Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] '0ca2b9bfc538dc50f621ce3b178b1a86' = '"%WINDIR%\csrss.exe" ..'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] '0ca2b9bfc538dc50f621ce3b178b1a86' = '"%WINDIR%\csrss.exe" ..'
Creates or modifies the following files:
- %HOMEPATH%\Start Menu\Programs\Startup\0ca2b9bfc538dc50f621ce3b178b1a86.exe
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%WINDIR%\csrss.exe' = '%WINDIR%\csrss.exe:*:Enabled:csrss.exe'
Executes the following:
- '<SYSTEM32>\netsh.exe' firewall add allowedprogram "%WINDIR%\csrss.exe" "csrss.exe" ENABLE
- '%WINDIR%\csrss.exe'
Modifies file system:
Creates the following files:
- %WINDIR%\csrss.exe
Network activity:
Connects to:
- 'localhost':5552
Miscellaneous:
Searches for the following windows:
- ClassName: 'Indicator' WindowName: ''
