Query: detect Detects execution of arbitrary DLLs or unsigned code via a ".csproj" files via Dotnet.EXE. in logs
Matching passage: Sigma rule: Detects execution of arbitrary DLLs or unsigned code via a ".csproj" files via Dotnet.EXE.. Logsource: windows / process_creation. Rule: title: Arbitrary DLL or Csproj Code Execution Via Dotnet.EXE id: d80d5c81-04ba-45b4-84e4-92eba40e0ad3 status: test description: Detects execution of arbitrary DLLs or unsigned code via a ".csproj" files via Dotnet.EXE. references: - https://lolbas-project.github.io/lolbas/OtherMSBinaries/Dotnet/ - https://twitter.com/_felamos/status/1204705548668555264 - https://bohops.com/2019/08/19/dotnet-core-a-vector-for-awl-bypass-defense-evasion/ author: Beyu Denis, oscd.community date: 2020-10-18 modified: 2025-10-08 tags: - attack.stealth - attack.t1218 logsource: category: process_creation product: windows detection: selection_img: - Image|endswith: \dotnet.exe - OriginalFileName: .NET Host selection_cli: CommandLine|endswith: - .csproj - .csproj" - .dll - .dll" - .csproj' - .dll' filter_optional_notepadplus_plus: ParentImage: - C:\Program Files (x86)\Notepad++\notepad++.exe - C:\Program Files\Notepad++\notepad++.exe CommandLine|contains|all: - C:\ProgramData\CSScriptNpp\ - '-cscs_path:' - \cs-script\cscs.dll condition: all of selection_* and not 1 of filter_optional_* falsepositives: - Legitimate administrator usage level: medium
Near-miss 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