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:
- '%HOMEPATH%\My Documents\MSDCSC\msdcsc.exe'
- '%TEMP%\RarSFX1\Test.exe'
- '%TEMP%\RarSFX0\Test.sfx.exe' -p123 -d%HOMEPATH%\Local Settings\Temp
Executes the following:
- '<SYSTEM32>\cmd.exe' /c ""%TEMP%\RarSFX0\FUD.bat" "
Modifies file system :
Creates the following files:
- %TEMP%\RarSFX1\Test.exe
- %HOMEPATH%\My Documents\MSDCSC\msdcsc.exe
- %TEMP%\RarSFX0\FUD.bat
- %TEMP%\RarSFX0\Test.sfx.exe
Sets the 'hidden' attribute to the following files:
- %HOMEPATH%\My Documents\MSDCSC\msdcsc.exe
Deletes the following files:
- %TEMP%\RarSFX0\Test.sfx.exe
- %TEMP%\RarSFX0\FUD.bat
- %TEMP%\RarSFX1\Test.exe
Network activity:
Connects to:
- 'fr####t.ddns.net':6479
UDP:
- DNS ASK Fr####t.ddns.net
Miscellaneous:
Searches for the following windows:
- ClassName: 'Indicator' WindowName: '(null)'
- ClassName: 'Shell_TrayWnd' WindowName: '(null)'
- ClassName: 'EDIT' WindowName: '(null)'
