Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'c51dd1d4c0a92fb8c2ee78d1aed16abd' = '"%TEMP%\msn.exe" ..'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'c51dd1d4c0a92fb8c2ee78d1aed16abd' = '"%TEMP%\msn.exe" ..'
Creates or modifies the following files:
- %HOMEPATH%\Start Menu\Programs\Startup\c51dd1d4c0a92fb8c2ee78d1aed16abd.exe
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%TEMP%\msn.exe' = '%TEMP%\msn.exe:*:Enabled:msn.exe'
Creates and executes the following:
- '%TEMP%\msn.exe'
- '%TEMP%\BPU8XKkPslf15GdgmE5t.exe'
Executes the following:
- '<SYSTEM32>\netsh.exe' firewall add allowedprogram "%TEMP%\msn.exe" "msn.exe" ENABLE
Modifies file system :
Creates the following files:
- %WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\enterprisesec.config.cch.new
- %TEMP%\msn.exe
- %TEMP%\BPU8XKkPslf15GdgmE5t.exe
- %WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\security.config.cch.new
Moves the following files:
- from %WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\enterprisesec.config.cch.new to %WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\enterprisesec.config.cch
- from %WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\security.config.cch.new to %WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\security.config.cch
Network activity:
Connects to:
- '11#.#11.111.1':81
UDP:
- DNS ASK s####.zapto.org
Miscellaneous:
Searches for the following windows:
- ClassName: 'Indicator' WindowName: '(null)'