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Threat Group Cards: A Threat Actor Encyclopedia

Tool: Merdoor

Names	Merdoor
Category	Malware
Type	Backdoor, Keylogger
Description	(Symantec) Merdoor is a fully-featured backdoor that appears to have been in existence since 2018. The backdoor contains the following functionality: • Installing itself as a service • Keylogging • A variety of methods to communicate with its command-and-control (C&C) server (HTTP, HTTPS, DNS, UDP, TCP) • Ability to listen on a local port for commands
Information	<https://symantec-enterprise-blogs.security.com/blogs/threat-intelligence/lancefly-merdoor-zxshell-custom-backdoor>
Malpedia	<https://malpedia.caad.fkie.fraunhofer.de/details/win.merdoor>

Last change to this tool card: 13 October 2023

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All groups using tool Merdoor

Changed	Name	Country	Observed
APT groups
	Lancefly	[Unknown]	2018

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

Digital Service Security Center
Electronic Transactions Development Agency

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