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.
Microsoft said it teamed up with Fortra and Health Information Sharing and Analysis Center (Health-ISAC) to tackle the abuse of Cobalt Strike by cybercriminals to distribute malware, including ransomware
Portuguese users are being targeted by a new malware codenamed CryptoClippy that's capable of stealing cryptocurrency as part of a malvertising campaign
Every year hundreds of millions of malware attacks occur worldwide, and every year businesses deal with the impact of viruses, worms, keyloggers, and ransomware. Malware is a pernicious threat and the biggest driver for businesses to look for cybersecurity solutions. Naturally, businesses want to find products that will stop malware in its tracks, and so they search for solutions to do that.
The threat actor behind the information-stealing malware known as Typhon Reborn has resurfaced with an updated version (V2) that packs in improved capabilities to evade detection and resist analysis
Chromium-based web browsers are the target of a new malware called Rilide that masquerades itself as a seemingly legitimate extension to harvest sensitive data and siphon cryptocurrency
The threat actor known as Arid Viper has been observed using refreshed variants of its malware toolkit in its attacks targeting Palestinian entities since September 2022
Microsoft has announced plans to automatically block embedded files with "dangerous extensions" in OneNote following reports that the note-taking service is being increasingly abused for malware delivery
A piece of new information-stealing malware called OpcJacker has been spotted in the wild since the second half of 2022 as part of a malvertising campaign. "OpcJacker's main functions include keylogging, taking screenshots, stealing sensitive data from browsers, loading additional modules, and replacing cryptocurrency addresses in the clipboard for hijacking purposes," Trend Micro researchers