Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Classes\cclaunch\shell\open\command] '' = '"%PROGRAM_FILES%\CCleaner\ccleaner.exe" /%1'
Malicious functions:
Creates and executes the following:
- '%TEMP%\nsr4.tmp\ns5.tmp' ping -n 1 -w 5000 www.pi###orm.com
- '%TEMP%\7ZipSfx.000\ccsetup411.exe' /S
- '%TEMP%\CCleaner_Professional.exe'
Executes the following:
- '<SYSTEM32>\xcopy.exe' ccleaner.ini "%PROGRAM_FILES%\CCleaner\" /s /e /i /y /h /r /k
- '<SYSTEM32>\xcopy.exe' winapp2.ini "%PROGRAM_FILES%\CCleaner\" /s /e /i /y /h /r /k
- '<SYSTEM32>\xcopy.exe' CCleaner.dat "%PROGRAM_FILES%\CCleaner\" /s /e /i /y /h /r /k
- '%WINDIR%\regedit.exe' /s chrome.reg
- '<SYSTEM32>\ping.exe' -n 1 -w 5000 www.pi###orm.com
- '<SYSTEM32>\xcopy.exe' branding.dll "%PROGRAM_FILES%\CCleaner\" /s /e /i /y /h /r /k
Modifies file system :
Creates the following files:
- %PROGRAM_FILES%\CCleaner\Lang\lang-1066.dll
- %PROGRAM_FILES%\CCleaner\Lang\lang-1058.dll
- %PROGRAM_FILES%\CCleaner\Lang\lang-1050.dll
- %PROGRAM_FILES%\CCleaner\Lang\lang-5146.dll
- %PROGRAM_FILES%\CCleaner\Lang\lang-1026.dll
- %PROGRAM_FILES%\CCleaner\Lang\lang-1079.dll
- %PROGRAM_FILES%\CCleaner\Lang\lang-9999.dll
- %PROGRAM_FILES%\CCleaner\Lang\lang-1067.dll
- %PROGRAM_FILES%\CCleaner\Lang\lang-1061.dll
- %PROGRAM_FILES%\CCleaner\Lang\lang-1065.dll
- %PROGRAM_FILES%\CCleaner\Lang\lang-1110.dll
- %PROGRAM_FILES%\CCleaner\Lang\lang-1063.dll
- %PROGRAM_FILES%\CCleaner\Lang\lang-1048.dll
- %PROGRAM_FILES%\CCleaner\Lang\lang-1055.dll
- %PROGRAM_FILES%\CCleaner\Lang\lang-1025.dll
- %PROGRAM_FILES%\CCleaner\Lang\lang-1051.dll
- %PROGRAM_FILES%\CCleaner\Lang\lang-1071.dll
- %PROGRAM_FILES%\CCleaner\Lang\lang-2074.dll
- %PROGRAM_FILES%\CCleaner\Lang\lang-1052.dll
- %PROGRAM_FILES%\CCleaner\Lang\lang-3098.dll
- %ALLUSERSPROFILE%\Start Menu\Programs\CCleaner\CCleaner Homepage.url
- %ALLUSERSPROFILE%\Start Menu\Programs\CCleaner\Uninstall CCleaner.lnk
- %ALLUSERSPROFILE%\Start Menu\Programs\CCleaner\CCleaner.lnk
- %PROGRAM_FILES%\CCleaner\Lang\lang-1081.dll
- %ALLUSERSPROFILE%\Desktop\CCleaner.lnk
- %PROGRAM_FILES%\CCleaner\winapp2.ini
- %PROGRAM_FILES%\CCleaner\CCleaner.dat
- %PROGRAM_FILES%\CCleaner\ccleaner.ini
- %PROGRAM_FILES%\CCleaner\uninst.exe
- %PROGRAM_FILES%\CCleaner\branding.dll
- %PROGRAM_FILES%\CCleaner\Lang\lang-1087.dll
- %PROGRAM_FILES%\CCleaner\Lang\lang-1062.dll
- %PROGRAM_FILES%\CCleaner\Lang\lang-1059.dll
- %PROGRAM_FILES%\CCleaner\Lang\lang-1068.dll
- %PROGRAM_FILES%\CCleaner\Lang\lang-1060.dll
- %PROGRAM_FILES%\CCleaner\Lang\lang-1109.dll
- %PROGRAM_FILES%\CCleaner\Lang\lang-1054.dll
- %PROGRAM_FILES%\CCleaner\Lang\lang-1092.dll
- %PROGRAM_FILES%\CCleaner\Lang\lang-1102.dll
- %PROGRAM_FILES%\CCleaner\Lang\lang-1057.dll
