Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'a3a90b31b8e530d14d4e491300aa9406' = '"%WINDIR%\firewall.exe" ..'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'a3a90b31b8e530d14d4e491300aa9406' = '"%WINDIR%\firewall.exe" ..'
Creates or modifies the following files:
- %HOMEPATH%\Start Menu\Programs\Startup\a3a90b31b8e530d14d4e491300aa9406.exe
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%WINDIR%\firewall.exe' = '%WINDIR%\firewall.exe:*:Enabled:firewall.exe'
Creates and executes the following:
- '%WINDIR%\firewall.exe'
Executes the following:
- '<SYSTEM32>\netsh.exe' firewall add allowedprogram "%WINDIR%\firewall.exe" "firewall.exe" ENABLE
Modifies file system :
Creates the following files:
- %WINDIR%\firewall.exe
Network activity:
Connects to:
- 'an####.zapto.org':1177
UDP:
- DNS ASK an####.zapto.org
Miscellaneous:
Searches for the following windows:
- ClassName: 'Indicator' WindowName: '(null)'
