Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce] 'IcwRmind' = ''
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Userinit' = '<SYSTEM32>\userinit.exe,%WINDIR%\system\bot1.exe,'
Changes the following executable system files:
- <SYSTEM32>\sndrec32.exe
- <SYSTEM32>\taskmgr.exe
- <SYSTEM32>\mspaint.exe
- <SYSTEM32>\calc.exe
- <SYSTEM32>\notepad.exe
Infects the following executable files:
- <SYSTEM32>\sndrec32.exe
- <SYSTEM32>\taskmgr.exe
- <SYSTEM32>\mspaint.exe
- <SYSTEM32>\calc.exe
- <SYSTEM32>\notepad.exe
Malicious functions:
Creates and executes the following:
- '%WINDIR%\system\bot1.exe'
Injects code into
the following system processes:
- %WINDIR%\Explorer.EXE
Modifies file system :
Creates the following files:
- %TEMP%\RCXE.tmp
- %TEMP%\RCXF.tmp
- %TEMP%\botD.tmp
- %TEMP%\RCXB.tmp
- %TEMP%\RCXC.tmp
- %TEMP%\bot13.tmp
- %TEMP%\RCX14.tmp
- %TEMP%\RCX12.tmp
- %TEMP%\bot10.tmp
- %TEMP%\RCX11.tmp
- %TEMP%\botA.tmp
- %TEMP%\bot3.tmp
- %TEMP%\bot4.tmp
- %TEMP%\bot2.tmp
- %WINDIR%\system\bot1.exe
- %WINDIR%\system\RCX1.tmp
- %TEMP%\RCX8.tmp
- %TEMP%\RCX9.tmp
- %TEMP%\bot7.tmp
- %TEMP%\RCX5.tmp
- %TEMP%\RCX6.tmp
Deletes the following files:
- %TEMP%\botA.tmp
- %TEMP%\bot7.tmp
- %TEMP%\bot10.tmp
- %TEMP%\botD.tmp
- %TEMP%\bot2.tmp
- %WINDIR%\system\bot1.exe
- %TEMP%\bot4.tmp
- %TEMP%\bot3.tmp
Moves the following files:
- from %TEMP%\RCXE.tmp to %TEMP%\botD.tmp
- from %TEMP%\RCXC.tmp to %TEMP%\botA.tmp
- from %TEMP%\RCXF.tmp to %TEMP%\botD.tmp
- from %TEMP%\RCX12.tmp to %TEMP%\bot10.tmp
- from %TEMP%\RCX11.tmp to %TEMP%\bot10.tmp
- from %TEMP%\RCXB.tmp to %TEMP%\botA.tmp
- from %TEMP%\RCX5.tmp to %TEMP%\bot4.tmp
- from %WINDIR%\system\RCX1.tmp to %WINDIR%\system\bot1.exe
- from %TEMP%\RCX6.tmp to %TEMP%\bot4.tmp
- from %TEMP%\RCX9.tmp to %TEMP%\bot7.tmp
- from %TEMP%\RCX8.tmp to %TEMP%\bot7.tmp
Network activity:
Connects to:
- 'www.br###-lab.org':80
TCP:
HTTP GET requests:
- www.br###-lab.org/botnet1/bots_controller.php?gu####################################################################
UDP:
- DNS ASK www.br###-lab.org
