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Free tool from BitDefender cleans up Downadup infection
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BitDefender UK
: 13 March, 2009 (New Product) |
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Users of computers infected by the latest version of the Downadup worm can obtain a free clean-up tool from BitDefender to restore their equipment |
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BitDefender has detected a new and more aggressive version of the Downadup virus which is spreading by using a Windows RPC Server Service vulnerability. Called Win32.Worm.Downadup.C. â€" this latest version is more resistant to disinfection. Once a system has been compromised, the worm disables Windows Update and blocks access to most anti-virus websites in order to disrupt attempts to disinfect the machine.
BitDefender is the first AV vendor to offer a free tool which disinfects all versions of Downadup and is available for all infected users. It is claimed that this domain is the first to serve a removal tool without being blocked by the e-threat.
The worm itself is not new, it made its first appearance in late November 2008, when it was labeled Conficker or Kido. The worm is also known for exploiting the vulnerability described in the Microsoft security bulletin MS08-067. After successful exploitation it used to install rogue security software onto infected machines.
"BitDefender Labs has been seeing an increase in worms, like Downadup, that have a built-in mathematical algorithm, generating strings based on the current date," said Vlad Valceanu, BitDefender's senior malware analyst. "The worms then produce a fixed number of domain names on a daily basis and check them for updates. This makes it easy for malware writers and cybercriminals to upgrade a worm or give it a new payload, since they only have to register one of the domains and then upload the files.'
To stay up-to-date on the latest e-threats, sign-up for BitDefender's RSS feeds here.
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