Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'b565816c52853ef27c38a2884cd278f6' = '"%TEMP%\skype.exe" ..'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'b565816c52853ef27c38a2884cd278f6' = '"%TEMP%\skype.exe" ..'
Creates or modifies the following files:
- %HOMEPATH%\Start Menu\Programs\Startup\b565816c52853ef27c38a2884cd278f6.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'
- '%HOMEPATH%\Local Settings\Tempskype.exe'
Executes the following:
- '<SYSTEM32>\netsh.exe' firewall add allowedprogram "%TEMP%\skype.exe" "skype.exe" ENABLE
- '<SYSTEM32>\rundll32.exe' <SYSTEM32>\shimgvw.dll,ImageView_Fullscreen %APPDATA%\moi.jpg
Modifies file system :
Creates the following files:
- %HOMEPATH%\Recent\Application Data.lnk
- %TEMP%\skype.exe
- %HOMEPATH%\Recent\moi.lnk
- %APPDATA%\moi.jpg
- %HOMEPATH%\Local Settings\Tempskype.exe
Network activity:
Connects to:
- 'ro####.zapto.org':5552
UDP:
- DNS ASK ro####.zapto.org
Miscellaneous:
Searches for the following windows:
- ClassName: 'Indicator' WindowName: '(null)'
- ClassName: 'Shell_TrayWnd' WindowName: '(null)'
- ClassName: 'ShImgVw:CPreviewWnd' WindowName: '(null)'
