{"id":"5cdb711b-5740-4fb2-ba88-f7945027afac","title":"Rundll32 UNC Path Execution","description":"Detects rundll32 execution where the DLL is located on a remote location (share)","author":"Nasreddine Bencherchali (Nextron Systems)","status":"test","level":"high","date":"2022-08-10","modified":"","tags":["attack.execution","attack.lateral-movement","attack.stealth","attack.t1021.002","attack.t1218.011"],"technique_ids":["T1021.002","T1218.011"],"logsource":{"category":"process_creation","product":"windows"},"falsepositives":["Unlikely"],"references":["https://www.cybereason.com/blog/rundll32-the-infamous-proxy-for-executing-malicious-code"],"source_path":"rules/windows/process_creation/proc_creation_win_rundll32_unc_path.yml","source_sha256":"59e4f482a4849cab66c7e116083a12e5c0c4dc08bdb3652f6bfee058d21b1400","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/process_creation/proc_creation_win_rundll32_unc_path.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 UNC Path Execution\nid: 5cdb711b-5740-4fb2-ba88-f7945027afac\nstatus: test\ndescription: Detects rundll32 execution where the DLL is located on a remote location (share)\nreferences:\n    - https://www.cybereason.com/blog/rundll32-the-infamous-proxy-for-executing-malicious-code\nauthor: Nasreddine Bencherchali (Nextron Systems)\ndate: 2022-08-10\ntags:\n    - attack.execution\n    - attack.lateral-movement\n    - attack.stealth\n    - attack.t1021.002\n    - attack.t1218.011\nlogsource:\n    category: process_creation\n    product: windows\ndetection:\n    selection_img:\n        - Image|endswith: '\\rundll32.exe'\n        - OriginalFileName: 'RUNDLL32.EXE'\n        - CommandLine|contains: 'rundll32'\n    selection_cli:\n        CommandLine|contains: ' \\\\\\\\'\n    condition: all of selection_*\nfalsepositives:\n    - Unlikely\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/T1218.011","id":"T1218.011","name":"Rundll32","page":"techniques/enterprise/T1218.011/"}],"data_path":"data/detection-rules/5cdb711b-5740-4fb2-ba88-f7945027afac.json","kind":"sigma"}