blue-team-tools/rules/windows/process_creation/sysmon_susp_webdav_client_execution.yml

title: Suspicious WebDav Client Execution
id: 2dbd9d3d-9e27-42a8-b8df-f13825c6c3d5
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).
status: experimental
date: 2020/05/02
author: Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research)
tags:
    - attack.exfiltration
    - attack.t1048.003
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
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        Image|endswith: '\rundll32.exe'
        CommandLine|contains: 'C:\windows\system32\davclnt.dll,DavSetCookie'
    condition: selection
falsepositives:
    - unknown
level: medium