LoFP / psexec is a dual-use tool that can be used for benign or malicious activity. it's important to baseline your environment to determine the amount of noise to expect from this tool.

sequence by process.entity_id
  [process where host.os.type == "windows" and process.name : "PsExec.exe" and event.type == "start" and

   /* This flag suppresses the display of the license dialog and may
      indicate that psexec executed for the first time in the machine */
   process.args : "-accepteula" and

   not process.executable : ("?:\\ProgramData\\Docusnap\\Discovery\\discovery\\plugins\\17\\Bin\\psexec.exe",
                             "?:\\Docusnap 11\\Bin\\psexec.exe",
                             "?:\\Program Files\\Docusnap X\\Bin\\psexec.exe",
                             "?:\\Program Files\\Docusnap X\\Tools\\dsDNS.exe") and
   not process.parent.executable : "?:\\Program Files (x86)\\Cynet\\Cynet Scanner\\CynetScanner.exe"]
  [network where host.os.type == "windows" and process.name : "PsExec.exe"]