Adware virtumonde seems to have become a trojan which cyber criminals take as an example of successful malware. Using highly aggressive techniques, it infected millions of computers worldwide. To remove virtumonde virus, it is not enough to have antivirus software with latest updates. Special removal tools are needed to fight this dreading malware.
Virtumonde Trojan demonstrates that contemporary antivirus protection leaves much to be desired. This malware seems to have been specially created to make popular security programs look imperfect. Some are able to detect the infection, but cannot remove nor quarantine them.
At a closer look Virtumonde is nearly a perfect virus. It self-protects, monitors the system memory of the infected computer, randomly names its malicious files, and integrates with Windows critical processes.
This Trojan is responsible for adware pop-ups, redirecting browsers to websites with ads and malicious scripts. Virtumonde is able to change the desktop background (wallpaper), screensaver, and disable some tabs of Desktop Properties. Besides, some variations of the Trojan are capable of disabling Task Manager and Registry Editor thus making everything to prevent its successful removal.
Adware virtumonde loads a .DLL file into memory to ensure it’s always up and running. A special module watches the environment inspecting the processes, and puts the Trojan back whenever some program (like antivirus) tries to close it.
Self-restoring mechanism allows virtumondo to restore its associated files if some of them are removed by security programs. That is, upon next computer reboot the Trojan is back and fully functioning.
The main files that are integrated with Windows Explorer and Winlogon processes make virtumonde resistant and hard to remove. Popular Windows security suites from biggest software manufacturers often cannot break the tight linking of the malware to critical components.
This explains why specific steps and adware virtumonde removal tools are needed to clean out infected computers.
First, it is necessary to unload malware services from system memory.
Second, registry entries and keys related to Trojan virtumonde should be deleted at once.
Third, malicious files should be permanently erased from the system.
All this has to be done in one Windows session, without restarting, or the Trojan will be able to restore itself to previous state.
Several software companies and volunteer programmers decided to develop special tools to help users remove Virtumonde. Among others, Symantec provides a free fix tool for certain variations of the virus.
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