Threat Actor Profile
Chaotic Spider
Chaotic Spider, also known as 0mid16B, is a Southeast Asia–based cyber threat actor active since September 2021. Operating under aliases like Desorden and ALTDOS, this actor specializes in exploiting vulnerabilities, particularly via SQL injection, to exfiltrate and monetize sensitive data. Notably, the group eschews custom malware, focusing instead on infiltration and selling compromised information.
Threat Actor Profile
Chaotic Spider
Country of Origin
Chaotic Spider is linked to Southeast Asia, with reports identifying the individual behind the group as a Singaporean national residing in Thailand.
Members
The group’s exact size is unknown. Public reporting primarily identifies the leader and points to single-operator or small-team activity, based on the focused nature of their operations and limited lateral exploitation.
Leadership
The leader of Chaotic Spider operates under various aliases, including 0mid16B, Desorden, ALTDOS, and GHOSTR. Public sources do not reveal their real name but highlight their activity on English-language cybercriminal forums.
Chaotic Spider TTPs
Tactics
Chaotic Spider's primary objective is data exfiltration and sale. They act as a leak broker, compromising servers to extract and monetize data rather than deploying ransomware or maintaining extended intrusion campaigns.
Techniques
The group frequently employs SQL injection techniques to exploit vulnerabilities in web-facing servers. Their approach avoids custom tools, ensuring they remain less detectable by leveraging server-side vulnerabilities.
Procedures
Chaotic Spider's activities include targeting outdated or unprotected web servers, executing SQL injection attacks, exfiltrating sensitive data such as PII, and selling or disclosing the stolen information on cybercriminal platforms.
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Notable Cyberattacks
The group is most recognized for data breaches and leaks, linking stolen information to their known aliases. Publicly, individual incidents have not been attributed explicitly by victim name, but multiple cases of data exposure align with their methods and tools.
Law Enforcement & Arrests
Law enforcement apprehended the individual behind 0mid16B in February 2025. Reports suggest cooperation with authorities following the arrest, potentially leading to broader intelligence on their operations and other actors.
How to Defend Against Chaotic Spider
Web Server Vulnerability Monitoring: Regular scanning for SQL injection vulnerabilities and outdated frameworks.
WAF Configuration: Deploy Web Application Firewalls to detect and block malicious SQL query patterns.
Data Exfiltration Monitoring: Monitor server traffic for abnormal data transfers or unusual outbound connections.
Routine Software Maintenance: Keep systems, frameworks, and plugins updated, removing deprecated modules.
Database Partitioning: Limit web app database access to essential permissions to minimize compromise impact.
Huntress solutions help protect organizations by monitoring endpoints, detecting persistent footholds, and mitigating Chaotic Spider threats with managed detection and response.
References
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