Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] '61d6ba9e6c9dbab2229486885a59cfea' = '"%APPDATA%\CCleaner.exe" ..'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] '61d6ba9e6c9dbab2229486885a59cfea' = '"%APPDATA%\CCleaner.exe" ..'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] '18.exe' = '%APPDATA%Microsoft\System\Services\18.exe'
Creates or modifies the following files:
- %HOMEPATH%\Start Menu\Programs\Startup\61d6ba9e6c9dbab2229486885a59cfea.exe
Creates the following files on removable media:
- <Drive name for removable media>:\61d6ba9e6c9dbab2229486885a59cfea.exe
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%APPDATA%\CCleaner.exe' = '%APPDATA%\CCleaner.exe:*:Enabled:CCleaner.exe'
Creates and executes the following:
- '%APPDATA%\CCleaner.exe'
Executes the following:
- '<SYSTEM32>\netsh.exe' firewall add allowedprogram "%APPDATA%\CCleaner.exe" "CCleaner.exe" ENABLE
Searches for windows to
detect analytical utilities:
- ClassName: 'FilemonClass' WindowName: '(null)'
- ClassName: 'PROCMON_WINDOW_CLASS' WindowName: '(null)'
- ClassName: 'RegmonClass' WindowName: '(null)'
- ClassName: 'OLLYDBG' WindowName: '(null)'
- ClassName: 'GBDYLLO' WindowName: '(null)'
- ClassName: 'pediy06' WindowName: '(null)'
Modifies file system :
Creates the following files:
- %APPDATA%Microsoft\System\Services\18.exe
- %APPDATA%\CCleaner.exe
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\61d6ba9e6c9dbab2229486885a59cfea.exe
Network activity:
Connects to:
- 'yh###.no-ip.org':25
UDP:
- DNS ASK yh###.no-ip.org
Miscellaneous:
Searches for the following windows:
- ClassName: '18467-41' WindowName: '(null)'
- ClassName: 'Indicator' WindowName: '(null)'
- ClassName: '(null)' WindowName: 'Registry Monitor - Sysinternals: www.sysinternals.com'
- ClassName: '(null)' WindowName: 'File Monitor - Sysinternals: www.sysinternals.com'
- ClassName: '(null)' WindowName: 'Process Monitor - Sysinternals: www.sysinternals.com'
