FOREIGN CYBER ACTORS TARGET HOME AND OFFICE ROUTERS AND NETWORKED DEVICES WORLDWIDE
SUMMARY
The FBI recommends any owner of small office and home office routers power cycle (reboot) the devices. Foreign cyber actors have compromised hundreds of thousands of home and office routers and other networked devices worldwide. The actors used VPNFilter malware to target small office and home office routers. The malware is able to perform multiple functions, including possible information collection, device exploitation, and blocking network traffic.
TECHNICAL DETAILS
The size and scope of the infrastructure impacted by VPNFilter malware is significant. The malware targets routers produced by several manufacturers and network-attached storage devices by at least one manufacturer. The initial infection vector for this malware is currently unknown.
THREAT
VPNFilter is able to render small office and home office routers inoperable. The malware can potentially also collect information passing through the router. Detection and analysis of the malware’s network activity is complicated by its use of encryption and misattributable networks.
DEFENSE
The FBI recommends any owner of small office and home office routers reboot the devices to temporarily disrupt the malware and aid the potential identification of infected devices. Owners are advised to consider disabling remote management settings on devices and secure with strong passwords and encryption when enabled. Network devices should be upgraded to the latest available versions of firmware.
Authorities and researchers still don’t know for certain how compromised devices are initially infected. They suspect the attackers exploited known vulnerabilities and default passwords that end users had yet to patch or change. That uncertainty is likely driving the advice in the FBI statement that all router and NAS users reboot, rather than only users of the 14 models known to be affected by VPNFilter, which are:
- Linksys E1200
- Linksys E2500
- Linksys WRVS4400N
- Mikrotik RouterOS for Cloud Core Routers: Versions 1016, 1036, and 1072
- Netgear DGN2200
- Netgear R6400
- Netgear R7000
- Netgear R8000
- Netgear WNR1000
- Netgear WNR2000
- QNAP TS251
- QNAP TS439 Pro
- Other QNAP NAS devices running QTS software
- TP-Link R600VPN
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