to Protected Files
September 24, 2018
A security researcher shows on Mojave’s release day that Apple’s latest privacy protection implementations in macOS are not sufficiently strong. In a minute-long clip, Patrick Wardle shows that the security in the dark-themed macOS can be bypassed to reach sensitive user data, such as the information in the address book. Talking to BleepingComputer, Wardle says that he ...
- Adwind RAT Scurries By AV Software With New DDE Variant
September 24, 2018
A newly-discovered spam campaign is spreading the Adwind 3.0 remote-access tool (RAT) – and using a fresh take on the Dynamic Data Exchange (DDE) code-injection technique for anti-virus evasion. The spam campaign features two types of droppers that leverage a new variant to the already-known DDE code-injection attack on Microsoft Excel – enabling them to bypass ...
- New Virobot malware works as ransomware, keylogger, and botnet
September 21, 2018
A newly discovered malware strain is a multi-tasking threat that besides working as ransomware and encrypting users’ files, it can also log and steal their keystrokes, and add infected computers to a spam-sending botnet. This new threat is named Virobot and appears to be under development, and comprised of multiple components that allow it to work ...