The Artemis virus is a malware infection that has a number of detrimental effects on Windows computers. Most notably, the virus ruins the Web browsing experience by inserting ads throughout Web pages you visit, redirecting search engine queries and displaying pop-up advertisements at almost every turn, which could severely interrupt your business. Although most anti-virus software should detect and remove this infection, it's sometimes possible for the Trojan to slip through the cracks, necessitating manual removal of the virus
Manually Remove Files
Manually deleting files associated with Artemis will cripple the virus, enabling you to then eradicate it with anti-virus software. First, restart your computer and press "F8" repeatedly to access the Windows boot loader, and then select the "Safe Mode" option from the menu. This opens Windows in a bare-essentials mode that prevents extraneous processes, including Artemis, from running. Click the Windows orb, then "Computer," and navigate to C:\Windows\Assembly\tmp\ and delete all files with an EXE or DLL file extension. Also delete the folder "C:\Windows\Assembly\tmp\U" from the directory. Once those files are deleted, navigate to C:\Users\<Username>\AppData, where "Username" is your Windows username, and delete any file with an EXE file extension. Finally, navigate to C:\Users\<Username>\AppData\Local\Temp and delete any EXE files that have random numbers as the filename.
Run Anti-Virus
Once you have manually removed the infected files, update and run your anti-virus software while still in Safe Mode. You can usually launch your anti-virus program from the Start menu. Once the program is loaded, run its update utility to be sure the virus definitions file is up-to-date. After that, set the anti-virus software to perform a full system scan. The software should catch any remaining Artemis files that are on your system