Malware which aims to steal Facebook login credentials and also aggressively displays pop-up adverts has been uncovered targeting Android users via the Google Play store -- and may have been downloaded by hundreds of thousands of unwitting victims.

Dubbed GhostTeam after strings in the code by the analysts at security company Trend Micro which uncovered it, the malware was first published in April 2017 and was disguised in the official Android marketplace as utility apps, performance boosters, and social media video downloaders.