Query: detect Detects when the Windows Vulnerable Driver Blocklist is set to disabled. This setting is crucial for preventing the load in logs
Matching passage: Sigma rule: Detects when the Windows Vulnerable Driver Blocklist is set to disabled. This setting is crucial for preventing the load. Logsource: windows / registry_set. Rule: title: Windows Vulnerable Driver Blocklist Disabled id: d526c60a-e236-4011-b165-831ffa52ab70 related: - id: 22154f0e-5132-4a54-aa78-cc62f6def531 type: similar status: experimental description: 'Detects when the Windows Vulnerable Driver Blocklist is set to disabled. This setting is crucial for preventing the loading of known vulnerable drivers, and its modification may indicate an attempt to bypass security controls. It is often targeted by threat actors to facilitate the installation of malicious or vulnerable drivers, particularly in scenarios involving Endpoint Detection and Response (EDR) bypass techniques. This rule applies to systems that support the Vulnerable Driver Blocklist feature, including Windows 10 version 1903 and later, and Windows Server 2022 and later. Note that this change will require a reboot to take effect, and this rule only detects the registry modification action. ' references: - https://docs.microsoft.com/en-us/windows/security/threat-protection/windows-defender-application-control/microsoft-recommended-driver-block-rules - https://www.sophos.com/en-us/blog/sharpening-the-knife-gold-blades-strategic-evolution - https://learn.microsoft.com/en-us/windows/security/application-security/application-control/app-control-for-business/design/microsoft-recommended-driver-block-rules author: Swachchhanda Shrawan Poudel (Nextron Systems) date: 2026-01-26 tags: - attack.defense-impairment - attack.t1685 logsource: category: registry_set product: windows detection: selection: TargetObject|endswith: \Control\CI\Config\VulnerableDriverBlocklistEnable Details: DWORD (0x00000000) condition: selection falsepositives: - Unlikely and should be investigated immediately. level: high regression_tests_path: regression_data/rules/windows/registry/registry_set/registry_set_vulnerable_driver_blocklist_disable/info.yml
Near-miss passage: Sigma rule: Detects the execution of powershell scripts with calls to the "Start-NetEventSession" cmdlet. Which allows an attacker t. Logsource: windows / ps_script. Rule: title: Potential Packet Capture Activity Via Start-NetEventSession - ScriptBlock id: da34e323-1e65-42db-83be-a6725ac2caa3 status: test description: 'Detects the execution of powershell scripts with calls to the "Start-NetEventSession" cmdlet. Which allows an attacker to start event and packet capture for a network event session. Adversaries may attempt to capture network to gather information over the course of an operation. Data captured via this technique may include user credentials, especially those sent over an insecure, unencrypted protocol. ' references: - https://github.com/redcanaryco/atomic-red-team/blob/5f866ca4517e837c4ea576e7309d0891e78080a8/atomics/T1040/T1040.md#atomic-test-16---powershell-network-sniffing - https://github.com/0xsyr0/Awesome-Cybersecurity-Handbooks/blob/7b8935fe4c82cb64d61343de1a8b2e38dd968534/handbooks/10_post_exploitation.md - https://github.com/forgottentq/powershell/blob/9e616363d497143dc955c4fdce68e5c18d28a6cb/captureWindows-Endpoint.ps1#L13 author: frack113 date: 2024-05-12 tags: - attack.credential-access - attack.discovery - attack.t1040 logsource: product: windows category: ps_script definition: 'Requirements: Script Block Logging must be enabled' detection: selection: ScriptBlockText|contains: Start-NetEventSession condition: selection falsepositives: - Legitimate network diagnostic scripts. level: medium