Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] '807647db07454cd43e3d5195951fcb89' = '"%APPDATA%\skype.exe" ..'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] '807647db07454cd43e3d5195951fcb89' = '"%APPDATA%\skype.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
Network activity:
Connects to:
- 'sk####all.sytes.net':59211
UDP:
- DNS ASK sk####all.sytes.net
Miscellaneous:
Searches for the following windows:
- ClassName: 'Indicator' WindowName: '(null)'