Large scan activity observed for Digital Video Recorder NVMS-9000

SonicWall Capture Labs Threat Research Team observed large unusual scan activity looking for DVR NVMS-9000-series no-name type network-attached devices.

                     Fig: Hits for the IPS signature 14610 in the last 30 days

The traffic with the shellcode is given below. It uses the hardcoded username\ password to authenticate and attempts to fork a reverse shell to redirect the traffic to a remote listener on port TCP 31337.

Fix:

The vendor advisory is posted here where they recommend updating the firmware.

If you have NVMS-9000 DVR exposed to the web, check for any unusual activity and block all inbound access from the web.

SonicWALL Capture Labs Threat Research team provides protection against this threat with the following signature:

IPS: 14610 NVMS-9000 Digital Video Recorder Remote Code Execution

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The SonicWall Capture Labs Threat Research Team gathers, analyzes and vets cross-vector threat information from the SonicWall Capture Threat network, consisting of global devices and resources, including more than 1 million security sensors in nearly 200 countries and territories. The research team identifies, analyzes, and mitigates critical vulnerabilities and malware daily through in-depth research, which drives protection for all SonicWall customers. In addition to safeguarding networks globally, the research team supports the larger threat intelligence community by releasing weekly deep technical analyses of the most critical threats to small businesses, providing critical knowledge that defenders need to protect their networks.