Technology1 min read

One of Google’s Android partners turned 1.3 million set-top boxes into a botnet

By · Via The Verge · Published by Everything Blog

In short

Google banned Videostrong from building, selling, or supplying software for certified Android products after finding the firm pre-loaded backdoors onto 1.3 million devices. The manufacturer monetized this access over multiple years by facilitating ad fraud, data exfiltration, secondary malware installation, and residential proxy networks. Beyond disrupting the primary backdoor, Google dismantled command-and-control domains, severing criminal access to an estimated 10 million additional compromised devices. Google has since updated its review protocols for hardware manufacturing partners to prevent similar supply-chain compromises.

Key points

  • Manufacturers can covertly weaponize initial device boot sequences to enable long-term, p…: Manufacturers can covertly weaponize initial device boot sequences to enable long-term, profitable cybercrime operations.
  • Google dismantled extensive criminal infrastructure to remediate millions of vulnerable I…: Google dismantled extensive criminal infrastructure to remediate millions of vulnerable Internet of Things endpoints.
  • Review processes for certified Android device partners have been updated to counter firmw…: Review processes for certified Android device partners have been updated to counter firmware-level supply chain threats.

Sources checked by our analysis pipeline: 1

Google says one of its Android manufacturing partners secretly built a backdoor in 1.3 million devices and turned them into a botnet. The company says it has now dismantled the backdoor and “cut ties” with the manufacturer, the Shenzhen, China-based Videostrong Technology Co., which has been banned from building or selling certified Android devices or supplying software for them.

One of Google’s Android partners turned 1.3 million set-top boxes into a botnet

Google says a manufacturer ‘intentionally’ hijacked its devices with malware.

Google says a manufacturer ‘intentionally’ hijacked its devices with malware.

The infected devices were used without owners’ knowledge for “malicious activity,” like ad fraud, data exfiltration, and routing unauthorized network traffic. Google claims the “backdoor and botnet were intentionally developed, deployed, and operated for financial gain,” saying:

Videostrong monetized the backdoor by selling access to criminal affiliates and loading those affiliates’ malware modules onto infected devices. These secondary modules were conducting ad-fraud; silently enrolling infected devices into residential proxy networks; and loading additional malware onto XCPE-compromised devices. We also took action to disrupt the command and control (C2)…

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