Glupteba | Breaking Cybersecurity News | The Hacker News

The  Glupteba  botnet has been found to incorporate a previously undocumented Unified Extensible Firmware Interface ( UEFI ) bootkit feature, adding another layer of sophistication and stealth to the malware. "This bootkit can intervene and control the [operating system] boot process, enabling Glupteba to hide itself and create a stealthy persistence that can be extremely difficult to detect and remove," Palo Alto Networks Unit 42 researchers Lior Rochberger and Dan Yashnik  said  in a Monday analysis. Glupteba is a fully-featured information stealer and backdoor capable of facilitating illicit cryptocurrency mining and deploying proxy components on infected hosts. It's also known to leverage the Bitcoin blockchain as a backup command-and-control (C2) system, making it  resilient to takedown efforts . Some of the other functions allow it to deliver additional payloads, siphon credentials, and credit card data, perform ad fraud, and even exploit routers to ga...

The operators of the Glupteba botnet resurfaced in June 2022 as part of a renewed and "upscaled" campaign, months after Google disrupted the malicious activity. The ongoing attack is suggestive of the malware's resilience in the face of takedowns, cybersecurity company Nozomi Networks said in a write-up. "In addition, there was a tenfold increase in TOR hidden services being used as C2 servers since the 2021 campaign," it  noted . The malware, which is distributed through fraudulent ads or software cracks, is also equipped to retrieve additional payloads that enable it to steal credentials, mine cryptocurrencies, and expand its reach by exploiting vulnerabilities in IoT devices from  MikroTik  and  Netgear . It's also an instance of an unusual malware that leverages blockchain as a mechanism for command-and-control (C2)  since at least 2019 , rendering its infrastructure resistant to takedown efforts as in the case of a traditional server. Specifically...

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Google on Tuesday said it took steps to disrupt the operations of a sophisticated "multi-component" botnet called Glupteba that approximately infected more than one million Windows computers across the globe and stored its command-and-control server addresses on Bitcoin's blockchain as a resilience mechanism. As part of the efforts, Google's Threat Analysis Group (TAG) said it partnered with the CyberCrime Investigation Group over the past year to terminate around 63 million Google Docs that were observed to have distributed the malware, alongside 1,183 Google Accounts, 908 Cloud Projects, and 870 Google Ads accounts that were associated with its distribution. Google TAG further said it worked with internet infrastructure providers and hosting providers, such as Cloudflare, to dismantle the malware by taking down servers and placing interstitial warning pages in front of the malicious domains. In tandem, the internet giant also announced a lawsuit against two Russ...