Rombertik is a complex piece of spyware designed to “indiscriminately” collect everything a user does online in order to obtain user’s login credentials and other confidential information. As soon as any analysis tool is detected, the spyware attempts to delete the device’s Master Boot Record (MBR) and home directories, making the machine constantly restart. In cases where the malware is under the microscope of security experts or any rival malware author, the malware will self-destruct itself, taking a victim’s hard drive along with it.
Source: https://thehackernews.com/2015/05/malware-destroy-hard-drive.html