title: Suspicious WebDav Client Execution
author: Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research)
date: 2020/05/02
description: A General detection for svchost.exe spawning rundll32.exe with command
    arguments like C:\windows\system32\davclnt.dll,DavSetCookie. This could be an
    indicator of exfiltration or use of WebDav to launch code (hosted on WebDav Server).
detection:
    SELECTION_1:
        EventID: 1
    SELECTION_2:
        Image: '*\rundll32.exe'
    SELECTION_3:
        CommandLine: '*C:\windows\system32\davclnt.dll,DavSetCookie*'
    condition: (SELECTION_1 and SELECTION_2 and SELECTION_3)
falsepositives:
- unknown
id: 2dbd9d3d-9e27-42a8-b8df-f13825c6c3d5
level: medium
logsource:
    category: process_creation
    product: windows
references:
- https://github.com/OTRF/detection-hackathon-apt29/issues/17
- https://threathunterplaybook.com/evals/apt29/detections/7.B.4_C10730EA-6345-4934-AA0F-B0EFCA0C4BA6.html
status: experimental
tags:
- attack.exfiltration
- attack.t1048.003
yml_filename: sysmon_susp_webdav_client_execution.yml
yml_path: /Users/user/Documents/YamatoSecurity/sigma/rules/windows/process_creation