Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] '73e584e423276daf85659dd420032b73' = '"%HOMEPATH%\winlogon.exe" ..'
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] '73e584e423276daf85659dd420032b73' = '"%HOMEPATH%\winlogon.exe" ..'
Creates or modifies the following files:
- %HOMEPATH%\Start Menu\Programs\Startup\73e584e423276daf85659dd420032b73.exe
Creates the following files on removable media:
- <Drive name for removable media>:\73e584e423276daf85659dd420032b73.exe
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%HOMEPATH%\winlogon.exe' = '%HOMEPATH%\winlogon.exe:*:Enabled:winlogon...
Executes the following:
- '<SYSTEM32>\netsh.exe' firewall add allowedprogram \"C:\\Documents and Settings\\%USERNAME%\\winlogon.exe\" \"winlogon.exe\" ENABLE
Modifies file system:
Creates the following files:
- %HOMEPATH%\winlogon.exe
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\73e584e423276daf85659dd420032b73.exe
Network activity:
Connects to:
- 'pa######chainelo.ddns.net':1177
UDP:
- DNS ASK pa######chainelo.ddns.net
Miscellaneous:
Creates and executes the following:
- '%HOMEPATH%\winlogon.exe' and Settings\\%USERNAME%\\winlogon.exe\"
