Microsoft warns that cybercriminals are using Cobalt Strike to infect entire networks beyond the infection point. Attackers are using ads for fake Microsoft Teams updates to deploy backdoors. Microsoft is warning its customers about the so-called FakeUpdates campaigns in a non-public security advisory. The campaign is targeting various types of companies, with recent targets in the K-12 education sector, where organizations are currently dependent on using apps like Teams for videoconferencing due to COVID-19 restrictions.
Source: https://threatpost.com/microsoft-teams-fakeupdates-malware/161071/