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.
While monitoring the Emotet botnet's current activity, security researchers found that the malware is now being used by the Quantum and BlackCat ransomware gang to deploy their payloads. [...]
Cybersecurity researchers have exposed new connections between a widely used pay-per-install (PPI) malware service known as PrivateLoader and another PPI service dubbed ruzki
Malicious actors such as Kinsing are taking advantage of both recently disclosed and older security flaws in Oracle WebLogic Server to deliver cryptocurrency-mining malware
North Korean hackers are using trojanized versions of the PuTTY SSH client to deploy backdoors on targets' devices as part of a fake Amazon job assessment. [...]
Malware-laced ads are hauling in tens of millions of dollars in revenue for operators of pirated-content sites — posing a real risk to enterprises from remote employees.
A new malware bundle uses victims' YouTube channels to upload malicious video tutorials advertising fake cheats and cracks for popular video games to spread the malicious package further. [...]
Russian hackers have been targeting Ukrainian entities with previously unseen info-stealing malware during a new espionage campaign that is still active. [...]
Gamers looking for cheats on YouTube are being targeted with links to malicious password-protected archive files designed to install the RedLine Stealer malware and crypto miners on compromised machines
An ongoing espionage campaign operated by the Russia-linked Gamaredon group is targeting employees of Ukrainian government, defense, and law enforcement agencies with a piece of custom-made information stealing malware
Chinese cyberespionage hackers of the 'Webworm' group are undergoing experimentation, using modified decade-old RATs (remote access trojans) in the wild. [...]
Researchers link the APT to an attack on a Hong Kong university, which compromised multiple key servers using advanced Linux malware.
The report also suggested the Android spyware Joker took third place in the mobile index
State-backed Chinese hackers have developed a Linux variant for the SideWalk backdoor used against Windows systems belonging to targets in the academic sector. [...]
A Linux variant of a backdoor known as SideWalk was used to target a Hong Kong university in February 2021, underscoring the cross-platform abilities of the implant. Slovak cybersecurity firm ESET, which detected the malware in the university's network, attributed the backdoor to a nation-state actor dubbed SparklingGoblin. The unnamed university is said to have been already targeted by the
According to the 2022 Malwarebytes Threat review, 40M Windows business computers' threats were detected in 2021. And malware analysis is necessary to combat and avoid this kind of attack. In this article, we will break down the goal of malicious programs' investigation and how to do malware analysis with a sandbox. What is malware analysis? Malware analysis is a process of studying a malicious
Palo Alto Networks Unit 42 has detailed the inner workings of a malware called OriginLogger, which has been touted as a successor to the widely used information stealer and remote access trojan (RAT) known as Agent Tesla
Cyber spies are using legitimate apps for DLL sideloading, deploying an updated range of malware, including the new "Logdatter" info-stealer.
Hackers have injected malware in multiple extensions from FishPig, a vendor of Magento-WordPress integrations that count over 200,000 downloads. [...]
Government and state-owned organizations in a number of Asian countries have been targeted by a distinct group of espionage hackers as part of an intelligence gathering mission that has been underway since early 2021
Security researchers have identified new cyber-espionage activity focusing on government entities in Asia, as well as state-owned aerospace and defense firms, telecom companies, and IT organizations. [...]