Microsoft has been advised by your Internet provider that your network is infected. Microsoft advises removing the infection using an antispyware program. Naked Security is seeing a large number of malicious emails in our spam traps pretending to contain advice regarding the Conficker worm. We are supplying all effected Windows Users with a free system scan in order to clean any files infected by the virus. The process takes under a minute and will prevent your files from being compromised. We appreciate your prompt cooperation.Regards, Microsoft Windows Agent #2 (Hollis)”]
Source: https://grahamcluley.com/beware-fake-microsoft-alerts-regarding-conficker-worm/