Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Microsoft(R) RTSVC Driver' = '%HOMEPATH%\Microsoft-Driver-1-53-2495-3625-9745\winsvn.exe'
Creates the following files on removable media:
- <Drive name for removable media>:\winrcdsv32.exe
- <Drive name for removable media>:\autorun.inf
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%HOMEPATH%\Microsoft-Driver-1-53-2495-3625-9745\winsvn.exe' = '%HOMEPATH%\Microsoft-Driver-1-53-2495-3625-9745\winsvn.exe:*:Enabled:Microsoft(R) RTSVC Driver'
Creates and executes the following:
- %HOMEPATH%\Microsoft-Driver-1-53-2495-3625-9745\winsvn.exe
Modifies file system :
Creates the following files:
- %HOMEPATH%\Microsoft-Driver-1-53-2495-3625-9745\winsvn.exe
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\winrcdsv32.exe
- %HOMEPATH%\Microsoft-Driver-1-53-2495-3625-9745\winsvn.exe
Network activity:
Connects to:
- 'sr##500.com':5500
- 'ho###500.net':5500
UDP:
- DNS ASK sr##500.com
- DNS ASK ho###500.net
- '<Private IP address>':1036
Miscellaneous:
Searches for the following windows:
- ClassName: 'Indicator' WindowName: ''