Windows Explorer Spawning Command Shell with Start and Exit Commands

 1title: Windows Explorer Spawning Command Shell with Start and Exit Commands
 2id: ebb4eaad-9909-4785-a038-97bdee8aa5ae
 3status: experimental
 4description: |
 5    This detection analytic looks for instances of explorer.exe spawning cmd.exe along 
 6    with corresponding start and exit commands that we commonly observe in conjunction 
 7    with a wide variety of malicious activity. Part of the RedCanary 2024 Threat 
 8    Detection Report.    
 9references:
10    - https://redcanary.com/threat-detection-report/techniques/windows-command-shell/
11author: RedCanary, Sigma formatting by Micah Babinski
12date: 2024/03/21
13tags:
14    - attack.execution
15    - attack.t1059
16    - attack.t1059.003
17    - attack.t1053
18logsource:
19    category: process_creation
20    product: windows
21detection:
22    selection:
23        ParentImage|endswith: '\explorer.exe'
24        Image|endswith: '\cmd.exe'
25        CommandLine|contains|all:
26            - 'start'
27            - 'exit'
28    condition: selection
29falsepositives:
30    - Unknown
31level: low```