Technical Information
To ensure autorun and distribution
Modifies the following registry keys
- [HKLM\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Userinit' = 'userinit.exe,%WINDIR%\system\bot1.exe,'
- [HKLM\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Userinit' = 'userinit.exe,%WINDIR%\system\bot1.exe,<Full path to file>,'
Malicious functions
Injects code into
the following system processes:
- %WINDIR%\system\bot1.exe
- %WINDIR%\explorer.exe
Modifies file system
Creates the following files
- %WINDIR%\system\bot1.exe
- %WINDIR%\system\rcx6eaa.tmp
- %TEMP%\bot6f08.tmp
- %TEMP%\bot705e.tmp
- C:\myrep.dat
Sets the 'hidden' attribute to the following files
- C:\myrep.dat
Deletes the following files
- %TEMP%\bot6f08.tmp
- %TEMP%\bot705e.tmp
Moves the following files
- from %WINDIR%\system\rcx6eaa.tmp to %WINDIR%\system\bot1.exe
Network activity
Connects to
- 'br###-lab.org':80
- 'br###-lab.org':443
- 'microsoft.com':80
TCP
HTTP GET requests
- http://www.br###-lab.org/botnet1/bots_controller.php?gu####################################################################
- http://www.microsoft.com/
Other
- 'br###-lab.org':443
UDP
- DNS ASK br###-lab.org
- DNS ASK microsoft.com
Miscellaneous
Creates and executes the following
- '%WINDIR%\system\bot1.exe'
Restarts the analyzed sample
