Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] '3765711d91ea420af40f730efb6f54c7' = '"%APPDATA%\winlog.exe" ..'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] '3765711d91ea420af40f730efb6f54c7' = '"%APPDATA%\winlog.exe" ..'
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%APPDATA%\winlog.exe' = '%APPDATA%\winlog.exe:*:Enabled:winlog.exe'
Creates and executes the following:
- '%APPDATA%\winlog.exe'
Executes the following:
- '<SYSTEM32>\netsh.exe' firewall add allowedprogram "%APPDATA%\winlog.exe" "winlog.exe" ENABLE
Modifies file system :
Creates the following files:
- %APPDATA%\winlog.exe
Network activity:
Connects to:
- 'de###.hopto.org':7714
UDP:
- DNS ASK de###.hopto.org
Miscellaneous:
Searches for the following windows:
- ClassName: 'Indicator' WindowName: '(null)'
