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.
It turns out that a powerful security solution can double as even more powerful malware, capable of granting comprehensive access over a targeted machine.
Two new code-execution techniques, Poison Fiber and Phantom Thread, take advantage of a little-known Windows OS workhorse to sneak shellcode and other malware onto victim machines.
"Kapeka" and "Fuxnext" are the latest examples of malware to emerge from the long-standing conflict between the two countries.
Kaspersky researchers discovered the new variant after responding to a critical incident targeting an organization in West Africa.