BAT.Highjaq

This parasitic trojan uses really sophisticated algorithm of infecting the target computer: there are two parts of this trojan's code, and each of them acts in a different manner. Despite that, this pest is quite harmless and doesn't usually result in many unwanted consequences, which would be hard to repair. This virus can also be executed as a device driver; this technique may often cause more problems , but still no great destruction would be made in this case.