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:
- Apple Patches Bugs Tied to Previously Identified Zero-Days
November 6, 2020
Apple has patched three previously identified zero-day vulnerabilities in its iPhone, iPod and iPad devices potentially related to a spate of related flaws recently discovered by the Google Project Zero team that also affect Google Chrome and Windows. Apple this week released iOS 14.2 and iPadOS 14.2, which patch a total of 24 vulnerabilities—including the three ...
- Operation North Star: Behind The Scenes
November 5, 2020
It is rare to be provided an inside view on how major cyber espionage campaigns are conducted within the digital realm. The only transparency afforded is a limited view of victims, a malware sample, and perhaps the IP addresses of historical command and control (C2) infrastructure. The Operation North Star campaign we detailed earlier this year ...
- Italian beverage vendor Campari knocked offline after ransomware attack
November 5, 2020
Campari Group, the famed Italian beverage vendor behind brands like Campari, Cinzano, and Appleton, has been hit by a ransomware attack and has taken down a large part of its IT network. The attack took place last Sunday, on November 1, and has been linked to the RagnarLocker ransomware gang, according to a copy of the ...
- Brazil’s court system under massive RansomExx ransomware attack
November 5, 2020
Brazil’s Superior Court of Justice was hit by a ransomware attack on Tuesday during judgment sessions that were taking place over video conference. “The Superior Court of Justice (STJ) announces that the court’s information technology network suffered a hacker attack on Tuesday (3), during the afternoon, when the six group classes’ judgment sessions took place,” STJ ...
- Cisco Zero-Day in AnyConnect Secure Mobility Client Remains Unpatched
November 5, 2020
Cisco has disclosed a zero-day vulnerability – for which there is not yet a patch – in the Windows, macOS and Linux versions of its AnyConnect Secure Mobility Client Software. While Cisco said it is not aware of any exploits in the wild for the vulnerability, it said Proof-of-Concept (PoC) exploit code has been released, opening ...
- Attacks on industrial enterprises using RMS and TeamViewer: new data
November 5, 2020
In summer 2019, Kaspersky ICS CERT identified a new wave of phishing emails containing various malicious attachments. The emails target companies and organizations from different sectors of the economy that are associated with industrial production in one way or another. We reported these attacks in 2018 in an article entitled “Attacks on industrial enterprises using RMS ...