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.
A new macOS information-stealing malware dubbed ClickLock terminates all visible processes to force users into entering their system login password. [...]
A financially motivated Russian threat actor tracked as UAT-11795 is using trojanized software to steal credentials and cryptocurrency by deploying a new backdoor called Starland RAT. [...]
A Russian-speaking threat actor known as "bandcampro" used Google's open-source Gemini CLI AI tool as a hacking agent and to operate a small-scale botnet. [...]
Five malicious versions of AsyncAPI packages were published to the Node Package Manager (npm) in a supply-chain attack that delivered a remote access trojan with info-stealing capabilities. [...]
A threat actor has published hundreds of fake GitHub repositories impersonating legitimate software and security projects to distribute infostealer malware. [...]
The U.S. Treasury Department's Office of Foreign Assets Control (OFAC) sanctioned two individuals and one entity for enabling ransomware attacks against U.S. organizations. [...]
The Jscrambler client-side web security company disclosed that a threat actor published a malicious version of its npm package that has been downloaded almost 1,500 times. [...]
A new macOS information-stealing malware called CrashStealer pretends to be Apple's crash-reporting tool to steal credentials, keychain data, and crypto wallets. [...]
A new version of the RedHook Android malware abuses the Android Wireless Debugging (Wireless ADB) mechanism in a novel way to gain shell-level privileges without requiring a computer connection. [...]