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Win32.HLLW.Autoruner.49190

Added to the Dr.Web virus database: 2013-10-29

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'deumoab' = '%HOMEPATH%\deumoab.exe /C'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'deumoab' = '%HOMEPATH%\deumoab.exe /x'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'deumoab' = '%HOMEPATH%\deumoab.exe /n'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'deumoab' = '%HOMEPATH%\deumoab.exe /g'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'deumoab' = '%HOMEPATH%\deumoab.exe /m'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'deumoab' = '%HOMEPATH%\deumoab.exe /h'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'deumoab' = '%HOMEPATH%\deumoab.exe /E'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'deumoab' = '%HOMEPATH%\deumoab.exe /u'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'deumoab' = '%HOMEPATH%\deumoab.exe /r'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'deumoab' = '%HOMEPATH%\deumoab.exe /Z'
  • [<HKLM>\SYSTEM\ControlSet001\Control\Print\Providers\2572119520] 'Name' = '%TEMP%\3.tmp'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'deumoab' = '%HOMEPATH%\deumoab.exe /J'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'deumoab' = '%HOMEPATH%\deumoab.exe /w'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'deumoab' = '%HOMEPATH%\deumoab.exe /V'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'deumoab' = '%HOMEPATH%\deumoab.exe /O'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'deumoab' = '%HOMEPATH%\deumoab.exe /D'
Creates the following files on removable media:
  • <Drive name for removable media>:\Documents.lnk
  • <Drive name for removable media>:\Passwords.lnk
  • <Drive name for removable media>:\Pictures.lnk
  • <Drive name for removable media>:\Video.lnk
  • <Drive name for removable media>:\Music.lnk
  • <Drive name for removable media>:\YWe.ico
  • <Drive name for removable media>:\autorun.inf
  • <Drive name for removable media>:\deumoab.exe
  • <Drive name for removable media>:\New Folder.lnk
  • <Drive name for removable media>:\deumoabx.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%\y.exe'
  • '%HOMEPATH%\deumoab.exe'
  • '%HOMEPATH%\wAYJ5ol3oYuffM46.exe'
  • '%HOMEPATH%\x.exe'
Executes the following:
  • '<SYSTEM32>\tasklist.exe'
Injects code into
the following system processes:
  • <SYSTEM32>\spoolsv.exe
Modifies settings of Windows Internet Explorer:
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1400' = '00000000'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] '1601' = '00000000'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3] 'currentlevel' = '00000000'
Modifies file system :
Creates the following files:
  • %WINDIR%\Temp\5.tmp
  • %HOMEPATH%\deumoab.exe
  • %TEMP%\Aqz..bat
  • %TEMP%\2.tmp
  • %HOMEPATH%\wAYJ5ol3oYuffM46.exe
  • %HOMEPATH%\x.exe
  • %HOMEPATH%\y.exe
Sets the 'hidden' attribute to the following files:
  • <Drive name for removable media>:\deumoab.exe
  • <Drive name for removable media>:\deumoabx.exe
  • <Drive name for removable media>:\YWe.ico
  • %HOMEPATH%\deumoab.exe
  • <Drive name for removable media>:\autorun.inf
Deletes the following files:
  • %HOMEPATH%\y.exe
  • %HOMEPATH%\wAYJ5ol3oYuffM46.exe
  • %WINDIR%\Temp\5.tmp
  • %TEMP%\3.tmp
  • <DRIVERS>\etc\hosts
Moves the following files:
  • from %HOMEPATH%\x.exe to %TEMP%\4.tmp
  • from %TEMP%\2.tmp to %TEMP%\3.tmp
Network activity:
Connects to:
  • 'ka####newsmax.in':80
UDP:
  • DNS ASK sa###force.com
  • DNS ASK ka####newsmax.in
  • DNS ASK te###raph.co.uk
  • DNS ASK ga###pot.com
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Indicator' WindowName: '(null)'