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Win32.HLLW.Autoruner2.19173

Added to the Dr.Web virus database: 2015-02-04

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'krbuix' = '%HOMEPATH%\krbuix.exe /g'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'krbuix' = '%HOMEPATH%\krbuix.exe /s'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'krbuix' = '%HOMEPATH%\krbuix.exe /d'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'krbuix' = '%HOMEPATH%\krbuix.exe /m'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'krbuix' = '%HOMEPATH%\krbuix.exe /u'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'krbuix' = '%HOMEPATH%\krbuix.exe /b'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'krbuix' = '%HOMEPATH%\krbuix.exe /i'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'krbuix' = '%HOMEPATH%\krbuix.exe /n'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'krbuix' = '%HOMEPATH%\krbuix.exe /l'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'krbuix' = '%HOMEPATH%\krbuix.exe /o'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'krbuix' = '%HOMEPATH%\krbuix.exe /w'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'krbuix' = '%HOMEPATH%\krbuix.exe /h'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'krbuix' = '%HOMEPATH%\krbuix.exe /c'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'krbuix' = '%HOMEPATH%\krbuix.exe /x'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'krbuix' = '%HOMEPATH%\krbuix.exe /r'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'krbuix' = '%HOMEPATH%\krbuix.exe /k'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'krbuix' = '%HOMEPATH%\krbuix.exe /t'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'krbuix' = '%HOMEPATH%\krbuix.exe /y'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'krbuix' = '%HOMEPATH%\krbuix.exe /p'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'krbuix' = '%HOMEPATH%\krbuix.exe /v'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'krbuix' = '%HOMEPATH%\krbuix.exe /a'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'krbuix' = '%HOMEPATH%\krbuix.exe /j'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'krbuix' = '%HOMEPATH%\krbuix.exe /q'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'krbuix' = '%HOMEPATH%\krbuix.exe /e'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'krbuix' = '%HOMEPATH%\krbuix.exe /z'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'krbuix' = '%HOMEPATH%\krbuix.exe /f'
Creates the following files on removable media:
  • <Drive name for removable media>:\Passwords.exe
  • <Drive name for removable media>:\RCX3.tmp
  • <Drive name for removable media>:\RCX2.tmp
  • <Drive name for removable media>:\RCX6.tmp
  • <Drive name for removable media>:\RCX5.tmp
  • <Drive name for removable media>:\RCX4.tmp
  • <Drive name for removable media>:\Secret.exe
  • <Drive name for removable media>:\krbuix.exe
  • <Drive name for removable media>:\autorun.inf
  • <Drive name for removable media>:\Porn.exe
  • <Drive name for removable media>:\RCX1.tmp
  • <Drive name for removable media>:\Sexy.exe
Malicious functions:
To complicate detection of its presence in the operating system,
forces the system hide from view:
  • hidden files
Creates and executes the following:
  • '%HOMEPATH%\krbuix.exe'
Executes the following:
  • '<SYSTEM32>\wbem\wmiadap.exe' /R /T
Modifies file system :
Creates the following files:
  • %HOMEPATH%\krbuix.exe
Sets the 'hidden' attribute to the following files:
  • <Drive name for removable media>:\krbuix.exe
  • <Drive name for removable media>:\autorun.inf
  • %HOMEPATH%\krbuix.exe
Deletes the following files:
  • <SYSTEM32>\wbem\Performance\WmiApRpl.ini
  • <SYSTEM32>\PerfStringBackup.TMP
  • <Drive name for removable media>:\Passwords.exe
  • <Drive name for removable media>:\Sexy.exe
  • <Drive name for removable media>:\Porn.exe
Network activity:
Connects to:
  • 'ns#.##siczipz.com':8003
UDP:
  • DNS ASK ns#.##siczipz.com
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Indicator' WindowName: ''