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.
The number of people who have made the weaponized software available for sharing via torrent suggests that many unsuspecting victims may have downloaded the XMRig coin miner.
A previously unidentified threat group uses open source malware and phishing to conduct cyber-espionage on shipping and medical labs associated with COVID-19 treatments and vaccines.
A novel threat group, utilizing new malware, is out in the wild. But the who, what, where, and why are yet to be determined, and there's evidence of a false-flag operation.
Cybercriminals and hacktivists have joined state-backed actors in using sabotage-bent malware in destructive attacks, new report shows.