What Is Trojan Vundo?

This section provides a quick description of trojan and adware Vundo (also known as VirtuMonde and VirtuMundo).

Vundo is a malicious program for Windows system. Here are some short descriptions of Vundo I found on the Internet:

1. From www.spynomore.com/articles/vundo-trojan-specifics-and-removal.php:

Vundo (also known as VirtuMonde and VirtuMundo) is a malicious
software application that combines both adware and trojan 
characteristics.

Vundo is wide spread today and is probably one of the hardest programs
to get rid of. Once installed, Vundo downloads and displays pop-up
advertisements that often promote questionable computer-enhancement 
programs or fake anti-virus or anti-spyware utilities. Lately, Vundo
has been advertising several rogue programs called WinFixer2005, 
WinAntiVirus Pro 2006, WinAntiSpyware and RazeSpyware.

2. From vil.nai.com/vil/content/v_127690.htm:

This is a trojan detection. Unlike viruses, trojans do not 
self-replicate. They are spread manually, often under the premise that
they are beneficial or wanted. The most common installation methods 
involve system or security exploitation, and unsuspecting users 
manually executing unknown programs. Distribution channels include 
email, malicious or hacked web pages, Internet Relay Chat (IRC), 
peer-to-peer networks, etc.

3. From en.wikipedia.org/wiki/Vundo:

The Vundo trojan is a trojan horse that may cause popups advertising
rogue antispyware programs. It infects victims' computers by 
exploiting a vulnerability in Sun Java 1.4 and earlier versions. 
Many of the popups advertise a program called Sysprotect.

But I don't think any of the above descriptions is accurate. Not long ago, I was asked by a friend of mine to look at his Vundo infected computer. I want to share some notes with you that may help you understand Trojan Vundo better.

Last update: 2006.

Table of Contents

 About This Windows Security Book

 Windows 8: System Security Review

 Windows 8: System Security Protection

 Windows 8 System Recovery

 Windows 8 Defender for Real-Time Protection

 Windows 7: System Security Review

 Windows 7: System Security Protection

 Windows 7 System Recovery

 Windows 7 Forefront Client Security

 Norton Power Eraser - Anti-Virus Scan Tool

 McAfee Virus and Malware Protection Tools

 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

What Is Trojan Vundo?

 Partial Removal of Trojan Vundo

 Detecting Trojan Vundo with McAfee VirusScan

 Instructions on Full Removal of Trojan Vundo

 Removing xxxxxxxx.dll Files Generated by Vundo

 What Is Vundo Related vtsts.dll?

 Finding and Removing vtsts.dll Manually

 Removing Trojan Vundo with FixVundo.exe from Symantec

 Removing Trojan Vundo with VundoFix.exe from Atribune.org

 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

 References

 PDF Printing Version