There are no guarantees or shortcuts
when it comes to malware removal, especially when dealing with backdoor Trojans
that can hook into the Windows 32-bit kernel, and patch several APIs to hide new registry keys and files they install. Security vendors that claim to be able to remove rootkits and backdoor Trojans cannot guarantee
that all traces of it will be removed as they may not find all the remnants.Rogue security programs
which use social engineering
and scams to trick a user into spending money to buy a bogus application that claims to remove malware can be problematic as they can also download rootkits and backdoor bots. This means infections will vary and some will cause more harm to your system than others as backdoor Trojans
not only compromise your system
, they have the ability to download even more malicious files. Since infections and severity of damage will vary
, it may take several efforts with different, the same or more powerful tools to do the job. Even then, with some types of malware infections, the task can be arduous.
Many experts in the security community believe that once infected with this type of malware, the best course of action is to wipe the drive clean, reformat
and reinstall the OS. Please read:
Backdoors and What They Mean to You
Whenever a system has been compromised by a backdoor payload, it is impossible to know if or how much the backdoor has been used to affect your system...There are only a few ways to return a compromised system to a confident security configuration. These include:
• Reimaging the system
• Restoring the entire system using a full system backup from before the backdoor infection
• Reformatting and reinstalling the system
This is what Jesper M. Johansson at Microsoft TechNet has to say: Help: I Got Hacked. Now What Do I Do?
The only way to clean a compromised system is to flatten and rebuild. That’s right. If you have a system that has been completely compromised, the only thing you can do is to flatten the system (reformat the system disk) and rebuild it from scratch (reinstall Windows and your applications).