Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] '8e3bc91142bd8d798a10a1667ae4d2be' = '"%TEMP%\Skype.exe" ..'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] '8e3bc91142bd8d798a10a1667ae4d2be' = '"%TEMP%\Skype.exe" ..'
Creates or modifies the following files:
- %HOMEPATH%\Start Menu\Programs\Startup\8e3bc91142bd8d798a10a1667ae4d2be.exe
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%TEMP%\Skype.exe' = '%TEMP%\Skype.exe:*:Enabled:Skype.exe'
Creates and executes the following:
- '%TEMP%\Skype.exe'
Executes the following:
- '<SYSTEM32>\netsh.exe' firewall add allowedprogram "%TEMP%\Skype.exe" "Skype.exe" ENABLE
Modifies file system :
Creates the following files:
- %TEMP%\Skype.exe
Deletes the following files:
- <SYSTEM32>\PerfStringBackup.TMP
Network activity:
Connects to:
- 'ha#####0005.no-ip.biz':1177
UDP:
- DNS ASK ha#####0005.no-ip.biz
Miscellaneous:
Searches for the following windows:
- ClassName: 'Indicator' WindowName: '(null)'
- ClassName: 'Shell_TrayWnd' WindowName: '(null)'