Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] '9dddb50c659570dee55157579995188e' = '"%WINDIR%\scrn.exe" ..'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] '9dddb50c659570dee55157579995188e' = '"%WINDIR%\scrn.exe" ..'
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%WINDIR%\scrn.exe' = '%WINDIR%\scrn.exe:*:Enabled:scrn.exe'
Creates and executes the following:
- '%WINDIR%\scrn.exe'
Executes the following:
- '<SYSTEM32>\netsh.exe' firewall add allowedprogram "%WINDIR%\scrn.exe" "scrn.exe" ENABLE
Modifies file system :
Creates the following files:
- %WINDIR%\scrn.exe
Network activity:
Connects to:
- 'av####07.zapto.org':1177
UDP:
- DNS ASK av####07.zapto.org
Miscellaneous:
Searches for the following windows:
- ClassName: 'Indicator' WindowName: '(null)'
