{"id":"2dbd9d3d-9e27-42a8-b8df-f13825c6c3d5","title":"WebDav Client Execution Via Rundll32.EXE","description":"Detects \"svchost.exe\" spawning \"rundll32.exe\" with command arguments like \"C:\\windows\\system32\\davclnt.dll,DavSetCookie\".\nThis could be an indicator of exfiltration or use of WebDav to launch code (hosted on a WebDav server).\n","author":"Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research)","status":"test","level":"medium","date":"2020-05-02","modified":"2023-09-18","tags":["attack.exfiltration","attack.t1048.003"],"technique_ids":["T1048.003"],"logsource":{"category":"process_creation","product":"windows"},"falsepositives":["Unknown"],"references":["https://github.com/OTRF/detection-hackathon-apt29/issues/17","https://github.com/OTRF/ThreatHunter-Playbook/blob/2d4257f630f4c9770f78d0c1df059f891ffc3fec/docs/evals/apt29/detections/7.B.4_C10730EA-6345-4934-AA0F-B0EFCA0C4BA6.md"],"source_path":"rules/windows/process_creation/proc_creation_win_rundll32_webdav_client_execution.yml","source_sha256":"8cea6ebbf93a2de605476f9974cc994027b73a0de74fe40906f98f6872edf41a","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/process_creation/proc_creation_win_rundll32_webdav_client_execution.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: WebDav Client Execution Via Rundll32.EXE\nid: 2dbd9d3d-9e27-42a8-b8df-f13825c6c3d5\nstatus: test\ndescription: |\n    Detects \"svchost.exe\" spawning \"rundll32.exe\" with command arguments like \"C:\\windows\\system32\\davclnt.dll,DavSetCookie\".\n    This could be an indicator of exfiltration or use of WebDav to launch code (hosted on a WebDav server).\nreferences:\n    - https://github.com/OTRF/detection-hackathon-apt29/issues/17\n    - https://github.com/OTRF/ThreatHunter-Playbook/blob/2d4257f630f4c9770f78d0c1df059f891ffc3fec/docs/evals/apt29/detections/7.B.4_C10730EA-6345-4934-AA0F-B0EFCA0C4BA6.md\nauthor: Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research)\ndate: 2020-05-02\nmodified: 2023-09-18\ntags:\n    - attack.exfiltration\n    - attack.t1048.003\nlogsource:\n    category: process_creation\n    product: windows\ndetection:\n    selection_parent:\n        ParentImage|endswith: '\\svchost.exe'\n    selection_img:\n        - Image|endswith: '\\rundll32.exe'\n        - OriginalFileName: 'RUNDLL32.EXE'\n    selection_cli:\n        CommandLine|contains: 'C:\\windows\\system32\\davclnt.dll,DavSetCookie'\n    condition: all of selection_*\nfalsepositives:\n    - Unknown\nlevel: medium\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1048.003","id":"T1048.003","name":"Exfiltration Over Unencrypted Non-C2 Protocol","page":"techniques/enterprise/T1048.003/"}],"data_path":"data/detection-rules/2dbd9d3d-9e27-42a8-b8df-f13825c6c3d5.json","kind":"sigma"}