Win32:Small-HUF trojan, TrojanDownloader:VBS/Psyme or similar malware is distributed through malspam campaign, illegal activation tools, fake software updaters, downloaders, and installers. Once they gain access to computer, they can damage your computer by opening your system's backdoor, draining CPU & GPU and memory. So, yes, this malware is dangerous and can cause system damage. In such case, you can run System scan with some powerful antivirus software for malware or viruses. For more details, visit the post through link.