Recently, NSFOCUS Security Labs captured a new APT34 phishing attack. During the campaign, APT34 attackers disguised as a marketing services company called GGMS launched attacks against enterprise targets and released a variant of SideTwist Trojan to achieve long-term control of the victim host. Introduction to APT34 APT34, also known as...
Category: Blog
Mastering Defense and Understanding Offense: Approach of Detecting Abnormal Attack Behaviors
In offensive and defensive exercises, attackers will use various attack methods to maximize their objectives, including not only common attack methods but also complex attacks. Phishing email is popular among attackers as the most commonly used and low-cost attack method. Attackers typically use a variety of techniques and deception to...
From Ripples to Waves: The Swift Evolution of the “Boat” Botnet
The botnet family “Boat†was first discovered by NSFOCUS Security Labs in June 2022. Its name comes from the fact that malicious samples in its early versions propagate with the file name "boat". At the same time, since some malicious samples in later versions of this family retain symbolic information...
How to Achieve Sensitive Data Unlearning for Machine Learning Models?
As machine learning is increasingly used in data analysis in cybersecurity, there is a risk of privacy disclosure to some extent if models inadvertently capture sensitive information from training data. Since training data will exist in the model parameters for a long time, it is possible to directly output training...
KmsdBot: A Customized Botnet Family with DDoS and Mining Capabilities
I. Overview NSFOCUS Security Labs recently detected that a new botnet family KmsdBot, which combines DDoS and mining functions, has become active again. Attackers continue to replace C&C infrastructure and update Trojan versions. Compared with the traditional botnet-like family, KmsdBot adopts a brand-new architecture and is developed in the Go...
Metabase Remote Code Execution Vulnerability (CVS 2023-37470)
Overview Recently, NSFOCUS CERT detected a remote code execution vulnerability in Metabase (CVE-2023-37470). Due to a flaw in the vulnerability fix for CVS 2023 38646, attackers can achieve remote code execution through H2 connection string injection. Affected users should take protective measures as soon as possible. Reference link: https://github.com/metabase/metabase/security/advisories/GHSA-p7w3-9m58-rq83 Scope...
