Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] '157eaa41a7db6532553cf68e0398be06' = '"%TEMP%\Msdos.exe" ..'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] '157eaa41a7db6532553cf68e0398be06' = '"%TEMP%\Msdos.exe" ..'
Creates or modifies the following files:
- %HOMEPATH%\Start Menu\Programs\Startup\157eaa41a7db6532553cf68e0398be06.exe
- %HOMEPATH%\Start Menu\Programs\Startup\update.exe
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%TEMP%\Msdos.exe' = '%TEMP%\Msdos.exe:*:Enabled:Msdos.exe'
Creates and executes the following:
- '%TEMP%\Msdos.exe'
- '%HOMEPATH%\Start Menu\Programs\Startup\update.exe'
Executes the following:
- '<SYSTEM32>\netsh.exe' firewall add allowedprogram "%TEMP%\Msdos.exe" "Msdos.exe" ENABLE
Modifies file system :
Creates the following files:
- %TEMP%\Msdos.exe
Network activity:
Connects to:
- 'hb####ed.no-ip.info':1177
UDP:
- DNS ASK hb####ed.no-ip.info
Miscellaneous:
Searches for the following windows:
- ClassName: 'Indicator' WindowName: '(null)'
