storm – PossibleThreat Articles

Credit to Author: Microsoft Threat Intelligence| Date: Thu, 31 Oct 2024 17:00:00 +0000

Since August 2023, Microsoft has observed intrusion activity targeting and successfully stealing credentials from multiple Microsoft customers that is enabled by highly evasive password spray attacks. Microsoft has linked the source of these password spray attacks to a network of compromised devices we track as CovertNetwork-1658, also known as xlogin and Quad7 (7777). Microsoft is […]

The post Chinese threat actor Storm-0940 uses credentials from password spray attacks from a covert network appeared first on Microsoft Security Blog.

Microsoft Security

Storm-0501: Ransomware attacks expanding to hybrid cloud environments

September 26, 2024 0 Comments credential theft, Ransomware, Ransomware as a Service, storm

Credit to Author: Microsoft Threat Intelligence| Date: Thu, 26 Sep 2024 17:00:00 +0000

Microsoft has observed the threat actor tracked as Storm-0501 launching a multi-staged attack where they compromised hybrid cloud environments and performed lateral movement from on-premises to cloud environment, leading to data exfiltration, credential theft, tampering, persistent backdoor access, and ransomware deployment. The said attack targeted multiple sectors in the United States, including government, manufacturing, transportation, […]

The post Storm-0501: Ransomware attacks expanding to hybrid cloud environments appeared first on Microsoft Security Blog.

Microsoft Security

Ransomware operators exploit ESXi hypervisor vulnerability for mass encryption

August 3, 2024 0 Comments Ransomware, storm

Credit to Author: Microsoft Threat Intelligence| Date: Mon, 29 Jul 2024 16:00:00 +0000

Microsoft Security researchers have observed a vulnerability used by various ransomware operators to get full administrative access to domain-joined ESXi hypervisors and encrypt the virtual machines running on them. The vulnerability involves creating a group called “ESX Admins” in Active Directory and adding an attacker-controlled user account to this group. This manipulation of the Active Directory group takes advantage of a privilege escalation vulnerability (CVE-2024-37085) in ESXi hypervisors that grants the added user full administrative access to the ESXi hypervisor. The vulnerability was fixed by VMware in their June release and ESXi administrators should install this security update.

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Microsoft Security