Remote Access Tool - ScreenConnect Remote Command Execution

 1title: Remote Access Tool - ScreenConnect Remote Command Execution
 2id: b1f73849-6329-4069-bc8f-78a604bb8b23
 3status: experimental
 4description: Detects the execution of a system command via the ScreenConnect RMM service.
 5references:
 6    - https://github.com/SigmaHQ/sigma/pull/4467
 7author: Ali Alwashali
 8date: 2023/10/10
 9modified: 2024/02/26
10tags:
11    - attack.execution
12    - attack.t1059.003
13logsource:
14    category: process_creation
15    product: windows
16detection:
17    selection_parent:
18        ParentImage|endswith: '\ScreenConnect.ClientService.exe'
19    selection_img:
20        - Image|endswith: '\cmd.exe'
21        - OriginalFileName: 'Cmd.Exe'
22    selection_cli:
23        # Example:
24        #   CommandLine: "cmd.exe" /c "C:\Windows\TEMP\ScreenConnect\23.6.8.8644\3c41d689-bbf5-4216-b2f4-ba8fd6192c25run.cmd"
25        CommandLine|contains: '\TEMP\ScreenConnect\'
26    condition: all of selection_*
27falsepositives:
28    - Legitimate use of ScreenConnect. Disable this rule if ScreenConnect is heavily used.
29# Note: Increase the level if you don't leverage ScreenConnect
30level: low