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.
GitHub is being abused to distribute the Lumma Stealer information-stealing malware as fake fixes posted in project comments. [...]
A campaign that started on August 5, 2024, is spreading a previously undocumented malware named "Voldemort" to organizations worldwide, impersonating tax agencies from the U.S., Europe, and Asia. [...]
Threat actors target Middle Eastern organizations with malware disguised as the legitimate Palo Alto GlobalProtect Tool that can steal data and execute remote PowerShell commands to infiltrate internal networks further. [...]
The Corona Mirai-based malware botnet is spreading through a 5-year-old remote code execution (RCE) zero-day in AVTECH IP cameras, which have been discontinued for years and will not receive a patch. [...]
The South Korea-aligned cyberespionage group APT-C-60 has been leveraging a zero-day code execution vulnerability in the Windows version of WPS Office to install the SpyGlace backdoor on East Asian targets. [...]
The APT33 Iranian hacking group has used new Tickler malware to backdoor the networks of organizations in the government, defense, satellite, oil and gas sectors in the United States and the United Arab Emirates. [...]
The APT33 Iranian hacking group has used new Tickler malware to backdoor the networks of organizations in the government, defense, satellite, oil and gas sectors in the United States and the United Arab Emirates. [...]
The Pidgin messaging app removed the ScreenShareOTR plugin from its official third-party plugin list after it was discovered that it was used to install keyloggers, information stealers, and malware commonly used to gain initial access to corporate networks. [...]
Microsoft is investigating an Exchange Online false positive issue causing emails containing images to be wrongly tagged as malicious and sent to quarantine. [...]