Infinity Technology

More details have emerged about a botnet called AVRecon, which has been observed making use of compromised small office/home office (SOHO) routers as part of a multi-year campaign active since at least May 2021.

AVRecon was first disclosed by Lumen Black Lotus Labs earlier this month as malware capable of executing additional commands and stealing victim's bandwidth for what appears to be an illegal proxy service made available for other actors. It has also surpassed QakBot in terms of scale, having infiltrated over 41,000 nodes located across 20 countries worldwide.

"The malware has been used to create residential proxy services to shroud malicious activity such as password spraying, web-traffic proxying, and ad fraud," the researchers said in the report.

This has been corroborated by new findings from KrebsOnSecurity and Spur.us, which last week revealed that "AVrecon is the malware engine behind a 12-year-old service called SocksEscort, which rents hacked residential and small business devices to cybercriminals looking to hide their true location online."

The basis for the connection stems from direct correlations between SocksEscort and AVRecon's command-and-control (C2) servers. SocksEscort is also said to share overlaps with a Moldovan company named Server Management LLC that offers a mobile VPN solution on the Apple Store called HideIPVPN.

Black Lotus Labs told The Hacker News that the new infrastructure it identified in connection with the malware exhibited the same characteristics as the old AVrecon C2s.

AVRecon Botnet
The new SocksEscort nodes, which shifted during the second week of July (Source: Lumen Black Lotus Labs)
"We assess that the threat actors were reacting to our publication and null-routing of infrastructure, and attempting to maintain control over the botnet," the company said. "This suggests the actors wish to further monetize the botnet by maintaining some access and continue enrolling users in the SocksEscort 'proxy as a service.'"

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