EngQQ2005Formal.exe and Adware Trojan

This section provides security risk information about QQ IM client program, EngQQ2005Formal.exe, which contains some adware, but safe to use.

A few weeks ago, I downloaded the QQ IM client program QQ2005 English Standard Version, EngQQ2005Formal.exe, from http://im.qq.com/qq/mo.shtml?/download/qqe.shtml. When I installed EngQQ2005Formal.exe, I noticed an entry in the McAfee log file, OnAccessScanLog:

<date time> Deleted herong C:\temp\EngQQ2005Formal.exe 
   C:\Documents and Settings\herong\Local Settings\Temp\nsa13F.tmp
   \Setup_QQ.exe Generic.dx (Trojan)

What happened here was that, during the installation process, EngQQ2005Formal.exe created a temporary file called Setup_QQ.exe. But McAfee detected that Setup_QQ.exe contains an adware Trojan called Generic.dx. McAfee deleted Setup_QQ.exe to protect my system.

Interestingly, my installation of EngQQ2005Formal.exe finished ok and worked fine without this Setup_QQ.exe.

I also searched on the Internet for any security issues related to EngQQ2005Formal.exe and saw this Web page: http://www.browserdefender.com/file/511195/site/qq.com/. It provided a full security analysis report on EngQQ2005Formal.exe. Here is a summary of the report:

Download Analysis for EngQQ2005Formal.exe, 16,540,758 bytes

We have tested this file and found no serious problems, although extra
caution is advised.

Files created with adware risks:
%Temp%\nsl3.tmp\Setup_QQ.exe, 142,336 bytes, Adware.Agent.XUJ
%ProgramFiles%\Tencent\Adplus\scrax.dll, 56,320 bytes, Adware-TCent
%ProgramFiles%\Tencent\Adplus\SSAddr1.dll, 122,880 bytes, Adware-TCent

There were registered attempts to establish remote connection:
scdown.qq.com, Port: 1080

After reading this report, I feel more confident about using the QQ IM client, because I removed those adware related files.

Last update: 2006.

Table of Contents

 About This Windows Security Book

 Windows 8: System Security Review

 Windows 8: System Security Protection

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 Windows 7 Forefront Client Security

 Norton Power Eraser - Anti-Virus Scan Tool

McAfee Virus and Malware Protection Tools

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 Manual Scan with McAfee Security Scan Plus

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 What Is McAfee VirusScan Enterprise?

 VirusScan Enterprise 8.5.0i Services

 VirusScan Enterprise Startup Programs

 VirusScan Enterprise 8.5.0i Log Files

 OnAccessScanLog.txt Log File

EngQQ2005Formal.exe and Adware Trojan

 Running VirusScan On-Demand Scan

 Spybot - Spyware Blocker, Detection and Removal

 Keeping Firefox Secure

 Keeping IE (Internet Explorer) Secure

 Malware (Adware, Spyware, Trojan, Worm, and Virus)

 HijackThis - Browser Hijacker Diagnosis Tool

 IE Add-on Program Listing and Removal

 "Conduit Search" - Malware Detection and Removal

 "Tube Dimmer", "Scorpion Saver" or "Adpeak" Malware

 Malware Manual Removal Experience

 Vundo (VirtuMonde/VirtuMundo) - vtsts.dll Removal

 Trojan and Malware "Puper" Description and Removal

 VSToolbar (VSAdd-in.dll) - Description and Removal

 PWS (Password Stealer) Trojan Infection Removal

 MS08-001 Vulnerability on Windows Systems

 Antivirus System PRO


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