The Malware tag covers malware families, infrastructure analysis, incident impact, disruption efforts, and defensive guidance to reduce cybersecurity risk.
Search across headline titles and summaries.
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 Emotet malware is now distributed using Microsoft OneNote email attachments, aiming to bypass Microsoft security restrictions and infect more targets. [...]
An Android voice phishing (aka vishing) malware campaign known as FakeCalls has reared its head once again to target South Korean users under the guise of over 20 popular financial apps
Most of these apps rely on clipper malware to steal the contents of the Android clipboard
Ukraine's cyberpolice has arrested the developer of a remote access trojan (RAT) malware that infected over 10,000 computers while posing as game applications. [...]
A new Golang-based botnet dubbed HinataBot has been observed to leverage known flaws to compromise routers and servers and use them to stage distributed denial-of-service (DDoS) attacks
Copycat websites for instant messaging apps like Telegram and WhatApp are being used to distribute trojanized versions and infect Android and Windows users with cryptocurrency clipper malware
Looks to be the same baddies attacking VMware hypervisors last year Suspected Chinese spies have exploited a critical Fortinet bug, and used custom networking malware to steal credentials and maintain network access, according to Mandiant security researchers.…
Android malware 'FakeCalls' is circulating again in South Korea, imitating phone calls for over 20 financial organizations and attempting to fool targets into giving away their credit card details. [...]
A suspected Chinese hacking group has been linked to a series of attacks on government organizations exploiting a Fortinet zero-day vulnerability (CVE-2022-41328) to deploy malware. [...]
Cybercriminals are abusing Adobe Acrobat Sign, an online document signing service, to distribute info-stealing malware to unsuspecting users. [...]
Threat activity clusters affiliated with the Chinese and Russian cybercriminal ecosystems have been observed using a new piece of malware that's designed to load Cobalt Strike onto infected machines
The cryptojacking group known as TeamTNT is suspected to be behind a previously undiscovered strain of malware used to mine Monero cryptocurrency on compromised systems
An advanced hacking group named 'Winter Vivern' targets European government organizations and telecommunication service providers to conduct espionage. [...]
Cobalt Strike beacon loader migrates across criminal ecosystems
The hacker breached the DLP company's internal update servers to deliver malware within its network
CPR discovered 2500 samples of the malware, impersonating 20 financial institutions in the region
The new malware was discovered targeting three banks in Brazil.
A cyberespionage actor known as Tick has been attributed with high confidence to a compromise of an East Asian data-loss prevention (DLP) company that caters to government and military entities
Microsoft has patched another zero-day bug used by attackers to circumvent the Windows SmartScreen cloud-based anti-malware service and deploy Magniber ransomware payloads without raising any red flags. [...]
An analysis of trillions of DNS requests show a shocking amount of malicious traffic inside enterprise networks, with the stalwart malware Emotet and the botnet QSnatch among the top threats.