Detectionmediumtest
Remote Access Tool - ScreenConnect Potential Suspicious Remote Command Execution
Detects potentially suspicious child processes launched via the ScreenConnect client service.
Convert In Phoenix Studio
Open this Sigma rule in the converter with the YAML preloaded and ready for backend selection.
Launch
Florian Roth (Nextron Systems), Nasreddine Bencherchali (Nextron Systems)Created Fri Feb 25Updated Wed Feb 287b582f1a-b318-4c6a-bf4e-66fe49bf55a5windows
Log Source
WindowsProcess Creation
ProductWindows← raw: windows
CategoryProcess Creation← raw: process_creation
Events generated when a new process is spawned on the system. Covers command-line arguments, parent/child relationships, and process metadata.
Detection Logic
Detection Logic1 selector
detection:
selection:
ParentCommandLine|contains|all:
- ':\Windows\TEMP\ScreenConnect\'
- 'run.cmd'
Image|endswith:
- '\bitsadmin.exe'
- '\cmd.exe'
- '\curl.exe'
- '\dllhost.exe'
- '\net.exe'
- '\nltest.exe'
- '\powershell.exe'
- '\pwsh.exe'
- '\rundll32.exe'
- '\wevtutil.exe'
condition: selectionFalse Positives
If the script being executed make use of any of the utilities mentioned in the detection then they should filtered out or allowed.
MITRE ATT&CK
Tactics
Other
attack.t1219.002
Rule Metadata
Rule ID
7b582f1a-b318-4c6a-bf4e-66fe49bf55a5
Status
test
Level
medium
Type
Detection
Created
Fri Feb 25
Modified
Wed Feb 28
Path
rules/windows/process_creation/proc_creation_win_remote_access_tools_screenconnect_remote_execution_susp.yml
Raw Tags
attack.command-and-controlattack.t1219.002