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.
An analysis of the destructive malware reveals sophisticated living-off-the-land (LotL) techniques and detailed strategies for the widespread deletion of data.
The North Korean group is using stolen victim videos, AI-generated avatars, and fake Zoom calls to scale malware attacks against cryptocurrency executives.
The malware has filled the gap created by last year's law enforcement takedowns of Lumma and Rhadamanthys.
Attackers continue to scale a campaign to seed Open VSX with seemingly benign VS Code extensions that spread self-propagating malware.
A newly discovered threat actor is using Microsoft Teams, AWS S3 buckets, and custom "Snow" malware in a multipronged campaign.
Researchers have uncovered a malware framework dubbed "fast16" that predates Stuxnet by five years.