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DragonForce ransomware used a custom malware named 'Backdoor.Turn' to hide command-and-control traffic inside Microsoft Teams relay infrastructure. [...]
A Chinese espionage group tracked as UNC5221 has been accessing Microsoft 365 environments using the Brickstorm backdoor and previously undocumented malware named Plenet and AgentPSD. [...]
A fake version for the Claude AI website offers a malicious Claude-Pro Relay download that pushes a previously undocumented backdoor for Windows named Beagle. [...]
A threat group tracked as UNC6692 uses social engineering to deploy a new, custom malware suite named 'Snow' which includes a browser extension, a tunneler, and a backdoor. [...]
A Linux variant of the GoGra backdoor uses legitimate Microsoft infrastructure, relying on an Outlook inbox for stealthy payload delivery. [...]
Ransomware threat actors tracked as Velvet Tempest are using the ClickFix technique and legitimate Windows utilities to deploy the DonutLoader malware and the CastleRAT backdoor. [...]
The Microsoft Defender team has discovered a coordinated campaign targeting software developers through malicious repositories posing as legitimate Next.js projects and technical assessment materials, including recruiting coding tests. [...]
Microsoft security researchers have discovered a new backdoor malware that uses the OpenAI Assistants API as a covert command-and-control channel. [...]
Hackers have been spotted using SEO poisoning and search engine advertisements to promote fake Microsoft Teams installers that infect Windows devices with the Oyster backdoor, providing initial access to corporate networks. [...]
A new Linux backdoor called 'WolfsBane' has been discovered, believed to be a port of Windows malware used by the Chinese 'Gelsemium' hacking group. [...]
A new phishing campaign dubbed 'CRON#TRAP' infects Windows with a Linux virtual machine that contains a built-in backdoor to give stealthy access to corporate networks. [...]
The South Korea-aligned cyberespionage group APT-C-60 has been leveraging a zero-day code execution vulnerability in the Windows version of WPS Office to install the SpyGlace backdoor on East Asian targets. [...]
Unknown attackers have deployed a newly discovered backdoor dubbed Msupedge on a university's Windows systems in Taiwan, likely by exploiting a recently patched PHP remote code execution vulnerability (CVE-2024-4577). [...]
A never-before-seen Windows malware named 'Warmcookie' is distributed through fake job offer phishing campaigns to breach corporate networks. [...]
Microsoft says that a group of Iranian-backed state hackers are targeting high-profile employees of research organizations and universities across Europe and the United States in spearphishing attacks pushing new backdoor malware. [...]
Microsoft says the APT33 Iranian cyber-espionage group is using recently discovered FalseFont backdoor malware to attack defense contractors worldwide. [...]
Microsoft says that the North Korean Lazarus and Andariel hacking groups are exploiting the CVE-2023-42793 flaw in TeamCity servers to deploy backdoor malware, likely to conduct software supply chain attacks. [...]
Microsoft and the Ukraine CERT warn of new attacks by the Russian state-sponsored Turla hacking group, targeting the defense industry and Microsoft Exchange servers with a new 'DeliveryCheck' malware backdoor. [...]
VMware patched today a VMware ESXi zero-day vulnerability exploited by a Chinese-sponsored hacking group to backdoor Windows and Linux virtual machines and steal data. [...]
A new PowerShell-based malware dubbed PowerExchange was used in attacks linked to APT34 Iranian state hackers to backdoor on-premise Microsoft Exchange servers. [...]