SVC:MBAMSwissArmy Rootkit is a detection for a harmful program that impersonates a genuine anti-malware product in order to bypass antivirus detection. Usually, Trojan with this characteristic will append Windows system files to run the malware every time Windows starts. It is created as a system service that is configured to run automatically on each boot-up process of Windows. The detection occurs if antivirus software detects that there are suspicious changes on the file including huge increase in size, altered header, and other misbehavior that are common to Trojans and viruses.
In an instance, that you are sure that computer is free from any virus threats, then the detection of SVC:MBAMSwissArmy Rootkit could be a false positive if Malwarebytes Anti-Malware is installed. There are reports that some versions of Avast antivirus fails to classify MBAM files as harmless. If that is the case, you must need to update your antivirus program to the most recent release. Database, pattern files, and the program itself require vital update from time to time. It is necessary to detect most recent malware threats, which are regularly updated to evade antivirus detection.