Query: write Sigma for Detects potentially suspicious execution of the Qemu utility in a Windows environment. Threat actors have leveraged this
Matching passage: Sigma rule: Detects potentially suspicious execution of the Qemu utility in a Windows environment. Threat actors have leveraged this. Logsource: windows / process_creation. Rule: title: Potentially Suspicious Usage Of Qemu id: 5fc297ae-25b6-488a-8f25-cc12ac29b744 status: test description: 'Detects potentially suspicious execution of the Qemu utility in a Windows environment. Threat actors have leveraged this utility and this technique for achieving network access as reported by Kaspersky. ' references: - https://securelist.com/network-tunneling-with-qemu/111803/ - https://www.qemu.org/docs/master/system/invocation.html#hxtool-5 author: Muhammad Faisal (@faisalusuf), Hunter Juhan (@threatHNTR) date: 2024-06-03 tags: - attack.command-and-control - attack.t1090 - attack.t1572 logsource: category: process_creation product: windows detection: selection: CommandLine|contains: - -m 1M - -m 2M - -m 3M CommandLine|contains|all: - restrict=off - '-netdev ' - connect= - -nographic filter_main_normal_usecase: CommandLine|contains: - ' -cdrom ' - ' type=virt ' - ' -blockdev ' condition: selection and not 1 of filter_main_* falsepositives: - Unknown level: medium
Near-miss passage: Sigma rule: Detects suspicious Windows Defender Application Control (WDAC) policy file creation from abnormal processes that could b. Logsource: windows / file_event. Rule: title: Potentially Suspicious WDAC Policy File Creation id: 1d2de8a6-4803-4fde-b85b-f58f3aa7a705 status: experimental description: 'Detects suspicious Windows Defender Application Control (WDAC) policy file creation from abnormal processes that could be abused by attacker to block EDR/AV components while allowing their own malicious code to run on the system. ' references: - https://learn.microsoft.com/en-us/windows/security/application-security/application-control/app-control-for-business/deployment/deploy-appcontrol-policies-using-group-policy - https://beierle.win/2024-12-20-Weaponizing-WDAC-Killing-the-Dreams-of-EDR/ - https://learn.microsoft.com/en-us/windows/security/application-security/application-control/app-control-for-business/deployment/appcontrol-deployment-guide - https://learn.microsoft.com/en-us/windows/security/application-security/application-control/app-control-for-business/deployment/deploy-appcontrol-policies-with-script - https://learn.microsoft.com/en-us/windows/security/application-security/application-control/app-control-for-business/deployment/deploy-appcontrol-policies-with-memcm author: X__Junior date: 2025-02-07 modified: 2026-05-18 tags: - attack.defense-impairment logsource: category: file_event product: windows detection: selection_target: TargetFilename|contains: \Windows\System32\CodeIntegrity\ filter_main_images: Image|endswith: - \Microsoft.ConfigurationManagement.exe - \WDAC Wizard.exe - C:\Program Files\PowerShell\7-preview\pwsh.exe - C:\Program Files\PowerShell\7\pwsh.exe - C:\Windows\System32\dllhost.exe - C:\Windows\System32\WindowsPowerShell\v1.0\powershell_ise.exe - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe - C:\Windows\SysWOW64\dllhost.exe - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell_ise.exe - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe filter_main_cli: - CommandLine|contains|all: - ConvertFrom-CIPolicy -XmlFilePath - '-BinaryFilePath ' - CommandLine|contains: CiTool --update-policy - CommandLine|contains|all: - Copy-Item -Path - -Destination filter_main_system: Image: System filter_main_wuauclt: Image: C:\Windows\System32\wuauclt.exe filter_main_wuaucltcore: Image: - C:\Windows\UUS\arm64\wuaucltcore.exe - C:\Windows\UUS\Packages\Preview\arm64\wuaucltcore.exe condition: selection_target and not 1 of filter_main_* falsepositives: - Administrators and security vendors could leverage WDAC, apply additional filters as needed. level: medium