Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] '9b40f05fede166a7debfe893ea2e2350' = '"%TEMP%\crss..exe" ..'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] '9b40f05fede166a7debfe893ea2e2350' = '"%TEMP%\crss..exe" ..'
Creates or modifies the following files:
- %HOMEPATH%\Start Menu\Programs\Startup\9b40f05fede166a7debfe893ea2e2350.exe
Creates the following files on removable media:
- <Drive name for removable media>:\9b40f05fede166a7debfe893ea2e2350.exe
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%TEMP%\crss..exe' = '%TEMP%\crss..exe:*:Enabled:crss..exe'
Creates and executes the following:
- '%TEMP%\crss..exe'
Executes the following:
- '<SYSTEM32>\netsh.exe' firewall add allowedprogram "%TEMP%\crss..exe" "crss..exe" ENABLE
Modifies file system :
Creates the following files:
- %TEMP%\crss..exe
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\9b40f05fede166a7debfe893ea2e2350.exe
Network activity:
Connects to:
- 'sa####.hopto.org':1177
UDP:
- DNS ASK sa####.hopto.org
Miscellaneous:
Searches for the following windows:
- ClassName: 'Indicator' WindowName: '(null)'