- %TEMP%\nsr4.tmp\nsExec.dll
- %TEMP%\nsr4.tmp\ns5.tmp
- %TEMP%\nsr4.tmp\g\gcapi_dll.dll
- %TEMP%\nsr4.tmp\UserInfo.dll
- %TEMP%\nsr4.tmp\g\gtapi_signed.dll
- %PROGRAM_FILES%\CCleaner\Lang\lang-1031.dll
- %PROGRAM_FILES%\CCleaner\Lang\lang-1041.dll
- %PROGRAM_FILES%\CCleaner\CCleaner.exe
- %TEMP%\nsr4.tmp\inetc.dll
- %PROGRAM_FILES%\CCleaner\CheckUpdate.log
- %TEMP%\7ZipSfx.000\ccleaner.ini
- %TEMP%\7ZipSfx.000\winapp2.ini
- %TEMP%\7ZipSfx.000\chrome.reg
- %TEMP%\aut1.tmp
- %TEMP%\CCleaner_Professional.exe
- %TEMP%\nsl3.tmp
- %TEMP%\nsr4.tmp\System.dll
- %TEMP%\7ZipSfx.000\branding.dll
- %TEMP%\7ZipSfx.000\CCleaner.dat
- %TEMP%\7ZipSfx.000\ccsetup411.exe
- %PROGRAM_FILES%\CCleaner\Lang\lang-1046.dll
- %PROGRAM_FILES%\CCleaner\Lang\lang-1038.dll
- %PROGRAM_FILES%\CCleaner\Lang\lang-1035.dll
- %PROGRAM_FILES%\CCleaner\Lang\lang-1028.dll
- %PROGRAM_FILES%\CCleaner\Lang\lang-1030.dll
- %PROGRAM_FILES%\CCleaner\Lang\lang-1037.dll
- %PROGRAM_FILES%\CCleaner\Lang\lang-1032.dll
- %PROGRAM_FILES%\CCleaner\Lang\lang-1027.dll
- %PROGRAM_FILES%\CCleaner\Lang\lang-1029.dll
- %PROGRAM_FILES%\CCleaner\Lang\lang-2052.dll
- %PROGRAM_FILES%\CCleaner\Lang\lang-1044.dll
- %PROGRAM_FILES%\CCleaner\Lang\lang-1040.dll
- %PROGRAM_FILES%\CCleaner\Lang\lang-1042.dll
- %PROGRAM_FILES%\CCleaner\Lang\lang-1049.dll
- %PROGRAM_FILES%\CCleaner\Lang\lang-1053.dll
- %PROGRAM_FILES%\CCleaner\Lang\lang-1034.dll
- %PROGRAM_FILES%\CCleaner\Lang\lang-1045.dll
- %PROGRAM_FILES%\CCleaner\Lang\lang-1036.dll
- %PROGRAM_FILES%\CCleaner\Lang\lang-2070.dll
- %PROGRAM_FILES%\CCleaner\Lang\lang-1043.dll
Deletes the following files:
- %TEMP%\7ZipSfx.000\CCleaner.dat
- %TEMP%\7ZipSfx.000\ccleaner.ini
- %TEMP%\nsr4.tmp\UserInfo.dll
- %TEMP%\7ZipSfx.000\branding.dll
- %TEMP%\7ZipSfx.000\winapp2.ini
- %TEMP%\CCleaner_Professional.exe
- %TEMP%\7ZipSfx.000\ccsetup411.exe
- %TEMP%\7ZipSfx.000\chrome.reg
- %PROGRAM_FILES%\CCleaner\CheckUpdate.log
- %TEMP%\nsr4.tmp\g\gcapi_dll.dll
- %TEMP%\aut1.tmp
- %TEMP%\nsr4.tmp\ns5.tmp
- %TEMP%\nsr4.tmp\nsExec.dll
- %TEMP%\nsr4.tmp\System.dll
- %TEMP%\nsr4.tmp\g\gtapi_signed.dll
- %TEMP%\nsr4.tmp\inetc.dll
Network activity:
Connects to:
- 'se#####.piriform.com':80
TCP:
HTTP GET requests:
- se#####.piriform.com/installcheck.aspx?p=################################################
UDP:
- DNS ASK se#####.piriform.com
- DNS ASK www.pi###orm.com
Miscellaneous:
Searches for the following windows:
- ClassName: 'ThunderRT6FormDC' WindowName: 'CCleaner'
- ClassName: 'PiriformCCleaner' WindowName: ''
- ClassName: '#32770' WindowName: ''
- ClassName: '#32770' WindowName: 'Piriform CCleaner'
- ClassName: 'Shell_TrayWnd' WindowName: ''
- ClassName: 'RegEdit_RegEdit' WindowName: ''
- ClassName: 'PiriformRegistration' WindowName: ''
