Library
My library

+ Add to library

Contact us
24/7 Tech support | Rules regarding submitting

Send a message

Your tickets

Profile

Win32.HLLW.Autoruner.57766

Added to the Dr.Web virus database: 2011-09-03

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'niucuan' = '%HOMEPATH%\niucuan.exe /b'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'niucuan' = '%HOMEPATH%\niucuan.exe /f'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'niucuan' = '%HOMEPATH%\niucuan.exe /N'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'niucuan' = '%HOMEPATH%\niucuan.exe /x'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'niucuan' = '%HOMEPATH%\niucuan.exe /K'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'niucuan' = '%HOMEPATH%\niucuan.exe /c'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'niucuan' = '%HOMEPATH%\niucuan.exe /i'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'niucuan' = '%HOMEPATH%\niucuan.exe /s'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'niucuan' = '%HOMEPATH%\niucuan.exe /j'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'niucuan' = '%HOMEPATH%\niucuan.exe /O'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'niucuan' = '%HOMEPATH%\niucuan.exe /V'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'niucuan' = '%HOMEPATH%\niucuan.exe /T'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'niucuan' = '%HOMEPATH%\niucuan.exe /Z'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'niucuan' = '%HOMEPATH%\niucuan.exe /E'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'niucuan' = '%HOMEPATH%\niucuan.exe /h'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'niucuan' = '%HOMEPATH%\niucuan.exe /a'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'niucuan' = '%HOMEPATH%\niucuan.exe /y'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'niucuan' = '%HOMEPATH%\niucuan.exe /G'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'niucuan' = '%HOMEPATH%\niucuan.exe /P'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'niucuan' = '%HOMEPATH%\niucuan.exe /u'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'niucuan' = '%HOMEPATH%\niucuan.exe /m'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'niucuan' = '%HOMEPATH%\niucuan.exe /r'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'niucuan' = '%HOMEPATH%\niucuan.exe /q'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'niucuan' = '%HOMEPATH%\niucuan.exe /D'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'niucuan' = '%HOMEPATH%\niucuan.exe /W'
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>:\DnWJ.ico
  • <Drive name for removable media>:\autorun.inf
  • <Drive name for removable media>:\niucuan.exe
  • <Drive name for removable media>:\New Folder.lnk
  • <Drive name for removable media>:\niucuanx.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%\niucuan.exe 
Modifies file system :
Creates the following files:
  • %HOMEPATH%\niucuan.exe
Sets the 'hidden' attribute to the following files:
  • <Drive name for removable media>:\niucuan.exe
  • <Drive name for removable media>:\niucuanx.exe
  • <Drive name for removable media>:\DnWJ.ico
  • %HOMEPATH%\niucuan.exe
  • <Drive name for removable media>:\autorun.inf
Network activity:
Connects to:
  • 'ns#.##ayer1532.com':8003
UDP:
  • DNS ASK ns#.##ayer1532.com
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Indicator' WindowName: ''