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Win32.HLLW.Autoruner1.61137

Added to the Dr.Web virus database: 2013-11-13

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pielai' = '%HOMEPATH%\pielai.exe /F'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pielai' = '%HOMEPATH%\pielai.exe /o'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pielai' = '%HOMEPATH%\pielai.exe /T'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pielai' = '%HOMEPATH%\pielai.exe /e'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pielai' = '%HOMEPATH%\pielai.exe /k'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pielai' = '%HOMEPATH%\pielai.exe /V'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pielai' = '%HOMEPATH%\pielai.exe /A'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pielai' = '%HOMEPATH%\pielai.exe /z'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pielai' = '%HOMEPATH%\pielai.exe /s'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pielai' = '%HOMEPATH%\pielai.exe /M'
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>:\XTc.ico
  • <Drive name for removable media>:\autorun.inf
  • <Drive name for removable media>:\pielai.exe
  • <Drive name for removable media>:\New Folder.lnk
  • <Drive name for removable media>:\pielaix.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%\pielai.exe'
Modifies file system :
Creates the following files:
  • %HOMEPATH%\pielai.exe
Sets the 'hidden' attribute to the following files:
  • <Drive name for removable media>:\pielai.exe
  • <Drive name for removable media>:\pielaix.exe
  • <Drive name for removable media>:\XTc.ico
  • %HOMEPATH%\pielai.exe
  • <Drive name for removable media>:\autorun.inf
Network activity:
Connects to:
  • 'ns#.##ayer1532.com':8000
UDP:
  • DNS ASK ns#.##ayer1532.com
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Indicator' WindowName: '(null)'