{"id":"bb76d96b-821c-47cf-944b-7ce377864492","title":"Suspicious NTLM Authentication on the Printer Spooler Service","description":"Detects a privilege elevation attempt by coercing NTLM authentication on the Printer Spooler service","author":"Elastic (idea), Tobias Michalski (Nextron Systems)","status":"test","level":"high","date":"2022-05-04","modified":"2023-02-09","tags":["attack.privilege-escalation","attack.credential-access","attack.t1212"],"technique_ids":["T1212"],"logsource":{"category":"process_creation","product":"windows"},"falsepositives":["Unknown"],"references":["https://twitter.com/med0x2e/status/1520402518685200384","https://github.com/elastic/detection-rules/blob/dd224fb3f81d0b4bf8593c5f02a029d647ba2b2d/rules/windows/credential_access_relay_ntlm_auth_via_http_spoolss.toml"],"source_path":"rules/windows/process_creation/proc_creation_win_rundll32_ntlmrelay.yml","source_sha256":"208c3363b657a25be6ff5ae6645478ea1da3f05f82fec5ac3dfb22382ed3e966","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/process_creation/proc_creation_win_rundll32_ntlmrelay.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 NTLM Authentication on the Printer Spooler Service\nid: bb76d96b-821c-47cf-944b-7ce377864492\nstatus: test\ndescription: Detects a privilege elevation attempt by coercing NTLM authentication on the Printer Spooler service\nreferences:\n    - https://twitter.com/med0x2e/status/1520402518685200384\n    - https://github.com/elastic/detection-rules/blob/dd224fb3f81d0b4bf8593c5f02a029d647ba2b2d/rules/windows/credential_access_relay_ntlm_auth_via_http_spoolss.toml\nauthor: Elastic (idea), Tobias Michalski (Nextron Systems)\ndate: 2022-05-04\nmodified: 2023-02-09\ntags:\n    - attack.privilege-escalation\n    - attack.credential-access\n    - attack.t1212\nlogsource:\n    category: process_creation\n    product: windows\ndetection:\n    selection_img:\n        - Image|endswith: '\\rundll32.exe'\n        - OriginalFileName: 'RUNDLL32.EXE'\n    selection_cli:\n        CommandLine|contains|all:\n            - 'C:\\windows\\system32\\davclnt.dll,DavSetCookie'\n            - 'http'\n        CommandLine|contains:\n            - 'spoolss'\n            - 'srvsvc'\n            - '/print/pipe/'\n    condition: all of selection_*\nfalsepositives:\n    - Unknown\nlevel: high\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1212","id":"T1212","name":"Exploitation for Credential Access","page":"techniques/enterprise/T1212/"}],"data_path":"data/detection-rules/bb76d96b-821c-47cf-944b-7ce377864492.json","kind":"sigma"}