Query: Sigma YAML for windows / image_load
Matching passage: Sigma rule: Detects loading of dbgcore.dll or dbghelp.dll from uncommon locations such as user directories. These DLLs contain the M. Logsource: windows / image_load. Rule: title: Suspicious Loading of Dbgcore/Dbghelp DLLs from Uncommon Location id: 416bc4a2-7217-4519-8dc7-c3271817f1d5 related: - id: 9f5c1d59-33be-4e60-bcab-85d2f566effd type: similar status: experimental description: 'Detects loading of dbgcore.dll or dbghelp.dll from uncommon locations such as user directories. These DLLs contain the MiniDumpWriteDump function, which can be abused for credential dumping purposes or in some cases for evading EDR/AV detection by suspending processes. ' references: - https://blog.axelarator.net/hunting-for-edr-freeze/ - https://www.zerosalarium.com/2025/09/EDR-Freeze-Puts-EDRs-Antivirus-Into-Coma.html - https://www.splunk.com/en_us/blog/security/you-bet-your-lsass-hunting-lsass-access.html author: Swachchhanda Shrawan Poudel (Nextron Systems) date: 2025-11-27 modified: 2026-01-09 tags: - attack.credential-access - attack.defense-impairment - attack.t1003 - attack.t1685 logsource: category: image_load product: windows detection: selection_img: Image|contains: - :\Perflogs\ - :\Temp\ - :\Users\Public\ - \$Recycle.Bin\ - \Contacts\ - \Documents\ - \Favorites\ - \Favourites\ - \inetpub\wwwroot\ - \Music\ - \Pictures\ - \Start Menu\Programs\Startup\ - \Users\Default\ - \Videos\ selection_dll: ImageLoaded|endswith: - \dbgcore.dll - \dbghelp.dll condition: all of selection_* falsepositives: - Unknown level: high regression_tests_path: regression_data/rules/windows/image_load/image_load_win_susp_dbgcore_dbghelp_load/info.yml
Near-miss passage: Sigma rule: Detects when an attacker modifies values of the Disk Cleanup Handler in the registry to achieve persistence via autorun.. Logsource: windows / registry_set. Rule: title: Persistence Via Disk Cleanup Handler - Autorun id: d4e2745c-f0c6-4bde-a3ab-b553b3f693cc status: test description: 'Detects when an attacker modifies values of the Disk Cleanup Handler in the registry to achieve persistence via autorun. The disk cleanup manager is part of the operating system. It displays the dialog box […] The user has the option of enabling or disabling individual handlers by selecting or clearing their check box in the disk cleanup manager''s UI. Although Windows comes with a number of disk cleanup handlers, they aren''t designed to handle files produced by other applications. Instead, the disk cleanup manager is designed to be flexible and extensible by enabling any developer to implement and register their own disk cleanup handler. Any developer can extend the available disk cleanup services by implementing and registering a disk cleanup handler. ' references: - https://persistence-info.github.io/Data/diskcleanuphandler.html - https://www.hexacorn.com/blog/2018/09/02/beyond-good-ol-run-key-part-86/ author: Nasreddine Bencherchali (Nextron Systems) date: 2022-07-21 modified: 2023-08-17 tags: - attack.persistence logsource: category: registry_set product: windows detection: root: TargetObject|contains: \SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\VolumeCaches\ selection_autorun: TargetObject|contains: \Autorun Details: DWORD (0x00000001) selection_pre_after: TargetObject|contains: - \CleanupString - \PreCleanupString Details|contains: - cmd - powershell - rundll32 - mshta - cscript - wscript - wsl - \Users\Public\ - \Windows\TEMP\ - \Microsoft\Windows\Start Menu\Programs\Startup\ condition: root and 1 of selection_* falsepositives: - Unknown level: medium