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.
Between July and September, DarkGate malware attacks have used compromised Skype accounts to infect targets through messages containing VBA loader script attachments. [...]
The botnet — built for DDoS, backdooring, and dropping malware — is evading standard URL signature detections with a novel approach involving Hex IP addresses.
The botnet — built for DDoS, backdooring, and dropping malware — is evading standard URL signature detections with a novel approach.
A piece of malware known as DarkGate has been observed being spread via instant messaging platforms such as Skype and Microsoft Teams
Almost a year after Void Rabisu shifted its targeting from opportunistic ransomware attacks with an emphasis on cyberespionage, the threat actor is still developing its main malware, the ROMCOM backdoor.
A plurality of the targets in the ongoing campaign have been based in the Americas.
A plurality of the targets in the ongoing campaign have been based in the Americas.
Popular malware like QakBot and DarkGate rely on VBScript, which dates back to 1996 — but their days are numbered now that Microsoft is finally deprecating the Windows programming. language.
A newly discovered campaign dubbed "Stayin' Alive" has been targeting government organizations and telecommunication service providers across Asia since 2021, using a wide variety of "disposable" malware to evade detection. [...]
Evasive malware disguised as a caching plugin allows attackers to create an admin account on a WordPress site, then take over and monetize sites at the expense of legitimate SEO and user privacy.
The threat actors behind ShellBot are leveraging IP addresses transformed into its hexadecimal notation to infiltrate poorly managed Linux SSH servers and deploy the DDoS malware
Cybersecurity researchers have shed light on a new sophisticated strain of malware that masquerades a WordPress plugin to stealthily create administrator accounts and remotely control a compromised site
High-profile government and telecom entities in Asia have been targeted as part of an ongoing campaign since 2021 that's designed to deploy basic backdoors and loaders for delivering next-stage malware
We detail an ongoing campaign abusing messaging platforms Skype and Teams to distribute the DarkGate malware to targeted organizations. We also discovered that once DarkGate is installed on the victim’s system, additional payloads were introduced to the environment.
A new malware has been posing as a legitimate caching plugin to target WordPress sites, allowing threat actors to create an administrator account and control the site's activity. [...]
A sophisticated APT known as "ToddyCat," sponsored by Beijing, is cleverly using unsophisticated malware to keep defenders off their trail.
More than 17,000 WordPress websites have been compromised in the month of September 2023 with malware known as Balada Injector, nearly twice the number of detections in August
Threat intel experts see a reduced focus on desktop malware as threat groups prioritize passwords and tokens that let them access the same systems as remote workers.
A Mirai-based DDoS (distributed denial of service) malware botnet tracked as IZ1H9 has added thirteen new payloads to target Linux-based routers and routers from D-Link, Zyxel, TP-Link, TOTOLINK, and others. [...]
Microsoft is planning to phase out VBScript in future Windows releases after 30 years of use, making it an on-demand feature until it is removed. [...]