Where does this computer Trojan come from?

Question

Every time my daughter uses Yahooligans (Internet for kids) we wind up with a Trojan in our system referred to as "QHosts.DF". How can I figure out where it comes from and how do I prevent it from reoccurring? (Aside from not letting her use her computer!)

Answer 1

The easiest and quickest way to get rid of the Trojan is using eTrust Pest Patrol program. It's quick, clean and simple. For all their strengths, Norton, McAfee and others just can't get rid of that pesty little program. It writes several files to your computer:
system %system%\hwiper.exe
hclean32.exe
howiper.exe
hwiper.exe
%system%\hclean32.exe
and several registry file entries.

Answer 2

Type Malware
Type Description Malware ("malicious software") consists of software with clearly malicious, hostile, or harmful functionality or behavior and that is used to compromise and endanger individual PCs as well as entire networks.
Category Trojan
Category Description Trojan is a general term for malicious software that is installed under false or deceptive pretenses or is installed without the user's full knowledge and consent. Most Trojans exhibit some form of malicious, hostile, or harmful functionality or behavior.
Level High
Level Description High risk threats are typically installed without user interaction through security exploits, and can severely compromise system security. Such threats may open illicit network connections, use polymorphic tactics to self-mutate, disable security software, modify system files, and install additional malware. These threats may also collect and transmit personally identifiable information (PII) without your consent and severely degrade the performance and stability of your computer.

Answer 3

I strongly believe that your Anti-malware app. is giving you a "false-positive" here.

If a major website such as Yahoo had infected webpages (especially on a kids' site) or was linking to them, it would be major news on every computer security forum on the web within hours. That's just not the case, and I visit such forums daily.

I would strongly urge you to get a "second opinion" on the trojan infection by doing a online scan with one of the following:

Kaspersky Anti-Virus
http://usa.kaspersky.com/services/free-virus-scanner.php

BitDefender Anti-Virus
http://www.bitdefender.com/site/home/

Both KAV and BD have some of the highest malware detection rates in the industry and their on-line scan service is free.

If you do indeed determine that your current Anti-virus is falsely indicating QHosts.DF as threat, you should notify your anti-virus apps' vendor so remedial action can be taken.

Good luck.

Answer 4

Here is the link that will tell your the threat assessment of "QHost.DF", trojan. In my opinion it comes direct from the "Yahooligans", webpage. (All trojans can steal your personal data from your pc). Please reboot your pc after you remove any trojan, spyware or malware.

Open the link below: (You should not have to copy and paste).


http://www3.ca.com/be/securityadvisor/virusinfo/virus.aspx?ID=57764

Clinical Psychiatirst, France

Answer 5

The Trojan is from web sites.

Answer 6

it is most likely the internet connection