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Vundo
The Vundo Trojan (commonly known as Vundo, Virtumonde or Virtumondo, and sometimes referred to as MS Juan) is either a Trojan horse or a computer worm that is known to cause popups and advertising for rogue antispyware programs, and sporadically other misbehavior including performance degradation and denial of service with some websites including Google and Facebook. It also is used to deliver other malware to its host computers. Later versions include rootkits and ransomware. Infection A Vundo infection is typically caused either by opening an e-mail attachment carrying the trojan, or through a variety of browser exploits, including vulnerabilities in popular browser plug-ins, such as Java. Many of the popups advertise fraudulent programs such as AntiSpywareMaster, WinFixer, and AntiVirus 2009. Virtumonde.dll consists of two main components, Browser Helper Objects and Class ID. Each of these components is in the Windows Registry under HKEY LOCAL MACHINE, and the file names ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
WinFixer
WinFixer was a family of scareware rogue security programs developed by Winsoftware which claimed to repair computer system problems on Microsoft Windows computers if a user purchased the full version of the software. The software was mainly installed without the user's consent. McAfee claimed that "the primary function of the free version appears to be to alarm the user into paying for registration, at least partially based on false or erroneous detections." The program prompted the user to purchase a paid copy of the program. The WinFixer web page (see the image) said it "is a useful utility to scan and fix any system, registry and hard drive errors. It ensures system stability and performance, frees wasted hard-drive space and recovers damaged Word, Excel, music and video files." However, these claims were never verified by any reputable source. In fact, most sources considered this program to actually reduce system stability and performance. The sites went defunct in December ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Winlogon
In computing, Winlogon (Windows Logon) is the component of Microsoft Windows operating systems that is responsible for handling the secure attention sequence, loading the user profile on logon, and optionally locking the computer when a screensaver is running (requiring another authentication step). The actual obtainment and verification of user credentials is left to other components. Winlogon is a common target for several threats that could modify its function and memory usage. Increased memory usage for this process might indicate that it has been "hijacked". In Windows Vista and later operating systems, Winlogon's roles and responsibilities have changed significantly. Overview Winlogon handles interface functions that are independent of authentication policy. It creates the desktops for the window station, implements time-out operations, and in versions of Windows prior to Windows Vista, provides a set of support functions for the GINA and takes responsibility for confi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |