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Win32.HLLW.Autoruner2.35897

Added to the Dr.Web virus database: 2018-04-13

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'moowei' = '%HOMEPATH%\moowei.exe /J'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'moowei' = '%HOMEPATH%\moowei.exe /W'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'moowei' = '%HOMEPATH%\moowei.exe /s'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'moowei' = '%HOMEPATH%\moowei.exe /r'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'moowei' = '%HOMEPATH%\moowei.exe /x'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'moowei' = '%HOMEPATH%\moowei.exe /H'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'moowei' = '%HOMEPATH%\moowei.exe /z'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'moowei' = '%HOMEPATH%\moowei.exe /u'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'moowei' = '%HOMEPATH%\moowei.exe /n'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'moowei' = '%HOMEPATH%\moowei.exe /f'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'moowei' = '%HOMEPATH%\moowei.exe /B'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'moowei' = '%HOMEPATH%\moowei.exe /M'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'moowei' = '%HOMEPATH%\moowei.exe /V'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'moowei' = '%HOMEPATH%\moowei.exe /k'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'moowei' = '%HOMEPATH%\moowei.exe /P'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'moowei' = '%HOMEPATH%\moowei.exe /g'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'moowei' = '%HOMEPATH%\moowei.exe /o'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'moowei' = '%HOMEPATH%\moowei.exe /i'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'moowei' = '%HOMEPATH%\moowei.exe /c'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'moowei' = '%HOMEPATH%\moowei.exe /Y'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'moowei' = '%HOMEPATH%\moowei.exe /L'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'moowei' = '%HOMEPATH%\moowei.exe /Q'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'moowei' = '%HOMEPATH%\moowei.exe /T'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'moowei' = '%HOMEPATH%\moowei.exe /E'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'moowei' = '%HOMEPATH%\moowei.exe /D'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'moowei' = '%HOMEPATH%\moowei.exe /A'
Creates the following files on removable media:
  • <Drive name for removable media>:\autorun.inf
  • <Drive name for removable media>:\moowei.exe
  • <Drive name for removable media>:\Secret.exe
  • <Drive name for removable media>:\Sexy.exe
  • <Drive name for removable media>:\RCX1.tmp
Malicious functions:
To complicate detection of its presence in the operating system,
forces the system hide from view:
  • hidden files
Modifies file system:
Creates the following files:
  • %HOMEPATH%\moowei.exe
Sets the 'hidden' attribute to the following files:
  • %HOMEPATH%\moowei.exe
  • <Drive name for removable media>:\autorun.inf
Deletes the following files:
  • <Drive name for removable media>:\Sexy.exe
Substitutes the following files:
  • <Drive name for removable media>:\Sexy.exe
Network activity:
Connects to:
  • 'ns#.##ayer1352.com':8000
UDP:
  • DNS ASK ns#.##ayer1352.com
Miscellaneous:
Creates and executes the following:
  • '%HOMEPATH%\moowei.exe'