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Win32.HLLW.Autoruner2.38042

Added to the Dr.Web virus database: 2018-04-30

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'qafen' = '%HOMEPATH%\qafen.exe /K'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'qafen' = '%HOMEPATH%\qafen.exe /G'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'qafen' = '%HOMEPATH%\qafen.exe /Y'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'qafen' = '%HOMEPATH%\qafen.exe /S'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'qafen' = '%HOMEPATH%\qafen.exe /O'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'qafen' = '%HOMEPATH%\qafen.exe /U'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'qafen' = '%HOMEPATH%\qafen.exe /N'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'qafen' = '%HOMEPATH%\qafen.exe /C'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'qafen' = '%HOMEPATH%\qafen.exe /Q'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'qafen' = '%HOMEPATH%\qafen.exe /B'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'qafen' = '%HOMEPATH%\qafen.exe /a'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'qafen' = '%HOMEPATH%\qafen.exe /X'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'qafen' = '%HOMEPATH%\qafen.exe /r'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'qafen' = '%HOMEPATH%\qafen.exe /W'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'qafen' = '%HOMEPATH%\qafen.exe /J'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'qafen' = '%HOMEPATH%\qafen.exe /P'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'qafen' = '%HOMEPATH%\qafen.exe /V'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'qafen' = '%HOMEPATH%\qafen.exe /D'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'qafen' = '%HOMEPATH%\qafen.exe /Z'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'qafen' = '%HOMEPATH%\qafen.exe /t'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'qafen' = '%HOMEPATH%\qafen.exe /L'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'qafen' = '%HOMEPATH%\qafen.exe /I'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'qafen' = '%HOMEPATH%\qafen.exe /e'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'qafen' = '%HOMEPATH%\qafen.exe /h'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'qafen' = '%HOMEPATH%\qafen.exe /F'
Creates the following files on removable media:
  • <Drive name for removable media>:\autorun.inf
  • <Drive name for removable media>:\Aws.ico
  • <Drive name for removable media>:\qafen.exe
  • <Drive name for removable media>:\qafenx.exe
  • <Drive name for removable media>:\New Folder.lnk
  • <Drive name for removable media>:\Passwords.lnk
  • <Drive name for removable media>:\Documents.lnk
  • <Drive name for removable media>:\Pictures.lnk
  • <Drive name for removable media>:\Music.lnk
  • <Drive name for removable media>:\Video.lnk
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%\qafen.exe
Sets the 'hidden' attribute to the following files:
  • %HOMEPATH%\qafen.exe
  • <Drive name for removable media>:\autorun.inf
  • <Drive name for removable media>:\Aws.ico
  • <Drive name for removable media>:\qafen.exe
  • <Drive name for removable media>:\qafenx.exe
Network activity:
Connects to:
  • 'ns#.##ayer1532.com':8000
UDP:
  • DNS ASK ns#.##ayer1532.com
Miscellaneous:
Creates and executes the following:
  • '%HOMEPATH%\qafen.exe'