Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'ebbb7f716e2d639979693e536bf7364d' = '"%TEMP%\fdrrvstty.exe" ..'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'ebbb7f716e2d639979693e536bf7364d' = '"%TEMP%\fdrrvstty.exe" ..'
Creates or modifies the following files:
- %HOMEPATH%\Start Menu\Programs\Startup\ebbb7f716e2d639979693e536bf7364d.exe
Creates the following files on removable media:
- <Drive name for removable media>:\ebbb7f716e2d639979693e536bf7364d.exe
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%TEMP%\fdrrvstty.exe' = '%TEMP%\fdrrvstty.exe:*:Enabled:fdrrvstty.exe'
Creates and executes the following:
- '%TEMP%\fdrrvstty.exe'
Executes the following:
- '<SYSTEM32>\netsh.exe' firewall add allowedprogram "%TEMP%\fdrrvstty.exe" "fdrrvstty.exe" ENABLE
Modifies file system :
Creates the following files:
- %WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\enterprisesec.config.cch.new
- %WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\security.config.cch.new
- %TEMP%\fdrrvstty.exe
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\ebbb7f716e2d639979693e536bf7364d.exe
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:
- 'ah#####1hecr.no-ip.biz':1177
UDP:
- DNS ASK ah#####1hecr.no-ip.biz
Miscellaneous:
Searches for the following windows:
- ClassName: 'Indicator' WindowName: '(null)'
