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Published Jul 10, 2006 | Updated Sep 15, 2017

Trojan:Win32/Nsag.A

Detected by Microsoft Defender Antivirus

Aliases: No associated aliases

Summary

Win32/Nsag.A is a data-stealing Trojan. The Trojan is created when certain code is injected into wininet.dll, which is a Windows system file. When a user tries to send data to a Web site, code in Win32/Nsag.A may cause code in another malicious DLL on the computer to capture the user data and send it to an attacker.
It is not advisable to try to remove Trojan:Win32/Nsag.B manually. Instead, use up-to-date antivirus software to remove this Trojan and other malicious software. To remove this malicious software using antivirus software, follow these steps:
  1. Disconnect from the Internet.
  2. Run up-to-date antivirus software.
  3. Take steps to prevent re-infection.

Disconnect from the Internet  

To help ensure that your computer is not actively infecting other computers, disconnect it from the Internet before proceeding by unplugging your network cable or disabling your wireless connection. You can reconnect to the Internet after running antivirus software.

Run up-to-date antivirus software  

Run up-to-date antivirus software to remove this malicious software from your computer.

Take steps to prevent re-infection  

Do not reconnect your computer to the Internet until the computer is protected from re-infection. See the "How to Prevent Infection" section for more information.
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