{"id":"6aa1d992-5925-4e9f-a49b-845e51d1de01","title":"New DLL Added to AppCertDlls Registry Key","description":"Dynamic-link libraries (DLLs) that are specified in the AppCertDLLs value in the Registry key can be abused to obtain persistence and privilege escalation\nby causing a malicious DLL to be loaded and run in the context of separate processes on the computer.\n","author":"Ilyas Ochkov, oscd.community","status":"test","level":"medium","date":"2019-10-25","modified":"2021-11-27","tags":["attack.privilege-escalation","attack.persistence","attack.t1546.009"],"technique_ids":["T1546.009"],"logsource":{"category":"registry_event","product":"windows"},"falsepositives":["Unknown"],"references":["http://www.hexacorn.com/blog/2013/01/19/beyond-good-ol-run-key-part-3/","https://eqllib.readthedocs.io/en/latest/analytics/14f90406-10a0-4d36-a672-31cabe149f2f.html"],"source_path":"rules/windows/registry/registry_event/registry_event_new_dll_added_to_appcertdlls_registry_key.yml","source_sha256":"e605e26f9afd15dadda4a3b960b06c8dc2b46b6f16b656ff3995513dab7bf02c","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/registry/registry_event/registry_event_new_dll_added_to_appcertdlls_registry_key.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: New DLL Added to AppCertDlls Registry Key\nid: 6aa1d992-5925-4e9f-a49b-845e51d1de01\nstatus: test\ndescription: |\n  Dynamic-link libraries (DLLs) that are specified in the AppCertDLLs value in the Registry key can be abused to obtain persistence and privilege escalation\n  by causing a malicious DLL to be loaded and run in the context of separate processes on the computer.\nreferences:\n    - http://www.hexacorn.com/blog/2013/01/19/beyond-good-ol-run-key-part-3/\n    - https://eqllib.readthedocs.io/en/latest/analytics/14f90406-10a0-4d36-a672-31cabe149f2f.html\nauthor: Ilyas Ochkov, oscd.community\ndate: 2019-10-25\nmodified: 2021-11-27\ntags:\n    - attack.privilege-escalation\n    - attack.persistence\n    - attack.t1546.009\nlogsource:\n    category: registry_event\n    product: windows\ndetection:\n    selection:\n        # Sysmon gives us HKLM\\SYSTEM\\CurrentControlSet\\.. if ControlSetXX is the selected one\n        - TargetObject: 'HKLM\\SYSTEM\\CurrentControlSet\\Control\\Session Manager\\AppCertDlls'\n        # key rename\n        - NewName: 'HKLM\\SYSTEM\\CurentControlSet\\Control\\Session Manager\\AppCertDlls'\n    condition: selection\nfalsepositives:\n    - Unknown\nlevel: medium\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1546.009","id":"T1546.009","name":"AppCert DLLs","page":"techniques/enterprise/T1546.009/"}],"data_path":"data/detection-rules/6aa1d992-5925-4e9f-a49b-845e51d1de01.json","kind":"sigma"}