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Date discovered:11/11/2009
In the wild:Yes
Reported Infections:Low
Distribution Potential:Low
Damage Potential:Medium
Static file:Yes
File size:86.016 Bytes
MD5 checksum:3a1e12a1a5ba7d7ac33f22734df7f516
VDF version:
IVDF version:

 General Method of propagation:
   • No own spreading routine


Platforms / OS:
   • Windows 2000
   • Windows XP
   • Windows 2003
   • Windows Vista
   • Windows 7

Side effects:
   • Drops files
   • Registry modification
   • Steals information

 Files It copies itself to the following location:
   • %APPDATA%\Microsoft\Windows\shell.exe

The following file is created:

– %APPDATA%\Microsoft\stor.cfg

 Registry The following registry keys are added:

– [HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
   • ProxyServer="http="

– [HKCU\Software\Microsoft\Windows NT\CurrentVersion\Winlogon]
   • Shell="explorer.exe,%APPDATA%\Microsoft\Windows\shell.exe"

The following registry key is changed:

– [HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
   New value:
   • "ProxyEnable"=dword:00000001

 Backdoor The following port is opened:

%executed file% on TCP port 50370 in order to provide a proxy server.

 Stealing It tries to steal the following information:

– A logging routine is started after the following website is visited, which contains one of the following substrings in the URL:
   • wikipedia
   • youtube
   • facebook
   • twitter
   • amazon
   • blogger
   • flickr
   • google

 File details Runtime packer:
In order to aggravate detection and reduce size of the file it is packed with a runtime packer.

Description inserted by Andrei Ilie on Thursday, March 3, 2011
Description updated by Andrei Ilie on Friday, March 4, 2011

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