{"id":"84232095-ecca-4015-b0d7-7726507ee793","title":"Suspicious DLL Loaded via CertOC.EXE","description":"Detects when a user installs certificates by using CertOC.exe to load the target DLL file.","author":"Nasreddine Bencherchali (Nextron Systems)","status":"test","level":"high","date":"2023-02-15","modified":"2024-03-05","tags":["attack.stealth","attack.t1218"],"technique_ids":["T1218"],"logsource":{"category":"process_creation","product":"windows"},"falsepositives":["Unknown"],"references":["https://twitter.com/sblmsrsn/status/1445758411803480072?s=20","https://github.com/elastic/protections-artifacts/commit/746086721fd385d9f5c6647cada1788db4aea95f#diff-fe98e74189873d6df72a15df2eaa0315c59ba9cdaca93ecd68afc4ea09194ef2","https://lolbas-project.github.io/lolbas/Binaries/Certoc/"],"source_path":"rules/windows/process_creation/proc_creation_win_certoc_load_dll_susp_locations.yml","source_sha256":"6f1220dbeb50bda747ba80b924520cf5085fe8022b341344c27014065c44daa2","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/process_creation/proc_creation_win_certoc_load_dll_susp_locations.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: Suspicious DLL Loaded via CertOC.EXE\nid: 84232095-ecca-4015-b0d7-7726507ee793\nrelated:\n    - id: 242301bc-f92f-4476-8718-78004a6efd9f\n      type: similar\nstatus: test\ndescription: Detects when a user installs certificates by using CertOC.exe to load the target DLL file.\nreferences:\n    - https://twitter.com/sblmsrsn/status/1445758411803480072?s=20\n    - https://github.com/elastic/protections-artifacts/commit/746086721fd385d9f5c6647cada1788db4aea95f#diff-fe98e74189873d6df72a15df2eaa0315c59ba9cdaca93ecd68afc4ea09194ef2\n    - https://lolbas-project.github.io/lolbas/Binaries/Certoc/\nauthor: Nasreddine Bencherchali (Nextron Systems)\ndate: 2023-02-15\nmodified: 2024-03-05\ntags:\n    - attack.stealth\n    - attack.t1218\nlogsource:\n    category: process_creation\n    product: windows\ndetection:\n    selection_img:\n        - Image|endswith: '\\certoc.exe'\n        - OriginalFileName: 'CertOC.exe'\n    selection_cli:\n        CommandLine|contains|windash: ' -LoadDLL '\n    selection_paths:\n        CommandLine|contains:\n            - '\\Appdata\\Local\\Temp\\'\n            - '\\Desktop\\'\n            - '\\Downloads\\'\n            - '\\Users\\Public\\'\n            - 'C:\\Windows\\Tasks\\'\n            - 'C:\\Windows\\Temp\\'\n    condition: all of selection_*\nfalsepositives:\n    - Unknown\nlevel: high\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1218","id":"T1218","name":"System Binary Proxy Execution","page":"techniques/enterprise/T1218/"}],"data_path":"data/detection-rules/84232095-ecca-4015-b0d7-7726507ee793.json","kind":"sigma"}