March 28, 2024by Cybersixgill IQ

Suspicious NuGet Package SqzrFramework480: Unveiling the Threat Actor and Potential Impact

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The discovery of a suspicious package named SqzrFramework480 in the NuGet package manager has raised concerns among cybersecurity researchers. This write-up aims to delve into the details of this package, including the threat actor group behind it, the intended targets, and the potential impact of the threat.


SqzrFramework480 is a .NET dynamic link library (DLL) that was uploaded to the NuGet open source repository on January 24, 2024. It has already garnered over 3,000 downloads, indicating its popularity among developers. The package appears to be associated with Bozhon Precision Industry Technology Co., Ltd., a Chinese manufacturer specializing in industrial and digital equipment manufacturing.

Suspicious Behavior:

Upon closer examination, security researchers from ReversingLabs identified several suspicious behaviors within SqzrFramework480. The package contains a DLL file named "SqzrFramework480.dll" that possesses features to capture screenshots, ping a remote IP address every 30 seconds, and transmit the screenshots over a socket connected to the IP address.

Potential Threat Actor:

While the exact threat actor behind SqzrFramework480 remains unknown, the package's association with Bozhon Precision Industry Technology Co., Ltd. raises suspicions. The use of the company's logo for the package's icon and the uploader's NuGet user account name "zhaoyushun1999" suggest a potential connection to the Chinese firm. However, no concrete evidence has been found to confirm this association.

Intended Targets:

The package appears to target developers working with technology produced by Bozhon Precision Industry Technology Co., Ltd. This suggests that the threat actor group aims to compromise the development pipelines of Bozhon's customers and potentially gain unauthorized access to their industrial systems. The specific targets could include systems equipped with cameras, machine vision, and robotic arms.

Potential Impact:

If SqzrFramework480 is indeed a malicious package, the impact could be significant. By capturing screenshots and exfiltrating data to a concealed IP address, the threat actor could gain access to sensitive information, potentially compromising the security and integrity of industrial systems. This could lead to industrial espionage, intellectual property theft, or even sabotage of critical infrastructure.

Uncertainty and Speculation:

Despite the suspicious behavior exhibited by SqzrFramework480, it is important to note that no definitive evidence has been found to classify it as malicious. The security research team at ReversingLabs has not received confirmation from Bozhon Precision Industry Technology Co., Ltd. regarding the package's legitimacy. Therefore, the analysis of the package's features and potential impact remains speculative.

Supply Chain Security Concerns:

The discovery of SqzrFramework480 highlights the growing threat of malicious packages within open source repositories like NuGet. Such packages are designed to deceive developers and infiltrate their development pipelines, posing significant risks to both open source and proprietary software ecosystems. This underscores the importance of exercising caution and scrutiny when incorporating third-party code and continuously assessing internally developed code for potential supply chain vulnerabilities.


The suspicious NuGet package SqzrFramework480 has raised concerns among cybersecurity researchers due to its association with Bozhon Precision Industry Technology Co., Ltd. and its potentially malicious behavior. While the threat actor group behind this package remains unknown, the intended targets appear to be developers working with Bozhon's technology. The impact of this threat could be severe, potentially leading to industrial espionage and compromise of critical infrastructure. As the threat landscape evolves, it crucial for development organizations to exercise caution, conduct thorough code audits, and employ automated scanning tools to mitigate the risks associated with malicious packages in the software supply chain.

This article was created using Cybersixgill IQ, our generative AI capability that supports teams with instant report writing, simplifies complex threat data and provides 24/7 assistance, transforming cybersecurity for every industry and every individual, at every level.

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