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Threat Group Cards: A Threat Actor Encyclopedia

Tool: MASEPIE

Names	MASEPIE
Category	Malware
Type	Downloader
Description	(BleepingComputer) The links redirect victims to malicious web resources that employ JavaScript to drop a Windows shortcut file (LNK) that launches PowerShell commands to trigger an infection chain for a new Python malware downloader called 'MASEPIE.' MASEPIE establishes persistence on the infected device by modifying the Windows Registry and adding a deceptively named LNK file ('SystemUpdate.lnk') to the Windows Startup folder.
Information	<https://www.bleepingcomputer.com/news/security/russian-military-hackers-target-ukraine-with-new-masepie-malware/>
Malpedia	<https://malpedia.caad.fkie.fraunhofer.de/details/py.masepie>

Last change to this tool card: 17 January 2024

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All groups using tool MASEPIE

Changed	Name	Country	Observed
APT groups
	Sofacy, APT 28, Fancy Bear, Sednit		2004-Apr 2025

1 group listed (1 APT, 0 other, 0 unknown)

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