Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] '1b2dc072f4f77cf3e6bf2673a7c122aa' = '"<Full path to file>" ..'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] '1b2dc072f4f77cf3e6bf2673a7c122aa' = '"<Full path to file>" ..'
Creates or modifies the following files:
- %HOMEPATH%\Start Menu\Programs\Startup\1b2dc072f4f77cf3e6bf2673a7c122aa.exe
Creates the following files on removable media:
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\1b2dc072f4f77cf3e6bf2673a7c122aa.exe
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '<Full path to file>' = '<Full path to file>:*:Enabled:<File name>.exe'
To complicate detection of its presence in the operating system,
forces the system hide from view:
- hidden files
Executes the following:
- '<SYSTEM32>\netsh.exe' firewall add allowedprogram "<Full path to file>" "<File name>.exe" ENABLE
Modifies file system:
Sets the 'hidden' attribute to the following files:
- <Full path to file>
- %HOMEPATH%\Start Menu\Programs\Startup\1b2dc072f4f77cf3e6bf2673a7c122aa.exe
- <Drive name for removable media>:\1b2dc072f4f77cf3e6bf2673a7c122aa.exe
- <Drive name for removable media>:\autorun.inf
Network activity:
Connects to:
- 'nv####n111.ddns.net':55553
UDP:
- DNS ASK nv####n111.ddns.net
