It is not the first time that we have told you about attackers and hackers who are trying to exploit the difficult situation in which the Coronavirus pandemic has brought us and, obviously, it will not be the last. This time for example cybercriminals are trying to take advantage of the need for many to work from home and therefore need to get in touch with colleagues through group video calls. According to Trend Micro, in fact, Some modified Zoom installers would start circulating on the net, the platform exploded in popularity with the arrival of COVID-19, which they would be chock full of different types of malware that can endanger user safety.
Two modified versions of the Zoom installation file in particular seem to contain decidedly dangerous malware: one installs a backdoor on the PC victim of the attack, which allows attackers to perform malicious routines remotely, the other compromises the victims’ computers making them part of a botnet, a network of computers infected without the owners’ knowledge and used by hackers who control them for many different purposes.
The attackers, according to Trend Micro, are probably carrying out some tests, a kind of research and development in the world of cyber security, to try to hide malicious code within applications considered safe, probably in order to develop attacks capable of circumventing the security checks and infiltrate high-value systems, such as business PCs.
One of the first distinctive signs that promises to have to do with a modified version of the original installer is the slowness with which the app installation routine starts, due to the fact that the executable actually extracts the dangerous files before the actual installation of the videoconferencing program. Another alarm bell is given by size of the file itself: the original Zoom installer file weighs approximately 11650 KB while the variants containing malicious code are all larger. To protect yourself properly, therefore, you just have to remember to always download programs and apps from official sites or from secure software stores such as the Google Play Store and the Apple App Store.
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