Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'UserInit' = '<SYSTEM32>\userinit.exe,%HOMEPATH%\My Documents\MSDCSC\msdcsc.exe'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'MicroUpdate' = '%HOMEPATH%\My Documents\MSDCSC\msdcsc.exe'
Malicious functions:
Creates and executes the following:
- '<SYSTEM32>\wscript.exe' "%TEMP%\windows.vbs"
Executes the following:
- '%HOMEPATH%\My Documents\MSDCSC\msdcsc.exe'
- '%TEMP%\YEFDGYT.EXE'
- '%ProgramFiles%\Windows Media Player\wmplayer.exe' /prefetch:6 /Play "%TEMP%\Collection - Track 04.mp3"
Modifies file system:
Creates the following files:
- %TEMP%\YEFDGYT.EXE
- %HOMEPATH%\My Documents\MSDCSC\msdcsc.exe
- %TEMP%\Collection - Track 04.mp3
- %TEMP%\windows.vbs
Network activity:
Connects to:
- 'az##.ddns.net':1177
UDP:
- DNS ASK az##.ddns.net
Miscellaneous:
Searches for the following windows:
- ClassName: '' WindowName: ''
- ClassName: '\MSITPro::EventQueue' WindowName: ''
- ClassName: 'Type32_Main_Window' WindowName: ''
- ClassName: 'WMPlayerApp' WindowName: ''
- ClassName: 'Shell_TrayWnd' WindowName: ''
- ClassName: 'ReBarWindow32' WindowName: ''
- ClassName: 'WMP9DeskBand' WindowName: 'WMP9DeskBand'
