Windows Scheduled Task Making Suspicious Network Connection

 1title: Windows Scheduled Task Making Suspicious Network Connection
 2id: 4a224230-746d-436b-b569-59f2d6809d6b
 3status: experimental
 4description: Detects scheduled tasks created to reach out to external domains and
 5    download arbitrary binaries on a set or recurring schedule. Inspired by the 2022
 6    Red Canary Threat Detection report.
 7references:
 8    - https://redcanary.com/threat-detection-report/techniques/scheduled-task/
 9author: Micah Babinski
10date: 2022/11/04
11tags:
12    - attack.persistence
13    - attack.execution
14    - attack.t1053
15    - attack.t1053.005
16logsource:
17    category: process_creation
18    product: windows
19detection:
20    selection:
21        Image|endswith: '\schtasks.exe'
22        CommandLine|contains|windash: '/create'
23        CommandLine|contains:
24            - 'https://'
25            - 'http://'
26            - 'ftp://'
27    condition: selection
28falsepositives:
29    - Creation of legitimate scheduled tasks which need to access external sites.
30level: medium```