Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'shell' = 'Explorer.exe "%TEMP%\system.exe"'
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '"%TEMP%\system.exe"' = '"%TEMP%\system.exe:*:Enabled:system.exe"'
Modifies file system :
Creates the following files:
- %TEMP%\system.exe
Network activity:
Connects to:
- 'ya###stat.com':80
TCP:
HTTP GET requests:
- ya###stat.com/dbs/logo.php
UDP:
- DNS ASK ya###stat.com
