In recent months, a concerning trend has emerged in the world of cybercrime. Attackers are targeting MySQL servers and Docker hosts, leveraging them as launching pads for devastating distributed denial-of-service (DDoS) attacks. In this article, we will delve into the methods used by these attackers, the specific malware employed, and the potential implications for businesses and users alike.
MySQL Server Attacks
Attacks predominantly focused on publicly-accessible MySQL servers with weak credentials or known vulnerabilities. Cybercriminals scan the internet for these exposed servers, searching for potential entry points.
Once a vulnerable server is identified, attackers infect it with the notorious ‘Ddostf’ botnet, believed to originate from China. This powerful malware becomes the weapon of choice for launching crippling DDoS attacks.
Attackers breach MySQL servers by utilizing various techniques, including the exploitation of weak credentials, SQL injection attacks, or leveraging known vulnerabilities. Their main goal is to gain control and upload a malicious Dynamic Link Library (DLL) acting as a User-Defined Function (UDF) library.
Malware Deployment on MySQL Servers
Once attackers have control over the MySQL server, they upload the malicious DLL, which serves as a gateway for executing malicious commands and deploying the Ddostf malware.
The uploaded DLL enables the execution of commands on the compromised server, allowing attackers to deploy the Ddostf malware. This malware achieves persistence, collects system information, and awaits commands from a remote command-and-control (C&C) server.
The Ddostf malware establishes persistence within the infected server, surviving reboots and maintaining control for extended periods. Additionally, it collects valuable system information, aiding potential future attacks or facilitating its sale on the dark web.
Ddostf Malware Capabilities
Analysis reveals that the primary purpose of Ddostf is to launch large-scale DDoS attacks. It possesses the necessary capabilities to flood targeted networks or websites with an overwhelming amount of traffic, rendering them inaccessible.
Considering the functionality and modus operandi of Ddostf, it is strongly suspected that the threat actor behind the malware may be operating a DDoS-for-hire service, renting out their botnet to other malicious actors for financial gain.
Docker Host Attacks
In addition to targeting MySQL servers, attackers have turned their attention to Docker hosts, leveraging the OracleIV malware. This new threat further exacerbates the risk landscape for businesses utilizing Docker technology.
Attackers identify publicly-exposed instances of the Docker Engine API, scanning for vulnerabilities to exploit. This API serves as a crucial gateway for managing Docker containers, making it an enticing target for cybercriminals.
Actively scanning for exposed Docker Engine API instances, attackers search for weaknesses that will grant them unauthorized access. This focus on Docker hosts follows the well-documented history of attackers exploiting accidental exposures for various malicious purposes.
Malicious Container Deployment on Docker Hosts
Once access is gained, the attackers deploy a malicious container that hosts Python malware onto the compromised Docker host. This malware acts as a command center for subsequent operations.
The common occurrence of inadvertently exposed Docker Engine API instances makes them an attractive target for attackers. Exploiting this access point allows them to penetrate Docker environments and execute their malicious intentions.
Notably, attackers have often targeted exposed Docker Engine APIs to deploy cryptocurrency mining operations. However, the recent shift towards leveraging Docker hosts for launching DDoS attacks highlights the evolving landscape of cyber threats.
Docker Image Used by Attackers
The malicious Docker image utilized by attackers has garnered over 3,000 pulls, signifying a significant number of potential victims or potential accomplices willingly or unknowingly assisting in their criminal activities.
This specific Docker image supports a range of DDoS attack types, enabling attackers to tailor their assaults to the specific needs or demands of their clients. This versatility enhances the appeal among cybercriminals seeking to inflict damage or disrupt specific targets.
The evolving threat landscape has seen attackers exploit MySQL servers and Docker hosts, planting malware capable of launching devastating DDoS attacks. Organizations and individuals utilizing these technologies must remain vigilant, implementing robust security measures to safeguard their systems from falling victim to these increasingly sophisticated and damaging cyber assaults.