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articles/defender-for-cloud/release-notes.md

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title: Release notes
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description: This page is updated frequently with the latest updates in Defender for Cloud.
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ms.topic: overview
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ms.date: 08/03/2023
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ms.date: 08/07/2023
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---
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# What's new in Microsoft Defender for Cloud?
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|Date |Update |
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|----------|----------|
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| August 3 | [New security alerts in Defender for Servers Plan 2: Detecting potential attacks abusing Azure virtual machine extensions](#new-security-alerts-in-defender-for-servers-plan-2-detecting-potential-attacks-abusing-azure-virtual-machine-extensions)
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| August 7 | [New security alerts in Defender for Servers Plan 2: Detecting potential attacks abusing Azure virtual machine extensions](#new-security-alerts-in-defender-for-servers-plan-2-detecting-potential-attacks-abusing-azure-virtual-machine-extensions)
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### New security alerts in Defender for Servers Plan 2: Detecting potential attacks abusing Azure virtual machine extensions
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August 3, 2023
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August 7, 2023
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This new series of alerts focuses on detecting suspicious activities of Azure virtual machine extensions and provides insights into attackers' attempts to compromise and perform malicious activities on your virtual machines.
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|Alert (alert type)|Description|MITRE tactics|Severity|
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|----|----|----|----|
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| **Suspicious failure installing GPU extension in your subscription (Preview)**<br>(VM_GPUExtensionSuspiciousFailure) | Suspicious intent of installing a GPU extension on unsupported VMs. This extension should be installed on virtual machines equipped with a graphic processor, and in this case the virtual machines are not equipped with such.These failures can be seen when malicious adversaries execute multiple installations of such extension for crypto-mining purposes. | Impact | Medium |
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| **Suspicious installation of a GPU extension was detected on your virtual machine (Preview)**<br>(VM_GPUDriverExtensionUnusualExecution) | Suspicious installation of a GPU extension was detected on your virtual machine by analyzing the Azure Resource Manager operations in your subscription. Attackers may use the GPU driver extension to install GPU drivers on your virtual machine via the Azure Resource Manager to perform cryptojacking. This activity is deemed suspicious as the principal's behavior departs from its usual patterns. *This alert was [released in July, 2023](#new-security-alert-in-defender-for-servers-plan-2-detecting-potential-attacks-leveraging-azure-vm-gpu-driver-extensions).* | Impact | Low |
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| **Suspicious installation of a GPU extension was detected on your virtual machine (Preview)**<br>(VM_GPUDriverExtensionUnusualExecution)<br>*This alert was [released in July, 2023](#new-security-alert-in-defender-for-servers-plan-2-detecting-potential-attacks-leveraging-azure-vm-gpu-driver-extensions).* | Suspicious installation of a GPU extension was detected on your virtual machine by analyzing the Azure Resource Manager operations in your subscription. Attackers may use the GPU driver extension to install GPU drivers on your virtual machine via the Azure Resource Manager to perform cryptojacking. This activity is deemed suspicious as the principal's behavior departs from its usual patterns. | Impact | Low |
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| **Run Command with a suspicious script was detected on your virtual machine (Preview)**<br>(VM_RunCommandSuspiciousScript) | A Run Command with a suspicious script was detected on your virtual machine by analyzing the Azure Resource Manager operations in your subscription. Attackers may use Run Command to execute malicious code with high privileges on your virtual machine via the Azure Resource Manager. The script is deemed suspicious as certain parts were identified as being potentially malicious. | Execution | High |
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| **Suspicious unauthorized Run Command usage was detected on your virtual machine (Preview)**<br>(VM_RunCommandSuspiciousFailure) | Suspicious unauthorized usage of Run Command has failed and was detected on your virtual machine by analyzing the Azure Resource Manager operations in your subscription. Attackers may attempt to use Run Command to execute malicious code with high privileges on your virtual machines via the Azure Resource Manager. This activity is deemed suspicious as it hasn't been commonly seen before. | Execution | Medium |
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| **Suspicious Run Command usage was detected on your virtual machine (Preview)**<br>(VM_RunCommandSuspiciousUsage) | Suspicious usage of Run Command was detected on your virtual machine by analyzing the Azure Resource Manager operations in your subscription. Attackers may use Run Command to execute malicious code with high privileges on your virtual machines via the Azure Resource Manager. This activity is deemed suspicious as it hasn't been commonly seen before. | Execution | Low |
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| **Suspicious usage of VMAccess extension was detected on your virtual machines (Preview)**<br>(VM_VMAccessSuspiciousUsage) | Suspicious usage of VMAccess extension was detected on your virtual machines. Attackers may abuse the VMAccess extension to gain access and compromise your virtual machines with high privileges by resetting access or managing administrative users. This activity is deemed suspicious as the principal's behavior departs from its usual patterns, and due to the high number of the extension installations. | Persistence | Medium |
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| **Desired State Configuration (DSC) extension with a suspicious script was detected on your virtual machine (Preview)**<br>(VM_DSCExtensionSuspiciousScript) | Desired State Configuration (DSC) extension with a suspicious script was detected on your virtual machine by analyzing the Azure Resource Manager operations in your subscription. Attackers may use the Desired State Configuration (DSC) extension to deploy malicious configurations, such as persistence mechanisms, malicious scripts, and more, with high privileges, on your virtual machines. The script is deemed suspicious as certain parts were identified as being potentially malicious. | Execution | High |
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| **Suspicious usage of a Desired State Configuration (DSC) extension was detected on your virtual machines (Preview)**<br>(VM_DSCExtensionSuspiciousUsage) | Suspicious usage of a Desired State Configuration (DSC) extension was detected on your virtual machines by analyzing the Azure Resource Manager operations in your subscription. Attackers may use the Desired State Configuration (DSC) extension to deploy malicious configurations, such as persistence mechanisms, malicious scripts, and more, with high privileges, on your virtual machines. This activity is deemed suspicious as the principal's behavior departs from its usual patterns, and due to the high number of the extension installations. | Impact | Low |
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| **Custom script extension with a suspicious script was detected on your virtual machine (Preview)**<br>(VM_CustomScriptExtensionSuspiciousCmd) | Custom script extension with a suspicious script was detected on your virtual machine by analyzing the Azure Resource Manager operations in your subscription. Attackers may use Custom script extension to execute malicious code with high privileges on your virtual machine via the Azure Resource Manager. The script is deemed suspicious as certain parts were identified as being potentially malicious. *(This alert already exists and has been improved with more enhanced logic and detection methods.)* | Execution | High |
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| **Custom script extension with a suspicious script was detected on your virtual machine (Preview)**<br>(VM_CustomScriptExtensionSuspiciousCmd)<br>*(This alert already exists and has been improved with more enhanced logic and detection methods.)* | Custom script extension with a suspicious script was detected on your virtual machine by analyzing the Azure Resource Manager operations in your subscription. Attackers may use Custom script extension to execute malicious code with high privileges on your virtual machine via the Azure Resource Manager. The script is deemed suspicious as certain parts were identified as being potentially malicious. | Execution | High |
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See the [extension-based alerts in Defender for Servers](alerts-reference.md#alerts-for-azure-vm-extensions).
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