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Profile

Win32.HLLW.Autoruner.61237

Added to the Dr.Web virus database: 2011-10-02

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Microsoft Corp' = '"%TEMP%\alg.exe" '
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'Microsoft Corp' = '"%TEMP%\alg.exe" '
Creates the following files on removable media:
  • <Drive name for removable media>:\AutoRUn.inf
  • <Drive name for removable media>:\SYS\SYS32\Explorer.exe
  • <Drive name for removable media>:\SYS\SYS32\Desktop.ini
Malicious functions:
Executes the following:
  • <SYSTEM32>\netsh.exe firewall add allowedprogram alg.exe alg ENABLE
Modifies file system :
Creates the following files:
  • <SYSTEM32>\importantdoc.tmp
  • %TEMP%\alg.exe
  • <SYSTEM32>\LNKnell.exe
Sets the 'hidden' attribute to the following files:
  • <Drive name for removable media>:\SYS\SYS32\Explorer.exe
  • %TEMP%\alg.exe
Network activity:
Connects to:
  • '2-####.no-ip.biz':6666
UDP:
  • DNS ASK 2-####.no-ip.biz
  • '<Private IP address>':1033
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Indicator' WindowName: ''