Rapid7 tracked a set of Linux samples that blend into the software and device conventions of the telecom environments they target. The set spans a newly observed BPFDoor variant, a BPF Rekoobe build seen against South Korean targets, a dropper, and six builds of a Linux implant Rapid7 researchers track as AVERAT, deployed against Taiwanese appliances. Additionally, researchers provide source code details of the Rapid7 BPFDoor controller introduced in our April 2026 blog, Stealthy BPFDoor Variants are a Needle That Looks Like Hay.
The chain uses two binaries. A dropper writes a shell script to the appliance’s storage mount and executes it. The script stages both payloads into /sbin under the names ntpdate and udevds, launches them, and deletes each file ten seconds later while the processes continue running. One of those payloads is the dropper itself, re-executing as a resident watchdog, leaving both processes running without an on-disk image.
Read more…
Source: Rapid7 News
Sign up for the Cyber Security Review Newsletter
The latest cyber security news and insights delivered right to your inbox
Related:
- CVE-2026-0826: How an Old Bug Can Feed AI-Powered Impersonation
June 1, 2026
Rapid7 Senior Principal Security Researcher Stephen Fewer discovered CVE-2026-0826, a critical unauthenticated stack-based buffer overflow vulnerability affecting multiple HP Poly VoIP devices. If you’ve been around vulnerability research long enough, the bug class here is going to feel very familiar. And interestingly enough, that’s exactly why it deserves attention. These older exploitation primitives never really went ...
- Containers on fire: from container escapes to supply chain attacks
June 1, 2026
Modern infrastructures universally rely on containerization to deploy applications, scale services, and build cloud platforms. The use of Docker, Kubernetes, and similar technologies has become the corporate standard for efficient automation. However, as containers grow in popularity, so does the interest of malicious actors — a trend Kaspersky actively track in our research into advanced ...
- Physical attacks on major crypto holders is on the rise as ‘Whales’ are targeted for kidnapping News
May 30, 2026
Cryptocurrency executives and whales alike are increasingly being targeted by a mix of criminal elements worldwide, even as security continues to be beefed up to protect the not-so-anonymous owners of cryptocurrency. The transparency introduced to the crypto world is putting some coin-collectors at risk of physical harm, and even kidnapping. But many are also being outed by ...
- Dutch cops wrest 17M devices from mystery botnet’s clutches
May 29, 2026
Dutch police say they dismantled a large botnet this week comprising at least 17 million infected devices. After being tipped off by a researcher at the Netherlands’ National Cyber Security Centre (NCSC-NL), police began an investigation, which resulted in the discovery of 200 servers underpinning the botnet’s infrastructure located in the country. Cybercrime specialists at The Hague ...
- No fix yet for critical RCE bug in open-source Git service Gogs – exploit module is out
May 29, 2026
There’s a huge hole and no one is patching it thus far. A critical, remote code execution (RCE) bug in Gogs, a popular open-source self-hosted Git service, can be exploited by any authenticated user – no special privileges required – on a default installation to fully compromise vulnerable servers, steal credentials and multi-factor authentication secrets, ...
- Microsoft under fire for threatening security researcher with criminal investigation
May 29, 2026
After a security researcher published a series of unpatched bugs in Microsoft products, along with code to exploit them, the company is now threatening to take legal action and call the cops on them. Microsoft’s veiled threat reignites a long-running argument over what responsibility, if any, security researchers have to disclose vulnerabilities affecting large and ...