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Threat Group Cards: A Threat Actor Encyclopedia

Tool: EYService

Names	EYService
Category	Malware
Type	Backdoor
Description	(Epic Turla) The main functionality orchestrating the different subcomponents is contained within Data.bin, later renamed to ‘svchost.exe’. The orchestrator takes 17 different three digit codes to divert functionality within a giant switch statement. Some of the codes have not been fully implemented up to the latest samples I’ve found so far, which further suggests a continued developmental effort.
Information	<https://www.epicturla.com/blog/the-lost-nazar> <https://blog.malwarelab.pl/posts/nazar_eyservice/> <https://research.checkpoint.com/2020/nazar-spirits-of-the-past/>
Malpedia	<https://malpedia.caad.fkie.fraunhofer.de/details/win.eyservice>

Last change to this tool card: 24 April 2021

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All groups using tool EYService

Changed	Name	Country	Observed
APT groups
	Nazar		2008

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

Digital Service Security Center
Electronic Transactions Development Agency

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