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Excel Add-ins Deliver JSSLoader Malware
Malware and Vulnerabilities
March 10, 2022
Secure Works
First observed in 2019, JSSLoader is used by the GOLD NIAGARA cybercrime group. An Excel add-in extends Excel functionality, typically uses the '.xll' file extension, and functions similar to a DLL.
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Microsoft Excel Add-in (XLL) files
Gold Niagara hacker group
Tactics, Techniques, and Procedures (TTPs)
Dynamic-Link Library (DLL)
Security Warning
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