{"id":"9ca2bf31-0570-44d8-a543-534c47c33ed7","title":"Potential DLL Sideloading Of DBGCORE.DLL","description":"Detects DLL sideloading of \"dbgcore.dll\"","author":"Nasreddine Bencherchali (Nextron Systems), Wietze Beukema (project and research)","status":"test","level":"medium","date":"2022-10-25","modified":"2025-10-06","tags":["attack.persistence","attack.privilege-escalation","attack.execution","attack.stealth","attack.t1574.001"],"technique_ids":["T1574.001"],"logsource":{"category":"image_load","product":"windows"},"falsepositives":["Legitimate applications loading their own versions of the DLL mentioned in this rule"],"references":["https://hijacklibs.net/"],"source_path":"rules/windows/image_load/image_load_side_load_dbgcore.yml","source_sha256":"08485dbe345660c4febc6e450772651efc188ea516acb222c94bef2c824aea87","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/image_load/image_load_side_load_dbgcore.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: Potential DLL Sideloading Of DBGCORE.DLL\nid: 9ca2bf31-0570-44d8-a543-534c47c33ed7\nstatus: test\ndescription: Detects DLL sideloading of \"dbgcore.dll\"\nreferences:\n    - https://hijacklibs.net/ # For list of DLLs that could be sideloaded (search for dlls mentioned here in there)\nauthor: Nasreddine Bencherchali (Nextron Systems), Wietze Beukema (project and research)\ndate: 2022-10-25\nmodified: 2025-10-06\ntags:\n    - attack.persistence\n    - attack.privilege-escalation\n    - attack.execution\n    - attack.stealth\n    - attack.t1574.001\nlogsource:\n    category: image_load\n    product: windows\ndetection:\n    selection:\n        ImageLoaded|endswith: '\\dbgcore.dll'\n    filter_main_generic:\n        ImageLoaded|startswith:\n            - 'C:\\Program Files (x86)\\'\n            - 'C:\\Program Files\\'\n            - 'C:\\Windows\\SoftwareDistribution\\'\n            - 'C:\\Windows\\System32\\'\n            - 'C:\\Windows\\SystemTemp\\'\n            - 'C:\\Windows\\SysWOW64\\'\n            - 'C:\\Windows\\WinSxS\\'\n    filter_optional_steam:\n        ImageLoaded|endswith: '\\Steam\\bin\\cef\\cef.win7x64\\dbgcore.dll'\n    filter_optional_opera:\n        # C:\\\\Users\\\\User\\\\AppData\\\\Local\\\\Temp\\\\.opera\\\\Opera Installer Temp\\\\opera_package_202311051506321\\\\assistant\\\\dbgcore.dll\n        ImageLoaded|contains: 'opera\\Opera Installer Temp\\opera_package'\n        ImageLoaded|endswith: '\\assistant\\dbgcore.dll'\n    condition: selection and not 1 of filter_main_* and not 1 of filter_optional_*\nfalsepositives:\n    - Legitimate applications loading their own versions of the DLL mentioned in this rule\nlevel: medium\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1574.001","id":"T1574.001","name":"DLL","page":"techniques/enterprise/T1574.001/"}],"data_path":"data/detection-rules/9ca2bf31-0570-44d8-a543-534c47c33ed7.json","kind":"sigma"}