Query: Sigma rule for Detects issues with Windows Defender Real-Time Protection features
Matching passage: Sigma rule: Detects issues with Windows Defender Real-Time Protection features. Logsource: windows / windefend. Rule: title: Windows Defender Real-Time Protection Failure/Restart id: dd80db93-6ec2-4f4c-a017-ad40da6ffe81 status: stable description: Detects issues with Windows Defender Real-Time Protection features references: - Internal Research - https://www.microsoft.com/en-us/security/blog/2023/04/11/guidance-for-investigating-attacks-using-cve-2022-21894-the-blacklotus-campaign/ - https://gist.github.com/nasbench/33732d6705cbdc712fae356f07666346 author: Nasreddine Bencherchali (Nextron Systems), Christopher Peacock '@securepeacock' (Update) date: 2023-03-28 modified: 2023-05-05 tags: - attack.defense-impairment - attack.t1685 logsource: product: windows service: windefend detection: selection: EventID: - 3002 - 3007 filter_optional_network_inspection: Feature_Name: '%%886' Reason: - '%%892' - '%%858' condition: selection and not 1 of filter_optional_* falsepositives: - Some crashes can occur sometimes and the event doesn't provide enough information to tune out these cases. Manual exception is required level: medium
Near-miss passage: Sigma rule: Detects suspicious process access to LSASS.exe from processes located in uncommon locations with dbgcore.dll or dbghelp.. Logsource: windows / process_access. Rule: title: Suspicious Process Access to LSASS with Dbgcore/Dbghelp DLLs id: 9f5c1d59-33be-4e60-bcab-85d2f566effd related: - id: 416bc4a2-7217-4519-8dc7-c3271817f1d5 type: similar status: experimental description: 'Detects suspicious process access to LSASS.exe from processes located in uncommon locations with dbgcore.dll or dbghelp.dll in the call trace. These DLLs contain functions like MiniDumpWriteDump that can be abused for credential dumping purposes. While modern tools like Mimikatz have moved to using ntdll.dll, dbgcore.dll and dbghelp.dll are still used by basic credential dumping utilities and legacy tools for LSASS memory access and process suspension techniques. ' references: - https://www.splunk.com/en_us/blog/security/you-bet-your-lsass-hunting-lsass-access.html - https://docs.microsoft.com/en-us/windows/win32/api/minidumpapiset/nf-minidumpwritedump author: Swachchhanda Shrawan Poudel (Nextron Systems) date: 2025-11-27 tags: - attack.credential-access - attack.defense-impairment - attack.t1003.001 - attack.t1685 logsource: category: process_access product: windows detection: selection_lsass_calltrace: TargetImage|endswith: \lsass.exe CallTrace|contains: - dbgcore.dll - dbghelp.dll selection_susp_location: SourceImage|contains: - :\Perflogs\ - :\Temp\ - :\Users\Public\ - \$Recycle.Bin\ - \AppData\Roaming\ - \Contacts\ - \Desktop\ - \Documents\ - \Downloads\ - \Favorites\ - \Favourites\ - \inetpub\wwwroot\ - \Music\ - \Pictures\ - \Start Menu\Programs\Startup\ - \Users\Default\ - \Videos\ - \Windows\Temp\ condition: all of selection_* falsepositives: - Possibly during software installation or update processes level: high regression_tests_path: regression_data/rules/windows/process_access/proc_access_win_susp_dbgcore_dbghelp_load/info.yml