Query: detect Detects the tampering of Hypervisor-protected Code Integrity (HVCI) related registry values via command line tool reg.ex in logs
Matching passage: Sigma rule: Detects the tampering of Hypervisor-protected Code Integrity (HVCI) related registry values via command line tool reg.ex. Logsource: windows / process_creation. Rule: title: Hypervisor-protected Code Integrity (HVCI) Related Registry Tampering Via CommandLine id: 6225c53a-a96e-4235-b28f-8d7997cd96eb related: - id: 8b7273a4-ba5d-4d8a-b04f-11f2900d043a type: similar status: experimental description: 'Detects the tampering of Hypervisor-protected Code Integrity (HVCI) related registry values via command line tool reg.exe. HVCI uses virtualization-based security to protect code integrity by ensuring that only trusted code can run in kernel mode. Adversaries may tamper with HVCI to load malicious or unsigned drivers, which can be used to escalate privileges, maintain persistence, or evade security mechanisms. ' references: - https://www.sophos.com/en-us/blog/sharpening-the-knife-gold-blades-strategic-evolution - https://learn.microsoft.com/en-us/windows/security/hardware-security/enable-virtualization-based-protection-of-code-integrity author: Swachchhanda Shrawan Poudel (Nextron Systems) date: 2026-01-26 tags: - attack.defense-impairment - attack.t1685 logsource: category: process_creation product: windows detection: selection_img: - Image|endswith: - \powershell.exe - \pwsh.exe - \reg.exe - OriginalFileName: - PowerShell.EXE - pwsh.dll - reg.exe selection_cli: CommandLine|contains: - 'add ' - 'New-ItemProperty ' - 'Set-ItemProperty ' - 'si ' selection_cli_base: CommandLine|contains: \DeviceGuard selection_cli_key: CommandLine|contains: - EnableVirtualizationBasedSecurity - HypervisorEnforcedCodeIntegrity condition: all of selection_* falsepositives: - Legitimate system administration tasks that require disabling HVCI for troubleshooting purposes when certain drivers or applications are incompatible with it. level: high regression_tests_path: regression_data/rules/windows/process_creation/proc_creation_win_hvci_registry_tampering/info.yml simulation: - type: atomic-red-team name: Disable Hypervisor-Enforced Code Integrity (HVCI) technique: T1562.001 atomic_guid: 70bd71e6-eba4-4e00-92f7-617911dbe020
Near-miss passage: Sigma rule: Detects when a Microsoft Cloud App Security reported when a user signs into your sanctioned apps from a risky IP address. Logsource: m365 / threat_management. Rule: title: Logon from a Risky IP Address id: c191e2fa-f9d6-4ccf-82af-4f2aba08359f status: test description: Detects when a Microsoft Cloud App Security reported when a user signs into your sanctioned apps from a risky IP address. references: - https://learn.microsoft.com/en-us/defender-cloud-apps/anomaly-detection-policy - https://learn.microsoft.com/en-us/defender-cloud-apps/policy-template-reference author: Austin Songer @austinsonger date: 2021-08-23 modified: 2022-10-09 tags: - attack.privilege-escalation - attack.persistence - attack.initial-access - attack.stealth - attack.t1078 logsource: service: threat_management product: m365 detection: selection: eventSource: SecurityComplianceCenter eventName: Log on from a risky IP address status: success condition: selection falsepositives: - Unknown level: medium