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Win32.HLLW.Autoruner.53634

Aggiunto al database dei virus Dr.Web: 2011-07-08

La descrizione è stata aggiunta:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Critical Core' = '%APPDATA%\winlogon.exe'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'Critical Core' = '%APPDATA%\winlogon.exe'
Substitutes the following executable system files:
  • <SYSTEM32>\uxtheme.dll with <SYSTEM32>\uxtheme.dll.tmp
  • <SYSTEM32>\uxtheme.dll with <SYSTEM32>\uxtheme.dll
Creates the following files on removable media:
  • <Drive name for removable media>:\autorun.inf
  • <Drive name for removable media>:\DFGDFJJJJDFJDFJGFDJTURTURUTJJF\DFG-2352-26235-2322322-624621221-2622255\explorer.exe
  • <Drive name for removable media>:\DFGDFJJJJDFJDFJGFDJTURTURUTJJF\DFG-2352-26235-2322322-624621221-2622255\Desktop.ini
Malicious functions:
Creates and executes the following:
  • %WINDIR%\UTP.exe -Silent
Modifies file system :
Creates the following files:
  • %APPDATA%\Microsoft\CryptnetUrlCache\MetaData\79841F8EF00FBA86D33CC5A47696F165
  • %APPDATA%\Microsoft\CryptnetUrlCache\Content\303572DF538EDD8B1D606185F1D559B8
  • %APPDATA%\Microsoft\CryptnetUrlCache\MetaData\303572DF538EDD8B1D606185F1D559B8
  • <SYSTEM32>\uxtheme.dll.tmp
  • <SYSTEM32>\uxtheme.dll.backup
  • %APPDATA%\Microsoft\CryptnetUrlCache\Content\79841F8EF00FBA86D33CC5A47696F165
  • %WINDIR%\UTP.exe
  • %APPDATA%\winlogon.exe
  • %TEMP%\pDSon.exe
  • %APPDATA%\Microsoft\CryptnetUrlCache\Content\3C83474D61E624A4F9844DF935AFE217
  • %APPDATA%\Microsoft\CryptnetUrlCache\MetaData\3C83474D61E624A4F9844DF935AFE217
  • %WINDIR%\explorer_backup_wti.exe
Sets the 'hidden' attribute to the following files:
  • <Drive name for removable media>:\DFGDFJJJJDFJDFJGFDJTURTURUTJJF\DFG-2352-26235-2322322-624621221-2622255\explorer.exe
  • %APPDATA%\winlogon.exe
Deletes the following files:
  • C:\_@1.tmp
Moves the following system files:
  • from <SYSTEM32>\uxtheme.dll to C:\_@1.tmp
Network activity:
Connects to:
  • 'crl.verisign.com':80
  • '20#.#6.232.182':80
  • 'to#####yxx.sdeirc.net':3674
TCP:
HTTP GET requests:
  • crl.verisign.com/tss-ca.crl
  • crl.verisign.com/ThawteTimestampingCA.crl
  • 20#.#6.232.182/pki/crl/products/WindowsPCA.crl
UDP:
  • DNS ASK crl.verisign.com
  • DNS ASK crl.microsoft.com
  • DNS ASK to#####yxx.sdeirc.net
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Shell_TrayWnd' WindowName: ''
  • ClassName: 'Indicator' WindowName: ''