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Danger level 6
Type: Trojans
Common infection symptoms:
  • Installs itself without permissions
  • Connects to the internet without permission
  • Slow internet connection
  • Slow Computer

Trojan.Enviserv.A

Trojan.Enviserv.A is a dangerous computer parasite that can cause a lot of trouble for your system. Luckily, this program cannot spread on its own, but it means that it has a lot of various means of distribution, and it can get into your computer before you even know it. Trojan.Enviserv.A comes equipped with a variety of malicious actions, and whatever it does depends on its creator. The Trojan can connect to a remote server and receive configurations and instructions on how to process further on.

This Trojan can come to your system via a drive-by download or together with a shareware program that you download for some specific function, thinking that it might increase the performance of your computer. In reality, it might actually do so, but at the same time Trojan.Enviserv.A threatens your system and you cannot be guaranteed that this parasite does not download other types of malware (like rogue, for example) onto your computer.

During the installation process Trojan.Enviserv.A copies itself to the following directory: C:\Documents and Settings\Administrator\Local Settings\Application data\Microsoft\nvvsvc.exe. The location of the Trojan implies that even if the computer is infected via a secondary account (that is not an administrator’s account), the Trojan still manages to root into the administrative part of the system. Trojan.Enviserv.A also adds another value to a certain Registry key entry in order to make sure that the program starts every single time you boot your system.

Once Trojan.Enviserv.A is installed and running it makes sure that there is an Internet connection in your computer. Then, when it has detected the internet, the Trojan connects to a remote server, to report to the hacker who has created it, that yet another computer has been infected. As a result, Trojan.Enviserv.A receives configuration data on how to work further on, and it can easily download and execute various files making your computer vulnerable to other types of threats. Not to mention that it can store data of financial nature from your computer and then upload it to a remote server, sending it away to a third party. This way, you can be left with an infected computer and lose your sensitive information at the same time.

Since this Trojan does not have an interface, it might be hard to tell whether are infected or not. However, there are certain process files associated with it, so if you see such processes as 9A3D.exe, ctfmonzoq.exe or nvvscv.exe in your Windows Task Manager, and on top of that, your computer has been behaving weird lately, you are definitely infected. To counter the infection, you need to remove Trojan.Enviserv.A as soon as you can. It might be rather frustrating to delete it manually especially if you are not into computers, so for an easy automatic removal rely on a powerful security tool which will take care of the problem for you in no time.

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How to manually remove Trojan.Enviserv.A

Files associated with Trojan.Enviserv.A infection:

BestSpywareScanner.exe
9A3D.exe
sysl32.dll
windowsinstaller.dll
ctfmonzoq.exe
BestSpywareScanner.exe
awd.exe
ACPI.sys
9A3D.exe
nvvsvc.exe
nvvsvc.exe
ctfmonzoq.exe
sysl32.dll
windowsinstaller.dll
awd.exe
ACPI.sys

Trojan.Enviserv.A DLL's to remove:

sysl32.dll
sysl32.dll
windowsinstaller.dll
windowsinstaller.dll

Trojan.Enviserv.A processes to kill:

ctfmonzoq.exe
BestSpywareScanner.exe
9A3D.exe
awd.exe
ctfmonzoq.exe
BestSpywareScanner.exe
awd.exe
9A3D.exe
nvvsvc.exe
nvvsvc.exe
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