Query: detect Detects UAC bypass method using Windows event viewer in logs
Matching passage: Sigma rule: Detects UAC bypass method using Windows event viewer. Logsource: windows / registry_set. Rule: title: UAC Bypass via Event Viewer id: 7c81fec3-1c1d-43b0-996a-46753041b1b6 status: test description: Detects UAC bypass method using Windows event viewer references: - https://enigma0x3.net/2016/08/15/fileless-uac-bypass-using-eventvwr-exe-and-registry-hijacking/ - https://www.hybrid-analysis.com/sample/e122bc8bf291f15cab182a5d2d27b8db1e7019e4e96bb5cdbd1dfe7446f3f51f?environmentId=100 author: Florian Roth (Nextron Systems) date: 2017-03-19 modified: 2023-09-28 tags: - attack.privilege-escalation - attack.t1548.002 - car.2019-04-001 logsource: product: windows category: registry_set detection: selection: TargetObject|endswith: \mscfile\shell\open\command condition: selection falsepositives: - Unknown level: high
Near-miss passage: Sigma rule: Detects the usage of "reg.exe" to tamper with different Windows Defender registry keys in order to disable some importan. Logsource: windows / process_creation. Rule: title: Suspicious Windows Defender Registry Key Tampering Via Reg.EXE id: 452bce90-6fb0-43cc-97a5-affc283139b3 status: test description: 'Detects the usage of "reg.exe" to tamper with different Windows Defender registry keys in order to disable some important features related to protection and detection ' references: - https://thedfirreport.com/2022/03/21/apt35-automates-initial-access-using-proxyshell/ - https://github.com/swagkarna/Defeat-Defender-V1.2.0/tree/ae4059c4276da6f6303b8f53cdff085ecae88a91 - https://www.elevenforum.com/t/video-guide-how-to-completely-disable-microsoft-defender-antivirus.14608/page-2 - https://tria.ge/241231-j9yatstqbm/behavioral1 author: Florian Roth (Nextron Systems), Swachchhanda Shrawan Poudel, Nasreddine Bencherchali (Nextron Systems) date: 2022-03-22 modified: 2025-06-04 tags: - attack.defense-impairment - attack.t1685 logsource: category: process_creation product: windows detection: selection_root_img: - Image|endswith: \reg.exe - OriginalFileName: reg.exe selection_root_path: CommandLine|contains: - SOFTWARE\Microsoft\Windows Defender\ - SOFTWARE\Policies\Microsoft\Windows Defender Security Center - SOFTWARE\Policies\Microsoft\Windows Defender\ selection_dword_0: CommandLine|contains|all: - ' add ' - d 0 CommandLine|contains: - DisallowExploitProtectionOverride - EnableControlledFolderAccess - MpEnablePus - PUAProtection - SpynetReporting - SubmitSamplesConsent - TamperProtection selection_dword_1: CommandLine|contains|all: - ' add ' - d 1 CommandLine|contains: - DisableAccess - DisableAntiSpyware - DisableAntiSpywareRealtimeProtection - DisableAntiVirus - DisableAntiVirusSignatures - DisableArchiveScanning - DisableBehaviorMonitoring - DisableBlockAtFirstSeen - DisableCloudProtection - DisableConfig - DisableEnhancedNotifications - DisableIntrusionPreventionSystem - DisableIOAVProtection - DisableNetworkProtection - DisableOnAccessProtection - DisablePrivacyMode - DisableRealtimeMonitoring - DisableRoutinelyTakingAction - DisableScanOnRealtimeEnable - DisableScriptScanning - DisableSecurityCenter - Notification_Suppress - SignatureDisableUpdateOnStartupWithoutEngine condition: all of selection_root_* and 1 of selection_dword_* falsepositives: - Rare legitimate use by administrators to test software (should always be investigated) level: high