Your router may be affected by a new malware targeting it, more technical details here

If you have access to your router and know how to manage it, first of all restart it. This alone will clear the temporary data used by the malware - but it's due to be re-infected if you do not upgrade your router's firmware to the last version available.

In the case you do not manage the router, ask your administrator or service provider if your router is safe from the VPNFilter attack.

A list of the known affected devices:

LINKSYS DEVICES:

E1200
E2500
WRVS4400N

MIKROTIK ROUTEROS VERSIONS FOR CLOUD CORE ROUTERS:

1016
1036
1072

NETGEAR DEVICES:

DGN2200
R6400
R7000
R8000
WNR1000
WNR2000

QNAP DEVICES:

TS251
TS439 Pro

Other QNAP NAS devices running QTS software

TP-LINK DEVICES:

R600VPN