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.
Malware Not Yet Deployed in the Wild, Says EsetNew malware dubbed HybridPetya spotted on VirusTotal is adding to steadily growing pile of bootkits, creating more opportunities for hackers to infect desktops before the operating system and antivirus programs load. No telemetry exists showing HybridPetya has been deployed in the wild.
Cybersecurity researchers have discovered a new ransomware strain dubbed HybridPetya that resembles the notorious Petya/NotPetya malware, while also incorporating the ability to bypass the Secure Boot mechanism in Unified Extensible Firmware Interface (UEFI) systems using a now-patched vulnerability disclosed earlier this year
With legit sounding names, EvilAI's "productivity" apps are reviving classic threats like Trojans while adding new evasion capabilities against modern antivirus defenses.
A sophisticated fileless malware campaign has been observed using legitimate tools to deliver AsyncRAT executed in memory
Bitdefender said the sophisticated multi-stage operation allowed attackers to maintain persistent access and steal sensitive data from a Philippines military company
Ovoid-themed in-memory malware offers a menu for mayhem ‘EggStreme’ framework looks like the sort of thing Beijing would find handy in its ongoing territorial beefs Infosec outfit Bitdefender says it’s spotted a strain of in-memory malware that looks like the work of Chinese advanced persistent threat groups that wanted to achieve persistent access at a “military company” in the Philippines.…
Combining AI-generated code and social engineering, EvilAI operators are executing a rapidly expanding campaign, disguising their malware as legitimate applications to bypass security, steal credentials, and persistently compromise organizations worldwide.
'We do believe that this was likely the creation of a cybercrime group,' threat hunter tells The Reg ChillyHell, a modular macOS backdoor believed to be long dormant, has likely been infecting computers for years while flying under the radar, according to security researchers who spotted a malware sample uploaded to VirusTotal in May.…
An advanced persistent threat (APT) group from China has been attributed to the compromise of a Philippines-based military company using a previously undocumented fileless malware framework called EggStreme
Cybersecurity researchers have discovered two new malware families, including a modular Apple macOS backdoor called CHILLYHELL and a Go-based remote access trojan (RAT) named ZynorRAT that can target both Windows and Linux systems
With multiple persistence mechanisms, the modular malware can brute-force passwords, drop payloads, and communicate over different protocols.
Miscreants cost victims time rather than money During the two-hour window on Monday in which hijacked npm versions were available for download, malware-laced packages reached one in 10 cloud environments, according to Wiz researchers. But crypto-craving crims did little more than annoy defenders.…
Attacker Socially Engineered Developer With Phishing EmailA hacker laced 18 popular npm packages with cryptocurrency stealing malware after socially engineering the developer into giving up his credentials to the JavaScript runtime environment. Aikido Security said the 18 software packages collectively have downloads of more than two billion each week.
A new Android malware called RatOn evolved from a basic tool capable of conducting Near Field Communication (NFC) attacks to a sophisticated remote access trojan with Automated Transfer System (ATS) capabilities to conduct device fraud
Cybersecurity researchers have disclosed details of a phishing campaign that delivers a stealthy banking malware-turned-remote access trojan called MostereRAT
At least 18 popular JavaScript code packages that are collectively downloaded more than two billion times each week were briefly compromised with malicious software today, after a developer involved in maintaining the projects was phished. The attack appears to have been quickly contained and was narrowly focused on stealing cryptocurrency. But experts warn that a similar attack with a slightly more nefarious payload could quickly lead to a disruptive malware outbreak that is far more difficult to detect and restrain.
GhostRedirector Compromising Windows Servers in Brazil, Thailand and VietnamA suspected Chinese cybercrime group is deploying custom malware to compromise Windows servers in Brazil, Thailand, Portugal and Vietnam as part of search engine optimization fraud to promote gambling websites.
A threat actor is using a sophisticated EDR-killing malware tool in a campaign to maintain long-term, persistent access on Windows systems.
In what is being called the largest supply chain attack in history, attackers have injected malware into NPM packages with over 2.6 billion weekly downloads after compromising maintainers' accounts in a phishing attack. [...]
Cybersecurity researchers have detailed a new sophisticated malware campaign that leverages paid ads on search engines like Google to deliver malware to unsuspecting users looking for popular tools like GitHub Desktop