Technical Information
To ensure autorun and distribution
Modifies the following registry keys
- [HKCU\Software\Microsoft\Windows\CurrentVersion\Run] 'WindowsSystemMonitor' = '"%APPDATA%\Microsoft\CLR_v4.0\UserSession.exe"'
Modifies file system
Creates the following files
- %APPDATA%\microsoft\clr_v4.0\usersession.exe
Sets the 'hidden' attribute to the following files
- %APPDATA%\microsoft\clr_v4.0\usersession.exe
Deletes itself.
Network activity
Connects to
- 'ap#.##legram.org':443
UDP
- DNS ASK ap#.##legram.org
Miscellaneous
Creates and executes the following
- '%APPDATA%\microsoft\clr_v4.0\usersession.exe' --monitor
Executes the following
- '%APPDATA%\microsoft\clr_v4.0\usersession.exe' --monitor' (with hidden window)
