Query: Sigma rule for Detects loading of dbgcore.dll or dbghelp.dll from uncommon locations such as user directories. These DLLs contain the M
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 suspicious user agent strings user by hack tools in proxy logs. Logsource: proxy. Rule: title: Hack Tool User Agent id: c42a3073-30fb-48ae-8c99-c23ada84b103 status: test description: Detects suspicious user agent strings user by hack tools in proxy logs references: - https://github.com/fastly/waf_testbed/blob/8bfc406551f3045e418cbaad7596cff8da331dfc/templates/default/scanners-user-agents.data.erb - http://rules.emergingthreats.net/open/snort-2.9.0/rules/emerging-user_agents.rules author: Florian Roth (Nextron Systems) date: 2017-07-08 modified: 2022-07-07 tags: - attack.initial-access - attack.t1190 - attack.credential-access - attack.t1110 logsource: category: proxy detection: selection: c-useragent|contains: - (hydra) - ' arachni/' - ' BFAC ' - ' brutus ' - ' cgichk ' - core-project/1.0 - ' crimscanner/' - datacha0s - dirbuster - domino hunter - dotdotpwn - FHScan Core - floodgate - get-minimal - gootkit auto-rooter scanner - grendel-scan - ' inspath ' - internet ninja - jaascois - ' zmeu ' - masscan - ' metis ' - morfeus fucking scanner - n-stealth - nsauditor - pmafind - security scan - springenwerk - teh forest lobster - toata dragostea - ' vega/' - voideye - webshag - webvulnscan - ' whcc/' - ' Havij' - absinthe - bsqlbf - mysqloit - pangolin - sql power injector - sqlmap - sqlninja - uil2pn - ruler - Mozilla/5.0 (Windows; U; Windows NT 5.1; pt-PT; rv:1.9.1.2) Gecko/20090729 Firefox/3.5.2 (.NET CLR 3.5.30729) condition: selection falsepositives: - Unknown level: high