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  Home / Viruses / Virus Encyclopedia

Trojan-Downloader.Win32.QQHelper.aoc

Other versions: .ay

Detection added Feb 28 2008
Update released Feb 28 2008 21:35 GMT
Description added Jan 27 2009

Technical details

This Trojan downloads other programs via the Internet and launches them for execution on the victim machine without the user’s knowledge or consent. It is a Windows PE EXE file. It is 20480 bytes in size. It is not packed in any way. It is written in C++.

Payload

Once launched, the Trojan downloads a file from the following URL:

http://www.yahoo*****.com/image/logo.jpg?queryid=70427

This file is saved to the Internet Explorer cache. The file is then launched for execution and deleted.

At the time of writing, the link was not active.

Removal instructions

If your computer does not have an up-to-date antivirus, or does not have an antivirus solution at all, follow the instructions below to delete the malicious program:

  1. Use Task Manager to terminate the Trojan process.
  2. Delete the original Trojan file (the location will depend on how the program originally penetrated the victim machine).
  3. Delete all files from %Temporary Internet Files%.
  4. Update your antivirus databases and perform a full scan of the computer (download a trial version of Kaspersky Anti-Virus).
 

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