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Win32.HLLW.Autoruner2.36454

Added to the Dr.Web virus database: 2018-04-18

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pvnan' = '%HOMEPATH%\pvnan.exe /j'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pvnan' = '%HOMEPATH%\pvnan.exe /R'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pvnan' = '%HOMEPATH%\pvnan.exe /F'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pvnan' = '%HOMEPATH%\pvnan.exe /l'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pvnan' = '%HOMEPATH%\pvnan.exe /d'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pvnan' = '%HOMEPATH%\pvnan.exe /t'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pvnan' = '%HOMEPATH%\pvnan.exe /c'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pvnan' = '%HOMEPATH%\pvnan.exe /O'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pvnan' = '%HOMEPATH%\pvnan.exe /u'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pvnan' = '%HOMEPATH%\pvnan.exe /M'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pvnan' = '%HOMEPATH%\pvnan.exe /s'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pvnan' = '%HOMEPATH%\pvnan.exe /e'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pvnan' = '%HOMEPATH%\pvnan.exe /x'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pvnan' = '%HOMEPATH%\pvnan.exe /a'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pvnan' = '%HOMEPATH%\pvnan.exe /Z'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pvnan' = '%HOMEPATH%\pvnan.exe /k'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pvnan' = '%HOMEPATH%\pvnan.exe /Q'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pvnan' = '%HOMEPATH%\pvnan.exe /h'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pvnan' = '%HOMEPATH%\pvnan.exe /p'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pvnan' = '%HOMEPATH%\pvnan.exe /W'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pvnan' = '%HOMEPATH%\pvnan.exe /G'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pvnan' = '%HOMEPATH%\pvnan.exe /v'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pvnan' = '%HOMEPATH%\pvnan.exe /n'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pvnan' = '%HOMEPATH%\pvnan.exe /i'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'pvnan' = '%HOMEPATH%\pvnan.exe /B'
Creates the following files on removable media:
  • <Drive name for removable media>:\autorun.inf
  • <Drive name for removable media>:\pvnan.exe
  • <Drive name for removable media>:\Secret.exe
  • <Drive name for removable media>:\Sexy.exe
  • <Drive name for removable media>:\RCX1.tmp
  • <Drive name for removable media>:\Porn.exe
  • <Drive name for removable media>:\RCX2.tmp
  • <Drive name for removable media>:\RCX3.tmp
  • <Drive name for removable media>:\Passwords.exe
  • <Drive name for removable media>:\RCX4.tmp
  • <Drive name for removable media>:\RCX5.tmp
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%\pvnan.exe
Sets the 'hidden' attribute to the following files:
  • %HOMEPATH%\pvnan.exe
  • <Drive name for removable media>:\autorun.inf
Deletes the following files:
  • <Drive name for removable media>:\Sexy.exe
  • <Drive name for removable media>:\Porn.exe
  • <Drive name for removable media>:\Passwords.exe
Substitutes the following files:
  • <Drive name for removable media>:\Sexy.exe
  • <Drive name for removable media>:\Porn.exe
  • <Drive name for removable media>:\Passwords.exe
Network activity:
Connects to:
  • 'ns#.##ayer1352.com':8000
UDP:
  • DNS ASK ns#.##ayer1352.com
Miscellaneous:
Creates and executes the following:
  • '%HOMEPATH%\pvnan.exe'