The Malware tag covers malware families, infrastructure analysis, incident impact, disruption efforts, and defensive guidance to reduce cybersecurity risk.
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Background for this topic.
Malware is software intentionally created or modified to perform unauthorized or harmful actions on a computer, device, or network. The term covers distinct families and functions, including viruses, worms, trojans, spyware, botnet clients, and ransomware; a single sample may combine several capabilities. Its behavior—not its label—determines the security concern: it may execute code, persist, alter or encrypt data, steal credentials, or provide unauthorized remote access.
For practitioners, malware reporting is most useful when it identifies the family or tool conservatively and provides evidence such as affected platforms, samples, infrastructure, or observed behavior. Defenses include promptly patching vulnerable software, restricting execution and privileges, monitoring endpoints and networks, maintaining tested backups, and isolating suspected systems for analysis. Detection should use behavior and verified indicators rather than names alone, since variants change. If malware processes personal or regulated data, investigations should also address privacy, evidence preservation, and applicable reporting obligations.
Security researchers have identified a new data-wiping malware they named SwiftSlicer that aims to overwrite crucial files used by the Windows operating system. [...]
The Ukrainian Computer Emergency Response Team (CERT-UA) found a cocktail of five different data-wiping malware strains deployed on the network of the country's national news agency (Ukrinform) on January 17th. [...]
Security researchers have analyzed a variant of the PlugX malware that can hide malicious files on removable USB devices and then infect the Windows hosts they connect to. [...]
Hackers have leveraged a critical remote code execution vulnerability in Realtek Jungle SDK 134 million attacks trying to infect smart devices in the second half of 2022. [...]
A new Python-based malware has been spotted in the wild featuring remote access trojan (RAT) capabilities to give its operators control over the breached systems. [...]
A threat actor tracked as DEV-0569 uses Google Ads in widespread, ongoing advertising campaigns to distribute malware, steal victims' passwords, and ultimately breach networks for ransomware attacks. [...]
Microsoft is working on adding XLL add-in protection for Microsoft 365 customers by including automated blocking of all such files downloaded from the Internet. [...]