Google and an assortment of partners shut down a botnet that an approved Android device manufacturer purposefully deployed across more than 1.3 million TV set-top boxes, the company said Monday. 

Videostrong Technology Co., a China-based Android original equipment and device manufacturer, implanted a backdoor into multiple devices it sold. Those backdoors established XCPE, an expansive botnet that cybercriminals used to conduct ad fraud, steal data and route malicious traffic through residential proxy networks, according to a Google Threat Intelligence Group report.

Google took legal action to shut down the domains and servers Videostrong used to control the botnet. The company also took down command-and-control domains that more than a dozen malware families ran as modules through the XCPE backdoor, claiming it disrupted access to at least 10 million additional compromised devices from various manufacturers.

Videostrong sold Android devices with pre-installed malware for years, slipping by Google’s security tests by loading the malicious code after the device’s first boot. “The XCPE operators constantly evolved its configurations to evade Google’s pre and post-launch detections,” Charley Snyder, head of disruption operations at GTIG, told CyberScoop.

Snyder declined to say when or how Google first became aware of the approved vendor running a botnet on Android-powered devices. 

“We found this malicious software built directly into many different device models and brands over multiple years, supported by dedicated infrastructure and constantly evolving configurations to evade detection and manage their affiliates,” Google researchers wrote in the report. “We believe this campaign wasn’t an isolated rogue insider or a development oversight.”

Google banned Videostrong and any future subsidiaries from building or selling certified Android devices, and said it changed its review process to detect and stop similar activities in the future. Yet, Snyder said the company isn’t sharing specifics on these changes because it doesn’t want to provide threat actors insights that might help them circumvent these additional protections.

Most of the devices comprising the XCPE botnet were Android TV set-top boxes, but researchers also observed infected Android-based telehealth devices, karaoke machines and digital signs. 

“Without users’ knowledge or consent, infected devices were offered as a distribution mechanism for a wide array of criminal actors,” researchers wrote in the report. “This led to a variety of malicious activities being conducted on and through the devices, including ad-fraud, data exfiltration, and routing malicious network traffic through the devices.”

The botnet spanned more than 170 countries, with the largest concentration of infected devices based in Malaysia, Brazil, Iraq, Mexico and Taiwan, according to TrendAI researchers. Nearly 44,000 infected devices were based in the United States between June and October.

Google also partnered with Japan’s National Police Agency, Lumen Technologies, Human Security, Plume and Synthient to study and disrupt the botnet. 

The company said the dismantling of XCPE “seriously impacted over a dozen malicious actors,” yet it warned that the underlying market for backdoors, ad fraud and residential proxy networks are resilient and operating as an interconnected supply chain.

The post Google shuts down global botnet running on certified Android devices appeared first on CyberScoop.

The cybersecurity battlefield evolves daily, with SOC analysts serving as front-line defenders. After years of training SOC teams, I’ve identified 11 core skills that separate effective defenders from the rest.

Here’s the problem: we’re training analysts to look for needles in haystacks when they don’t even know what hay looks like. Too many enter SOC positions without understanding the systems they’re trying to protect.

1. Understanding Operating Systems

You can’t defend what you don’t understand. Period. Master both Windows and Linux. Not just surface stuff, but really get how they work under the hood. Learn through the incident response lens:”If this system were hacked, how would I find the bad guys?”

2. Network Traffic Analysis

Understand TCP/IP and how traffic actually flows (the OSI model matters less than knowing what a SYN flood, DNS tunnel, or C2 beacon looks like on the wire). Know the difference between TCP and UDP, and establish baselines for what normal traffic looks like in your environment.

3. Memory Analysis

Memory forensics shows you malware that might be invisible on disk. Tools like Volatility let you examine processes, connections, and DLLs from a memory dump. This works even when attackers delete their tools or use fileless malware. It’s like catching someone with their hand in the cookie jar.

4. Log Analysis

Logs are your investigative breadcrumbs. Know which ones to collect and how to make sense of them. Remember, no single log tells the whole story. You need to connect multiple data points, like a detective piecing together clues at a crime scene.

5. Endpoint Detection and Response

Master your EDR solutions. Understand how they work, what they can do, and where they fall short. No EDR catches everything. You need to tune these tools, like adjusting the sights on a rifle for better accuracy.

6. Threat Hunting

Don’t just sit back waiting for alerts. Get out there and hunt! Look for threats that slipped past your automated systems. Combine smart hypotheses with data analysis to find attackers living off the land, using legitimate tools for evil purposes.

