Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] '8424898cc4c927994d288319a361b825' = '"%APPDATA%\skype.exe" ..'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] '8424898cc4c927994d288319a361b825' = '"%APPDATA%\skype.exe" ..'
Creates or modifies the following files:
- %HOMEPATH%\Start Menu\Programs\Startup\8424898cc4c927994d288319a361b825.exe
Creates the following files on removable media:
- <Drive name for removable media>:\8424898cc4c927994d288319a361b825.exe
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%APPDATA%\skype.exe' = '%APPDATA%\skype.exe:*:Enabled:skype.exe'
Creates and executes the following:
- '%APPDATA%\skype.exe'
Executes the following:
- '<SYSTEM32>\netsh.exe' firewall add allowedprogram "%APPDATA%\skype.exe" "skype.exe" ENABLE
Modifies file system :
Creates the following files:
- %APPDATA%\skype.exe
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\8424898cc4c927994d288319a361b825.exe
Network activity:
Connects to:
- 'kh####ou.no-ip.org':81
UDP:
- DNS ASK kh####ou.no-ip.org
Miscellaneous:
Searches for the following windows:
- ClassName: 'Indicator' WindowName: '(null)'
