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:
- SonicWall confirms all of its cloud backup customers were affected by data breach
October 10, 2025
All companies using SonicWall’s MySonicWall cloud backup feature have had their firewall configuration files exposed in a recent cyberattack, the company has admitted. After initially claiming “fewer than 5%” of its customer base was affected, the company has revealed the true scale of the incident. In mid-September 2025, SonicWall warned its firewall customers to reset their ...
- Identifying and Mitigating Potential Velociraptor Abuse
October 9, 2025
Open-source technologies and communities are a big part of the Rapid7 ethos, and that’s not by chance – it’s by design. Rapid7 believe that their Metasploit, AttackerKB, and Velociraptor initiatives help create a strong threat intelligence foundation as well as a secure digital future for all. Unfortunately, the same open-source tools that help security teams ...
- RondoDox: From Targeting Pwn2Own Vulnerabilities to Shotgunning Exploits
October 9, 2025
The Trend Zero Day Initiative (ZDI) Threat Hunting and Trend Research teams have identified a significant RondoDox botnet campaign that targets a wide range of internet-exposed infrastructure. This campaign consists of over 50 exploits, including unpatched router flaws across over 30 vendors, targeting vulnerabilities found in routers, digital video recorders (DVRs), network video recorders (NVRs), CCTV ...
- Inside Russian Market: Uncovering the Botnet Empire
October 9, 2025
The online cybercrime marketplace, Russian Market, has evolved from selling Remote Desktop Protocol (RDP) access to becoming one of the most active underground hubs for information-stealing malware logs, where stolen user credentials are traded daily. Each compromised login represents a potential gateway into corporate systems, enabling threat actors to launch credential-based attacks that put businesses, governments, ...
- Weaponized AI Assistants & Credential Thieves
October 9, 2025
Just weeks after the s1ngularity attack weaponized AI assistants, the NPM ecosystem was rocked by a far more dangerous threat: a self-propagating worm named Shai-Hulud. In a sobering demonstration of this rapid escalation in attack techniques, the worm has compromised over 187 packages, including several developer-facing tools published by cybersecurity firm CrowdStrike. These two distinct events ...
- Hack on Japan’s biggest brewer renews concerns over cyberattack readiness
October 8, 2025
Japan’s favorite beer brand is reeling from a cyberattack that paralyzed its production last week. Its factories have started brewing again, and some truckloads of beer are leaving its warehouses, but the attack has spotlighted the poor cybersecurity readiness among top-tier companies in the world’s fifth-largest economy. On Tuesday, Qilin, a ransomware group with a track ...