Troj/Agent-EW is a Trojan for the Windows platform.
When first run Troj/Agent-EW copies itself to <System>\explorer.exe and creates the non-viral text file <System>\systemlr.dll.
The following registry entry is created to run Troj/Agent-EW on startup:
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
explorer.exe
<System>\explorer.exe