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:
- PoetRAT Resurfaces in Attacks in Azerbaijan Amid Escalating Conflict
October 8, 2020
A new iteration of the PoetRAT spyware, sporting improvements to operational security, code efficiency and obfuscation, is making the rounds in Azerbaijan, targeting the public sector and other key organizations as the country’s conflict with Armenia over disputed territory intensifies. Threat intelligence researchers have observed multiple new strikes using the malware that show a “change in ...
- Transforming IoT Monitoring Data into Threat Defense
October 8, 2020
In our midyear roundup report, we shared that in the first half of 2020, there was a 70% increase in inbound attacks on devices and routers compared with the second half of 2019. This data includes attacks on Internet of Things (IoT) systems, which remain alarming and prevalent. With the aim of protecting customers effectively by ...
- BAHAMUT Spies-for-Hire Linked to Extensive Nation-State Activity
October 7, 2020
A cyberespionage group known as BAHAMUT has been linked to a “staggering” number of ongoing attacks against government officials and private-sector VIPs in the Middle East and South Asia, while also engaging in wide-ranging disinformation campaigns. That’s according to BlackBerry researchers, who said that the highly resourced group is probably operating on a mercenary basis, offering ...
- US brokerage firms warned of widespread survey phishing attacks
October 7, 2020
The U.S. Financial Industry Regulatory Authority (FINRA) has issued a notice warning member brokerage firms of widespread phishing attacks using surveys to harvest information. FINRA is a non-profit organization and self-regulatory body authorized by the U.S. government to regulate exchange markets and brokerage firms. According to FINRA, the organization supervises over 624,000 brokers across the country and ...
- French companies Under Attack from Clever BEC Scam
October 6, 2020
The highly anonymous and often secretive nature of the internet has led to the proliferation of scams aimed at separating people and organizations from their money. Trend Micro has been following these scams over the years and have seen many of them evolve from simplistic schemes to more sophisticated campaigns. One of the most dangerous ...
- Inside the Bulletproof Hosting Business – Cybercriminal Methods and OpSec
October 6, 2020
Many cybercriminal operations have some level of organization, planning, and some form of foundation that reflects the technical acumen of the individual or group behind them. The use of underground infrastructure is inherent to the modus operandi of a cybercriminal. In our Underground Hosting series, we have differentiated how cybercrime goods are sold in marketplaces ...