If your pc is infected with Trojan.Win32.BHO.aheb, we recommend you to remove this malicious file as quickly as possible. To remove the malware, you need to track it down and remove all its traces from your pc. This is something you can do effectively using a reliable and advanced antivirus application.
If you currently are not using an antivirus tool, or your current antivirus tool proves incapable of removing aheb.exe, you should download and install a new antivirus tool that is effective against this malware. Next, download the latest virus updates and run a virus scan on your entire computer.
Note: This malware, like many others, may prevent your antivirus tool from downloading the latest updates. If this happens in your case too, restart Windows in the Safe Mode with Networking. This you can do by shutting down your computer and then powering it on. As Windows reloads tap the F8 key until the Advanced Boot Options screen appears.