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:
- Hacking group returns, switches attacks from ransomware to trojan malware
November 16, 2018
A prolific hacking group has returned with a new campaign which looks to deliver a new remote access trojan (RAT) to victims in order to create a backdoor into PCs to steal credentials and banking information. The campaign is suspected to be the work of TA505, a well-resourced hacking group which has been active since at least 2014. ...
- 0-Days Found in iPhone X, Samsung Galaxy S9, Xiaomi Mi6 Phones
November 15, 2018
At Pwn2Own 2018 mobile hacking competition held in Tokyo on November 13-14, white hat hackers once again demonstrated that even the fully patched smartphones running the latest version of software from popular smartphone manufacturers can be hacked. Three major flagship smartphones—iPhone X, Samsung Galaxy S9, and Xiaomi Mi6—were among the devices that successfully got hacked at ...
- Siemens Patches Firewall Flaw That Put Operations at Risk
November 14, 2018
The industrial company on Tuesday released mitigations for eight vulnerabilities overall. Siemens AG on Tuesday issued a slew of fixes addressing eight vulnerabilities spanning its industrial product lines. The most serious of the patched flaws include a cross-site scripting vulnerability in Siemens’ SCALANCE firewall product. The flaw could allow an attacker to gain unauthorized access to ...
- State-Sponsored Actors Focus Attacks on Asia
November 14, 2018
Southeast Asia is the most actively attacked region, accordingly to Cyber Security firm, Group-IB. Their annual Hi-Tech Crime Trends Report 2018 advises, “In just one year, 21 state-sponsored groups were detected in this area, which is more than in the United States and Europe.” Although, not only state-sponsored groups are focusing their attention on this ...
- 7 New Meltdown and Spectre-type CPU Flaws Affect Intel, AMD, ARM CPUs
November 14, 2018
Disclosed earlier this year, potentially dangerous Meltdown and Spectre vulnerabilities that affected a large family of modern processors proven that speculative execution attacks can be exploited in a trivial way to access highly sensitive information. Since then, several more variants of speculative execution attacks have been discovered, including Spectre-NG, SpectreRSB, Spectre 1.1, Spectre1.2, TLBleed, Lazy FP, NetSpectre and Foreshadow, patches for which were released ...
- October 2018’s Most Wanted Malware: For The First Time, Remote Access Trojan Reaches Top 10 Threats
November 13, 2018
For the first time, Check Point threat intelligence researchers found that a remote access Trojan (RAT) has reached the Global Threat Index’s Top 10. Dubbed “FlawedAmmyy”, this type of attack allows attackers to remotely control the victim’s machine– gaining full access to the machine’s camera and microphone, collecting screen grabs, stealing credentials and sensitive files, ...