That chubby swede (sleepy) wrote,
That chubby swede
sleepy

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Scary code...

... while I worked on some code, browser windows started to pop up once in a while... closed them down... didn't think about it... got a few new ones... closed down all browsers except one, the one I was currently working in... they kept coming... this triggered my curiosity, I had to know what was running... I found the first clue in the IE's surf cache... an encrypted Javascript... used the Soya.Encode.ScriptDecoder to wrap up the first layer of encoding... ran the rest of the code through a vbscript that decoded another part of the script and finally wrapped up the encrypted (Rot -2) data... a small script that pops up an invisible window without a taskbar, makes a few tries to create instances of ActiveX controls ... the FSO (FileSystemObject)...

makes a few writes to the REGISTRY, sets the following keys...

HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\SearchURL = 'http://www.topsearcher.com/ie/'
HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main\Default_Search_URL = 'http://www.topsearcher.com/ie/'
HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main\Search Page = 'http://www.topsearcher.com/ie/'
HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main\Search Bar = 'http://www.topsearcher.com/ie/'
HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Search\SearchAssistant = 'http://www.topsearcher.com/ie/'
HKEY_OCA_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Search\SearchAssistant = 'http://www.topsearcher.com/ie/'
HKEY_USERS\.Default\Software\Microsoft\Internet Explorer\SearchUR = 'http://www.topsearcher.com/ie/'
HKEY_USERS\.Default\Software\Microsoft\Internet Explorer\Main\Search Page = 'http://www.topsearcher.com/ie/'
HKEY_USERS\.Default\Software\Microsoft\Internet Explorer\Main\Default_Search_URL = 'http://www.topsearcher.com/ie/'
HKEY_USERS\.Default\Software\Microsoft\Internet Explorer\Main\Search Bar = 'http://www.topsearcher.com/ie/'
HKEY_USERS\.Default\Software\Microsoft\Internet Explorer\Search\SearchAssistant = 'http://www.topsearcher.com/ie/'

... it creates a few files that are .reg, .hta and 'sp.dll', 'sp.icl' files, merges them with the registry... and starts popping up new windows...

Disable Javascripts by default. Turn it on explicitly on sites you trust.

Somebody really wants hits on their site...
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