{"id":"5bb68627-3198-40ca-b458-49f973db8752","title":"Rundll32 Execution Without Parameters","description":"Detects rundll32 execution without parameters as observed when running Metasploit windows/smb/psexec exploit module","author":"Bartlomiej Czyz, Relativity","status":"test","level":"high","date":"2021-01-31","modified":"2023-02-28","tags":["attack.lateral-movement","attack.t1021.002","attack.t1570","attack.execution","attack.t1569.002"],"technique_ids":["T1021.002","T1569.002","T1570"],"logsource":{"category":"process_creation","product":"windows"},"falsepositives":["False positives may occur if a user called rundll32 from CLI with no options"],"references":["https://bczyz1.github.io/2021/01/30/psexec.html"],"source_path":"rules/windows/process_creation/proc_creation_win_rundll32_without_parameters.yml","source_sha256":"04e109f6784ecf1cb9245c2d44375603b06fd49da339e0d5e13d88503d422b41","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/process_creation/proc_creation_win_rundll32_without_parameters.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: Rundll32 Execution Without Parameters\nid: 5bb68627-3198-40ca-b458-49f973db8752\nstatus: test\ndescription: Detects rundll32 execution without parameters as observed when running Metasploit windows/smb/psexec exploit module\nreferences:\n    - https://bczyz1.github.io/2021/01/30/psexec.html\nauthor: Bartlomiej Czyz, Relativity\ndate: 2021-01-31\nmodified: 2023-02-28\ntags:\n    - attack.lateral-movement\n    - attack.t1021.002\n    - attack.t1570\n    - attack.execution\n    - attack.t1569.002\nlogsource:\n    category: process_creation\n    product: windows\ndetection:\n    selection:\n        CommandLine:\n            - 'rundll32.exe'\n            - 'rundll32'\n    condition: selection\nfalsepositives:\n    - False positives may occur if a user called rundll32 from CLI with no options\nlevel: high\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1021.002","id":"T1021.002","name":"SMB/Windows Admin Shares","page":"techniques/enterprise/T1021.002/"},{"key":"enterprise/T1569.002","id":"T1569.002","name":"Service Execution","page":"techniques/enterprise/T1569.002/"},{"key":"enterprise/T1570","id":"T1570","name":"Lateral Tool Transfer","page":"techniques/enterprise/T1570/"}],"data_path":"data/detection-rules/5bb68627-3198-40ca-b458-49f973db8752.json","kind":"sigma"}