Sigma rule: Remote Access Tool - ScreenConnect Remote Command Execution

Rule

Title

Remote Access Tool - ScreenConnect Remote Command Execution

Status

test

Level

low

Author

Ali Alwashali

Date

2023-10-10

Modified

2024-02-26

File

rules/windows/process_creation/proc_creation_win_remote_access_tools_screenconnect_remote_execution.yml

Commit

ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects the execution of a system command via the ScreenConnect RMM service.

Log source

product

windows

category

process_creation

Detection

selection_parent:
    ParentImage|endswith: '\ScreenConnect.ClientService.exe'
selection_img:
    - Image|endswith: '\cmd.exe'
    - OriginalFileName: 'Cmd.Exe'
selection_cli:
    # Example:
    #   CommandLine: "cmd.exe" /c "C:\Windows\TEMP\ScreenConnect\23.6.8.8644\3c41d689-bbf5-4216-b2f4-ba8fd6192c25run.cmd"
    CommandLine|contains: '\TEMP\ScreenConnect\'
condition: all of selection_*

False positives (as the rule lists them)

• Legitimate use of ScreenConnect. Disable this rule if ScreenConnect is heavily used.

Tags

• attack.execution
• attack.t1059.003

MITRE ATT&CK ids this rule names

• T1059.003

References

• https://github.com/SigmaHQ/sigma/pull/4467

Read on 2026-11-03T00:58:21.399Z under licence sigma-drl-1.1@d5f4c36a from https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/process_creation/proc_creation_win_remote_access_tools_screenconnect_remote_execution.yml