7. Malware Analysis

Every SOC analyst should know basic static and dynamic analysis. Look at the file without running it, then observe its behavior in a safe sandbox. Learn to spot common techniques like obfuscation and persistence. Know thy enemy, right?

8. Vulnerability Management

Understand different vulnerability types and how they’re exploited. Don’t just focus on CVSS scores. Consider actual exploitability in your environment and the potential impact. A “critical” vulnerability that can’t actually be exploited in your environment isn’t critical for you.

9. Incident Response

When stuff hits the fan, know what to do. Identify what happened, contain it, kick out the attackers, and recover your systems. Document everything. Not just for compliance, but so your team can learn and improve.

10. Automation and Scripting

Automate the boring stuff with PowerShell, Python, or Bash. Create tools that do the repetitive work for you. This frees you up to focus on the complex problems that need human brainpower.

11. Communication and Documentation

Technical skills alone won’t cut it. You need to explain complex technical stuff to different audiences. The most brilliant analysis in the world is useless if you can’t make the bosses understand why they should care.

Conclusion

Mastering these skills won’t happen overnight, but they’re the foundation of being an effective SOC analyst. What makes great analysts stand out isn’t just knowing individual skills but connecting dots across domains: seeing how network traffic ties to endpoint behavior, when log weirdness might point to memory-resident malware, and how vulnerabilities create openings for attackers

By building these core skills, you’ll be ready to protect your organization against even the nastiest threats out there..

Read more of this story at Slashdot.

Botnets powered by residential proxy networks are proliferating, enabling cybercriminals of all types to evade detection by blending in with seemingly legitimate traffic, Lumen Technology’s Black Lotus Labs said in a report Friday.

The global scale of botnets observed by Lumen is currently approaching 60 million victim IP addresses, Chris Formosa, senior lead information security engineer at Black Lotus Labs, told CyberScoop. Roughly 1 in 4 of those compromised IPs are based in the United States, and the true number of infected devices is much greater because there are networks beyond Lumen’s visibility and multiple devices are often unknowingly running a malicious proxy network on the same IP. 

Super-sized botnets are also gaining momentum, according to Lumen, with an average of 10 distinct botnets controlling their own populations of about 1 million active victims daily.

“The only reason these botnets keep getting more and more victims is because there is clearly a market. Aside from criminal activity, who wants access to millions of IPs regularly?” Formosa said. 

That demand for botnets fuels opportunities for growth, reselling, collaboration, and quick rebounds following massive disruptions.

IPIDEA, one of the largest residential proxy networks in operation when its infrastructure was disrupted by coordinated strikes in January, recovered at nearly half-strength within hours and earlier this surpassed its pre-disruption botnet size with a current botnet population of about 10 million IPs, researchers said.

“Their rebuild was eye-opening as they began to rebound from that interdiction,” Ryan English, information security engineer at Black Lotus Labs, told CyberScoop. “Even for how quickly some botnets can rebound, theirs was surprising. We’ve seen them all rebuild, but we haven’t seen anybody do it that fast.”

Meanwhile, botnets are continuously growing, as cybercriminals seek out the cover they provide, more cheap and poorly defended devices hit the market and vendors stop providing security updates for older but still usable products. 

“Your available pool for those proxy hunters grows every year, and it will continue to grow every year,” English said, adding that more than 1 billion devices are currently vulnerable and available to be unknowingly sucked up into botnets.

The challenge for defenders is lopsided, and while disruptions and seizures occur relatively often, botnet operators have formed a global supply chain with pathways that are difficult to break. 

“We have observed multiple residential proxy services collaborating to form what amounts to the largest cooperative network ever seen on the internet,” researchers wrote in the report.

Black Lotus Labs currently tracks more than 30 distinct malicious proxy botnet clusters, and most of those regularly boast more than 100,000 daily victims.

“Our understanding of the various botnets in this space, along with experience in multiple disruptions, leads us to a very important conclusion: taking down a single malicious proxy provider or their botnet in isolation is likely to result in a short-lived solution,” researchers wrote. 

“In recent years, the malicious proxy environment has essentially created the largest collective botnet currently active on the internet, capable of moving millions of IPs within hours to wherever they are needed,” they added. “Until the malicious proxy landscape is properly addressed and regulated on both the private industry and law enforcement sides, this issue will grow and, along with the DDoS botnet landscape, will most likely become a greater problem in the long term.”

The post Despite multiple takedowns, botnets continue to grow appeared first on CyberScoop.

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