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Win32.HLLW.Autoruner2.26108

Added to the Dr.Web virus database: 2016-10-19

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] '' = '%APPDATA%\Microsoft\wintask.exe'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] '' = '%APPDATA%\Microsoft\taskhost.exe'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] '' = '%HOMEPATH%\Start Menu\Programstaskhost.exe'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] '' = '%HOMEPATH%\Start Menu\Programswintask.exe'
Creates or modifies the following files:
  • %HOMEPATH%\Start Menu\Programs\Startup\wintask.exe
  • %HOMEPATH%\Start Menu\Programs\Startup\taskhost.exe
Creates the following files on removable media:
  • <Drive name for removable media>:\USBDriver.exe
  • <Drive name for removable media>:\autorun.inf
Malicious functions:
Executes the following:
  • '%APPDATA%\Microsoft\wintask.exe'
  • '%APPDATA%\Microsoft\taskhost.exe'
  • '%HOMEPATH%\Start Menu\Programstaskhost.exe'
  • '%HOMEPATH%\Start Menu\Programswintask.exe'
Modifies file system:
Creates the following files:
  • %HOMEPATH%\Local Settings\<INETFILES>\Content.IE5\U98D4X8H\gate[1].php
  • %HOMEPATH%\Local Settings\<INETFILES>\Content.IE5\KHMHGZ4F\gate[1].php
  • %HOMEPATH%\Local Settings\<INETFILES>\Content.IE5\KHMHGZ4F\gate[2].php
  • <LS_APPDATA>\taskhost\taskhost.exe_Url_iji2fttt51ivkyon5eobhx02e34fonxv\1.0.0.0\da66zgq9.newcfg
  • %APPDATA%\Microsoft\wintask.exe
  • <LS_APPDATA>\taskhost\Programstaskhost.exe_Url_stpx5rimfwhynys1oofovquxm5vqfj3c\1.0.0.0\udiigbdk.newcfg
  • %HOMEPATH%\Start Menu\Programstaskhost.exe
  • %APPDATA%\Microsoft\taskhost.exe
  • %HOMEPATH%\Start Menu\Programswintask.exe
Sets the 'hidden' attribute to the following files:
  • %APPDATA%\Microsoft\wintask.exe
  • %HOMEPATH%\Start Menu\Programs\Startup\taskhost.exe
  • %HOMEPATH%\Start Menu\Programs\Startup\wintask.exe
  • <Drive name for removable media>:\autorun.inf
  • <Drive name for removable media>:\USBDriver.exe
  • %APPDATA%\Microsoft\taskhost.exe
Deletes the following files:
  • <Drive name for removable media>:\autorun.inf
Moves the following files:
  • from <LS_APPDATA>\taskhost\taskhost.exe_Url_iji2fttt51ivkyon5eobhx02e34fonxv\1.0.0.0\da66zgq9.newcfg to <LS_APPDATA>\taskhost\taskhost.exe_Url_iji2fttt51ivkyon5eobhx02e34fonxv\1.0.0.0\user.config
  • from <LS_APPDATA>\taskhost\Programstaskhost.exe_Url_stpx5rimfwhynys1oofovquxm5vqfj3c\1.0.0.0\udiigbdk.newcfg to <LS_APPDATA>\taskhost\Programstaskhost.exe_Url_stpx5rimfwhynys1oofovquxm5vqfj3c\1.0.0.0\user.config
Network activity:
Connects to:
  • 'localhost':1043
  • 'ze##ttp.ml':80
  • 'localhost':1039
TCP:
HTTP GET requests:
  • http://ze##ttp.ml/docs/robots/gate.php
UDP:
  • DNS ASK ze##ttp.ml
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Shell_TrayWnd' WindowName: ''
  • ClassName: 'MS_WebcheckMonitor' WindowName: ''
  • ClassName: 'MS_AutodialMonitor' WindowName: ''
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