Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'WindowsServiceUpdate' = '%APPDATA%\crssn.exe'
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%APPDATA%\crssn.exe' = '%APPDATA%\crssn.exe:*:Enabled:WindowsServiceUpdate'
Creates and executes the following:
- %APPDATA%\crssn.exe
Modifies file system :
Creates the following files:
- %APPDATA%\crssn.exe
Sets the 'hidden' attribute to the following files:
- %APPDATA%\crssn.exe
Network activity:
Connects to:
- 'te##.#anjsheri.com':81
UDP:
- DNS ASK te##.#anjsheri.com
