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Win32.HLLW.Autoruner2.16462

Added to the Dr.Web virus database: 2014-07-27

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'recyclerr' = '%APPDATA%\recyclerr\recyclerr.exe'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Userinit' = '<SYSTEM32>\userinit.exe,%APPDATA%\recyclerr\recyclerr.exe,'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce] 'wextract_cleanup0' = 'rundll32.exe <SYSTEM32>\advpack.dll,DelNodeRunDLL32 "%TEMP%\IXP000.TMP\"'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'recyclerr' = '%APPDATA%\recyclerr\recyclerr.exe'
Creates the following files on removable media:
  • <Drive name for removable media>:\autorun.inf
  • <Drive name for removable media>:\ntldr.exe
Malicious functions:
Creates and executes the following:
  • '%TEMP%\5468805.exe'
  • '%TEMP%\5668805.exe'
  • '%TEMP%\IXP000.TMP\bukahke.exe'
  • '%TEMP%\5468805.exe' (downloaded from the Internet)
  • '%TEMP%\5668805.exe' (downloaded from the Internet)
Executes the following:
  • '<SYSTEM32>\wscript.exe' "<SYSTEM32>\net.vbs"
  • '<SYSTEM32>\cmd.exe' /c ""<SYSTEM32>\launchz.bat" "
  • '<SYSTEM32>\wscript.exe' "<SYSTEM32>\launchz.vbs"
Modifies file system :
Creates the following files:
  • <SYSTEM32>\net.vbs
  • C:\autorun.inf
  • %WINDIR%\tmpp.log
  • <SYSTEM32>\launch.bat
  • <SYSTEM32>\logg.txt
  • <SYSTEM32>\launch.vbs
  • <SYSTEM32>\launchz.vbs
  • %TEMP%\5468805.exe
  • %TEMP%\5668805.exe
  • %TEMP%\IXP000.TMP\bukahke.exe
  • <SYSTEM32>\launchz.bat
  • %APPDATA%\recyclerr\recyclerr.exe
  • <DRIVERS>\tmpp.exe
Sets the 'hidden' attribute to the following files:
  • <Drive name for removable media>:\autorun.inf
  • <Drive name for removable media>:\ntldr.exe
  • C:\autorun.inf
  • C:\ntldr.exe
Deletes the following files:
  • <SYSTEM32>\launchz.bat
  • <SYSTEM32>\launchz.vbs
Network activity:
Connects to:
  • 'co####ice.zapto.org':80
  • 'www.mo####hacker2.info':80
  • 'wp#d':80
TCP:
HTTP GET requests:
  • co####ice.zapto.org/Updatefixed.exe
  • www.mo####hacker2.info/PB_2.5/extractor.exe
  • wp#d/wpad.dat
UDP:
  • DNS ASK co####ice.zapto.org
  • DNS ASK www.mo####hacker2.info
  • DNS ASK wp#d
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Indicator' WindowName: '(null)'