file extension MC9

explorer.exe is computer system process named trojan.w32.ZAPCHAST.

explorer.exe process is reported as a Trojan, also known as a Trojan Horse. Trojan is a part of software, called malware (Malicious software). Trojan appears to be a friendly, relative secure application, for example a screensaver, but the main goal of Trojan application is performing hidden background tasks, especially installing a virus or backdoor application into operating system of victim. It can result, for example, into enabling remote access to computer, stealing data like bank account access, passwords stored in computer etc. Trojan can be received by email as an attachment (screensaver, multimedia postcard) or can be downloaded from internet (keygen, software for free, etc.).

explorer.exe process is reported to be a virus. Virus is computer application, which can infect computer, replicate, modify (morph) and distribute itself to another computer (by internet, CD, DVD, Blueray, USB Flash disks, etc.) – it all can be happened without approval or knowledge of user. When virus is executed, it may cause damage to data stored in computer, it can change operating system settings, change performance of computer (it can eat free memory), it can modify networks settings and slowdown network connections. Viruses are mainly distributed over internet, as attachment in e-mails, downloaded from not trusted web sites, you can receive a virus from somebody in your contact list on your favorite instant messenger (ICQ, AOL, Yahoo messenger) as a file.