SMS worm impersonates Covid-19 vaccine free registration. Android SMS worm tries to spread via text messages as fake-free registration for Covid-19 vaccine – targeting in India. It can spread itself via SMS to victim contacts with links to download this malware.The malware has several names like Covid-19 vaccine, Covid-19 vaccine registration, Vaccine Register, My-Vaci among others. Recently, The Indian Computer Emergency Response Team (CERT-In) issued a fresh advisory to warn citizens about fake CoWin vaccine registration apps that are spreading through SMS (Smishing). CERT-In mentioned that fake messages are in circulation through SMS that falsely claims to offer an app to let users register for COVID-19 vaccine in India. While the exact wordings of the SMS may differ from time to time, the SMS suggest users to download an app or APK files on their Android phones by clicking on the link that is there on the SMS and install the app.