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 Lampion malware is being distributed in greater volumes lately, with threat actors abusing WeTransfer as part of their phishing campaigns. [...]
A new version of the Bumblebee malware loader has been spotted in the wild, featuring a new infection chain that uses the PowerSploit framework for stealthy reflective injection of a DLL payload into memory. [...]
A new Iranian state-sponsored hacking group known as APT42 has been discovered using a custom Android malware to spy on targets of interest. [...]
The Mirai malware botnet variant known as 'MooBot' has re-emerged in a new attack wave that started early last month, targeting vulnerable D-Link routers with a mix of old and new exploits. [...]
Security researchers have discovered that Minecraft is the most heavily abused game title by cybercriminals, who use it to lure unsuspecting players into installing malware. [...]
A new stealthy Linux malware known as Shikitega has been discovered infecting computers and IoT devices with additional payloads. [...]
A new and upgraded version of the SharkBot malware has returned to Google's Play Store, targeting banking logins of Android users through apps that have tens of thousands of installations. [...]