Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'UserInit' = '<SYSTEM32>\userinit.exe,%APPDATA%\MSDCSC\system.exe'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Microsoft' = '%APPDATA%\MSDCSC\system.exe'
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'EnableFirewall' = '00000000'
Creates and executes the following:
- '%APPDATA%\MSDCSC\system.exe'
- '%TEMP%\temp.exe'
Executes the following:
- '<SYSTEM32>\attrib.exe' "%HOMEPATH%\Local Settings\Temp" +s +h
- '<SYSTEM32>\attrib.exe' "%TEMP%\temp.exe" +s +h
- '<SYSTEM32>\notepad.exe'
Injects code into
the following system processes:
- <SYSTEM32>\notepad.exe
Modifies file system :
Creates the following files:
- %APPDATA%\MSDCSC\system.exe
- %TEMP%\temp.exe
Sets the 'hidden' attribute to the following files:
- %APPDATA%\MSDCSC\system.exe
Deletes the following files:
- %TEMP%\temp.exe
Network activity:
Connects to:
- 'sa####9.sytes.net':1604
UDP:
- DNS ASK sa####9.sytes.net
Miscellaneous:
Searches for the following windows:
- ClassName: '#32770' WindowName: '(null)'
- ClassName: 'SysListView32' WindowName: '(null)'
- ClassName: 'Indicator' WindowName: '(null)'
- ClassName: '#32770' WindowName: '<Auxiliary name>'
