Methods and systems for preventing malicious activity in a computer system

A computer-implemented method for preventing an activity of a malware application in a computer system, the method being executable by a processor of the computer system, the method comprising:

• receiving, by the processor, at least one artefact that is indicative of an execution of a sandbox environment in the computer system, the sandbox environment including a virtual machine;
• causing, by the processor, installation of the at least one artefact of the sandbox environment in the computer system for simulating the sandbox environment in the computer system without actually executing the sandbox environment;
• receiving, by the processor, an indication of at least one interaction of a given application with the at least one artefact;
• analyzing, by the processor, an activity of the given application to detect at least one of a first type event and a second type event triggered thereby after executing the at least one interaction,
• the first type event being the given application aborting execution of any activity after the at least one interaction with the at least one artefact;
• and
• the second type event being the given application executing the activity thereof in a manner different from a predetermined manner of executing the activity associated with the given application;
• in response to the analyzing rendering a positive result by detecting the at least one of the first type event and the second type event:
• identifying the given application as being the malware application;
• and
• using data indicative of a digital footprint of the given application in the computer system for updating the at least one artefact for further preventing the activity of the malware application.