sobota 25. února 2012


Encyclopedia entry
Updated: Apr 17, 2011  |  Published: Feb 23, 2010

  • Generic (McAfee)
  • Trojan.Downloader.Bredolab.CZ (BitDefender)

Alert Level (?)

Antimalware protection details
Microsoft recommends that you download the latest definitions to get protected.
Detection last updated:
Definition: 1.121.359.0
Released: Feb 24, 2012
Detection initially created:
Definition: 1.63.2017.0
Released: Aug 27, 2009



TrojanDownloader:Win32/Waledac.C is a trojan that downloads and executes arbitrary files.



There are no obvious symptoms that indicate the presence of this malware on an affected computer.


Technical Information (Analysis)

TrojanDownloader:Win32/Waledac.C is a trojan that downloads and executes arbitrary files.
Downloads and executes arbitrary files
When executed the trojan  connects to a specified remote IP address in order to download files.
The downloaded files are written to %windir%\temp and executed
The trojan has been seen to download variants of the following families of malware:
  • Win32/Waledac - a family of trojans that is generally used to send spam. They also has the ability to download and execute arbitrary files, harvest email addresses from the local machine, perform denial of service attacks, proxy network traffic and sniff passwords.
  • Win32/Winwebsec - a family of programs that claim to scan for malware and display fake warnings of “malicious programs and viruses”. They then inform the user that they need to pay money to register the software in order to remove these non-existent threats. Win32/Winwebsec has been distributed with several different names. The user interface varies to reflect each variant’s individual branding.
Analysis by Ray Roberts

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