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.
The North Korea-linked threat actor known as Lazarus Group has been observed exploiting a now-patched critical security flaw impacting Zoho ManageEngine ServiceDesk Plus to distribute a remote access trojan called such as QuiteRAT
The SmokeLoader malware is being used to deliver a new Wi-Fi scanning malware strain called Whiffy Recon on compromised Windows machines
A Syrian threat actor named EVLF has been outed as the creator of malware families CypherRAT and CraxsRAT
Developers are not the only people who have adopted the agile methodology for their development processes. From 2023-06-15 to 2023-07-11, Permiso Security’s p0 Labs team identified and tracked an attacker developing and deploying eight (8) incremental iterations of their credential harvesting malware while continuing to develop infrastructure for an upcoming (spoiler: now launched) campaign
A new variant of an Apple macOS malware called XLoader has surfaced in the wild, masquerading its malicious features under the guise of an office productivity app called "OfficeNote." "The new version of XLoader is bundled inside a standard Apple disk image with the name OfficeNote.dmg," SentinelOne security researchers Dinesh Devadoss and Phil Stokes said in a Monday analysis. "The application
Threat actors are leveraging access to malware-infected Windows and macOS machines to deliver a proxy server application and use them as exit nodes to reroute proxy requests
The threat actors behind the HiatusRAT malware have returned from their hiatus with a new wave of reconnaissance and targeting activity aimed at Taiwan-based organizations and a U.S. military procurement system